HIGH-PER.ORMANCE PRODUCTS
1
www.semtech.com
Revision 1/January 23, 2001
SK19XX .amily .unctional Block Diagram
PRELIMINARY
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
SK19XX .amily
1:9 Signal Distribution
SK19XX .amily Product Selection Guide
1:9 Signal Distribution
3 GHzSynch / Asynch Operation
Logic .amily
Logic / Translation .amily
Open Collector Logic .amily
HIGH-PER.ORMANCE PRODUCTS
r
e
w
o
P
y
l
p
p
u
S
n
o
i
t
a
r
u
g
if
n
o
C
t
u
p
t
u
O
t
u
p
t
u
O
y
t
il
i
b
a
li
a
v
A
t
c
u
d
o
r
P
V
3
.
3
V
2
.
5
n
e
p
O
r
e
t
t
i
m
E
0
5
e
l
b
u
o
D
n
o
i
t
a
n
i
m
r
e
T
0
5
e
c
r
u
o
S
n
o
i
t
a
n
i
m
r
e
T
l
a
n
r
e
t
n
I
k
n
i
S
t
n
e
r
r
u
C
e
l
b
u
o
D
(
)
n
o
i
t
a
n
i
m
r
e
T
0
0
9
1
K
S
l
l
l
L
C
E
P
/
L
C
E
w
o
N
1
0
9
1
K
S
l
l
L
T
T
/
g
n
i
w
S
e
l
b
u
o
D
w
o
N
2
0
9
1
K
S
l
l
l
L
C
E
P
/
L
C
E
w
o
N
3
0
9
1
K
S
l
l
l
L
C
E
P
/
L
C
E
w
o
N
4
0
9
1
K
S
l
l
l
L
C
E
P
/
L
C
E
w
o
N
n
o
i
t
a
l
s
n
a
r
T
n
o
i
t
a
r
u
g
i
f
n
o
C
t
u
p
t
u
O
y
t
il
i
b
a
li
a
v
A
t
c
u
d
o
r
P
n
e
p
O
r
e
t
t
i
m
E
0
5
e
l
b
u
o
D
n
o
i
t
a
n
i
m
r
e
T
0
5
e
c
r
u
o
S
n
o
i
t
a
n
i
m
r
e
T
5
2
9
1
K
S
L
C
E
P
o
t
g
n
i
h
t
y
n
A
l
w
o
N
6
2
9
1
K
S
L
C
E
o
t
g
n
i
h
t
y
n
A
l
w
o
N
7
2
9
1
K
S
L
C
E
P
o
t
g
n
i
h
t
y
n
A
l
w
o
N
8
2
9
1
K
S
L
C
E
o
t
g
n
i
h
t
y
n
A
l
w
o
N
9
2
9
1
K
S
L
C
E
P
o
t
g
n
i
h
t
y
n
A
l
w
o
N
0
3
9
1
K
S
L
C
E
o
t
g
n
i
h
t
y
n
A
l
w
o
N
n
o
it
a
r
u
g
if
n
o
C
t
u
p
t
u
O
t
n
e
r
r
u
C
t
u
p
t
u
O
y
ti
li
b
a
li
a
v
A
t
c
u
d
o
r
P
r
o
t
c
e
ll
o
C
n
e
p
O
9
9
9
1
K
S
l
A
m
2
1
1
0
0
2
2
Q
SK19XX .amily
1:9 Signal Distribution
PRELIMINARY
Revision 1/January 3, 2001
2
www.semtech.com
SK19XX .amily Package Information
5mm x 5mm TQ.P
HIGH-PER.ORMANCE PRODUCTS
Side View
e
A
A1
10
b
SEATING
PLANE
A2
SK19XX .amily
1:9 Signal Distribution
8
D1, E1
2
4
3
D, E
See
Figure 3.
b
Top View
PRELIMINARY
Revision 1/January 3, 2001
3
www.semtech.com
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
4
www.semtech.com
PRELIMINARY
L
11
(L1)
R2
GAGE PLANE
25
R1
01
02
2
S
03
00
9
7
9
b
c
9
b1
9
c1
WITH
PLATING
e / 2
b
l
o
b
m
y
S
N
I
M
M
O
N
X
A
M
e
t
o
N
s
t
n
e
m
m
o
C
A
0
0
.
1
0
1
.
1
0
2
.
1
t
h
g
i
e
H
ff
O
d
n
a
t
S
e
g
a
k
c
a
P
1
A
5
0
.
0
0
1
.
0
5
1
.
0
p
a
G
ri
A
2
A
5
9
.
0
0
0
.
1
5
0
.
1
s
s
e
n
k
c
i
h
T
y
d
o
B
e
g
a
k
c
a
P
D
C
S
B
0
0
.
7
3
1
D
C
S
B
0
0
.
5
2
,
4
h
t
g
n
e
L
y
d
o
B
e
g
a
k
c
a
P
E
C
S
B
0
0
.
7
3
1
E
C
S
B
0
0
.
5
2
,
4
h
t
d
i
W
y
d
o
B
e
g
a
k
c
a
P
N
2
3
t
n
u
o
C
d
a
e
L
e
C
S
B
0
5
.
0
h
c
ti
P
d
a
e
L
b
7
1
.
0
2
2
.
0
7
2
.
0
7
s
s
e
n
k
c
i
h
T
d
a
e
L
1
b
7
1
.
0
0
2
.
0
3
2
.
0
1
R
8
0
.
0
2
R
8
0
.
0
0
2
.
0
0
0
0
o
5
.
3
o
7
o
1
0
0
o
2
0
1
1
o
2
1
o
3
1
o
3
0
1
1
o
2
1
o
3
1
o
S
0
2
.
0
c
9
0
.
0
0
2
.
0
1
c
9
0
.
0
6
1
.
0
L
5
4
.
0
0
6
.
0
5
7
.
0
1
L
.
E
R
0
0
.
1
a
a
a
0
2
.
0
b
b
b
0
2
.
0
c
c
c
8
0
.
0
d
d
d
8
0
.
0
1.
All dimensions and tolerancing conforms
to ANSI Y14.5M-1982.
2.
The top package body size may be smaller
than the bottom package body size by as
much as 0.15 mm.
3.
To be determined at seating plane.
4.
Dimensions D1 and E1 do not include
mold protrusion. Allowable protrusion
is 0.25 mm per side. D1 and E1 are
maximum plastic body size dimensions
including mold mismatch.
5.
Details of Pin 1 identifier optional, but
must be located within the zone indicated.
6.
All dimensions are in millimeters.
7.
Dimension b does not include Dambar
protrusion. Allowable Dambar protrusion
shall not cause the lead width to exceed
the maximum b dimension by more than
0.08 mm. Dambar cannot be located
on the lower radius or the foot. Minimum
space between protrusion and an
adjacent lead is 0.07 mm for 0.4 mm and
0.5 mm pitch packages.
8.
Exact shape of each corner is optional.
9.
These dimensions apply to the flat
section of the lead between 0.10 mm
and 0.25 mm from the lead tip.
10. A1 is defined as the distance from the
seating plane to the lowest point of the
package body.
JEDEC Variation
All Dimensions in Millimeters
HIGH-PER.ORMANCE PRODUCTS
SK19XX .amily Package Information (continued)
5mm x 5mm TQ.P
Figure 1.
Figure 2.
Figure 3.
SK19XX .amily
1:9 Signal Distribution
5
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
SK19XX .amily
1:9 Signal Distribution
lo
b
m
y
S
re
t
e
m
a
ra
P
e
ul
a
V
ti
n
U
V
E
E
V(
yl
p
p
u
S
re
w
o
P
C
C
)V
0
=
-
0
ot
0
.
6
V
V
C
C
V(
yl
p
p
u
S
re
w
o
P
E
E
)V
0
=
0
ot
0
.
6
V
V
I
V(
e
g
at
lo
V
tu
p
nI
C
C
V
,V
0
=
I
V
n
a
ht
e
vi
ta
g
e
n
er
o
m
to
n
E
E
)
0
ot
0
.
6-
V
V
I
V(
e
g
at
lo
V
tu
p
nI
E
V
,V
0
=
I
V
n
a
ht
e
vi
ti
s
o
p
er
o
m
to
n
C
C
)
0
ot
0
.
6
V
I
T
U
O
tn
er
ru
C
tu
pt
u
O
s
u
o
u
ni
tn
o
C
e
gr
u
S
0
5
0
0
1
A
m
A
m
T
A
e
g
n
a
R
er
ut
ar
e
p
m
e
T
g
ni
ta
re
p
O
0
7
+
ot
0
o
C
T
gt
s
er
ut
ar
e
p
m
e
T
e
g
ar
ot
S
0
5
1
+
ot
5
6-
o
C
T
lo
s
5
4
2
:s
d
n
o
c
e
s
3
ot
2
<
(
er
ut
ar
e
p
m
e
T
re
dl
o
S
o
C
)d
er
is
e
d
5
6
2
o
C
* Maximum Ratings are those values beyond which damage to the device may occur.
Absolute Maximum Ratings*
Absolute Maximum Ratings*
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
6
www.semtech.com
PRELIMINARY
SK1900
1:9 Signal Distribution
Description
.eatures
Pin Description
Package Information
The SK1900 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an unpredictable
output pulse. The D - flip-flop is triggered on the falling
edge of the clock.
The SK1900 uses standard open emitter ECL outputs
optimized for:
General purpose ECL compatible applications
Multiple destination applications (daisy
chain).
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
3.3V / 5.2V Compatible
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
OUT
OUT*
VCC
Output Options
Open Emitter
Output Swing
VCC
VEE
1.3V
3.3V
or
5.2V
700 mV
7
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
)
1
e
t
o
N
(
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
0
0
6
C
C
V
- 5
.
1
0
0
7
C
C
V
- 3
.
1
C
C
V
- 1
.
1
V
m
V
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
r
e
w
o
P
E
E
I
C
C
V
- E
E
V
0
.
3
5
3
1
0
7
1
5
.
5
A
m
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
AC Characteristics
Test Conditions: Outputs terminated with 50
to VCC 2V.
Note 1: Production tested to a maximum V
diff
= 2.0V.
Note 1:
Guaranteed by characterization. Not production tested.
AC Test Conditions: Outputs terminated with 50
to VCC 2V.
SK1900
1:9 Signal Distribution
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
8
www.semtech.com
PRELIMINARY
The SK1901 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an unpredictable
output pulse. The D - flip-flop is triggered on the falling
edge of the clock.
The SK1901 uses open emitter outputs with a double
amplitude swing suitable for the following applications:
TTL compatible destinations
Double termination situations that require
a full swing at the destination
Long cables
VCC
VEE
4.5V
or
5.2V
1.9V
1.4V
Description
.eatures
Pin Description
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
2 GHz Fmax
4.5V / 5.2V Compatible
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
OUT
OUT*
VCC
Output Options
Open Emitter
Output Swing
SK1901
1:9 Signal Distribution
9
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
AC Characteristics
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C -
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
+1
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
2
.
1
C
C
V
- 1
.
2
4
.
1
C
C
V
- 9
.
1
C
C
V
- 7
.
1
V
V
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
r
e
w
o
P
E
E
I
C
C
V
- E
E
V
2
.
4
5
3
1
0
7
1
5
.
5
A
m
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
2
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
5
2
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
0
0
2
0
5
2
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
Test Conditions: Outputs terminated with 50
to VCC 3V.
Note 1:
Guaranteed by characterization. Not production tested.
AC Test Conditions: Outputs terminated with 50
to VCC 3V.
SK1901
1:9 Signal Distribution
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
10
www.semtech.com
PRELIMINARY
The SK1902 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an unpredictable
output pulse. The D - flip-flop is triggered on the falling
edge of the clock.
The SK1902 uses 50
outputs with source /sink
capability, and is optimized for applications that require:
Point to point, double terminated, timing
critical lines
Description
.eatures
Pin Description
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
3.3V / 5.2V Compatible
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
50
Source / Sink
Output Swing
OUT
VCC
OUT
VEE
VEE
*
50
50
4 mA
4 mA
VCC
VEE
1.3V
3.3V
or
5.2V
350 mV
At destination
(double termination)
SK1902
1:9 Signal Distribution
11
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C -
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
rr
u
C
l
a
n
r
e
t
n
I
e
c
n
a
d
e
p
m
I
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
T
U
O
R
0
0
6
C
C
V
- 5
.
1
D
B
T
0
4
0
0
7
C
C
V
- 3
.
1
5
5
4
C
C
V
- 1
.
1
D
B
T
0
5
V
m
V
A
m
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
r
e
w
o
P
E
E
I
C
C
V
-
E
E
V
0
.
3
0
1
2
5
6
2
5
.
5
A
m
V
Test Conditions: Outputs unterminated.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
AC Characteristics
Note 1:
Guaranteed by characterization. Not production tested.
AC Test Conditions: Outputs are terminated with 50
to VCC - 2V.
SK1902
1:9 Signal Distribution
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
12
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
3.3V / 5.2V Compatible
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Internal Current Sink
Output Swing
The SK1903 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an unpredictable
output pulse. The D - flip-flop is triggered on the falling
edge of the clock.
The SK1903 outputs are open emitter with an internal
current source, optimized for applications that are:
Point to point, double terminated, timing
critical lines
Non-50
transmission l
ines
OUT
OUT
VEE
VEE
VCC
*
4 mA
4 mA
VCC
VEE
1.3V
3.3V
or
5.2V
350 mV
At destination
(double termination)
Pin Description
SK1903
1:9 Signal Distribution
13
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C -
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
rr
u
C
l
a
n
r
e
t
n
I
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
0
0
6
C
C
V
- 5
.
1
D
B
T
0
0
7
C
C
V
- 3
.
1
5
C
C
V
- 1
.
1
D
B
T
V
m
V
A
m
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
r
e
w
o
P
E
E
I
C
C
V
-
E
E
V
0
.
3
0
1
2
5
6
2
5
.
5
A
m
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
Test Conditions: Outputs Unterminated.
AC Characteristics
AC Test Conditions: Outputs are terminated with 50
to VCC - 2V.
SK1903
1:9 Signal Distribution
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
14
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
3.3V / 5.2V Compatible
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1904 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an unpredictable
output pulse. The D - flip-flop is triggered on the falling
edge of the clock.
The SK1904 outputs are 50
with source and sink
capability, optimized for:
Point to point, series terminated, timing
critical lines
Pin Description
50
Source / Sink
OUT
OUT
VEE
VEE
VGG
*
50
50
8 mA
8 mA
VCC
VEE
1.3V
3.3V
or
5.2V
700 mV
SK1904
1:9 Signal Distribution
15
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
AC Characteristics
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
rr
u
C
l
a
n
r
e
t
n
I
e
c
n
a
d
e
p
m
I
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
T
U
O
R
0
0
6
C
C
V
- 5
.
1
5
.
6
0
4
0
0
7
C
C
V
- 3
.
1
8
5
4
C
C
V
- 1
.
1
0
1
0
5
V
m
V
A
m
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
r
e
w
o
P
E
E
I
C
C
V
-
E
E
V
0
.
3
0
8
2
3
5
3
5
.
5
A
m
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
Test Conditions: Outputs unterminated.
AC Test Conditions: Outputs are terminated with 50
to VCC - 2V.
SK1904
1:9 Signal Distribution
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
16
www.semtech.com
PRELIMINARY
SK1925
Anything to PECL Translator
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
Anything to PECL Translation
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1925 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an upredictable
output pulse. It is also capable of receiving inputs of
any technology or voltage level. The D - flip-flop is
triggered on the falling edge of the clock.
The SK1925 has open emitter PECL outputs.
Target applications:
High speed clock / data lines
that require translation
Multiple destination (daisy chain)
applications
Pin Description
Open Emitter
OUT
OUT*
VCC
VCC
VEE
1.3V
700 mV
VIL
VIL
VIH
VIH
.
.
.
.
VCC
VEE
Input Swing
17
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
AC Characteristics
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
+1
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
0
0
6
C
C
V
- 5
.
1
0
0
7
C
C
V
- 3
.
1
C
C
V
- 1
.
1
V
m
V
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
v
it
i
s
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
v
it
a
g
e
N
E
E
I
C
C
V
E
E
V
0
.
3
- 6
.
3
5
3
1
3
.
3
- 3
.
3
0
7
1
6
.
3
- 0
.
3
A
m
V
V
Test Conditions: Outputs terminated with 50
to VCC 2V.
AC Test Conditions: Outputs are terminated with 50
to VCC - 2V.
SK1925
Anything to PECL Translator
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
18
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
Anything to ECL Translation
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1926 is an extremely fast, stable and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an upredictable
output pulse. It is also capable of receiving inputs of
any technology or voltage level. The D - flip-flop is
triggered on the falling edge of the clock.
The SK1926 has standard open emitter ECL outputs.
Target applications:
High speed clock / data lines
that require translation
Multiple destination (daisy chain)
applications
Pin Description
Open Emitter
VIL
VIL
VIH
VIH
.
.
.
.
VCC
VEE
Input Swing
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VGG
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VGG
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VGG
OUT
OUT*
VGG
VGG
VEE
700 mV
1.3V
SK1926
Anything to ECL Translator
19
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
AC Characteristics
Test Conditions: Outputs terminated with 50
to VGG 2V.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
+1
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
0
0
6
G
G
V
- 5
.
1
0
0
7
G
G
V
- 3
.
1
G
G
V
- 1
.
1
V
m
V
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
v
it
i
s
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
v
it
a
g
e
N
E
E
I
C
C
I
C
C
V
G
G
V
E
E
V
C
C
V
-
G
G
V
0
.
2
- 1
.
- 6
.
3
0
5
3
1
5
4
3
.
3
0
- 3
.
3
0
7
1
2
5
6
.
3
0
.
2
- 0
.
3
6
.
3
A
m
A
m
V
V
V
V
AC Test Conditions: Outputs are terminated with 50
to VGG - 2V.
SK1926
Anything to ECL Translator
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
20
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
Anything to PECL Translation
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1927 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an upredictable
output pulse. It is also capable of receiving inputs of
any technology or voltage level. The D - flip-flop is
triggered on the falling edge of the clock.
The SK1927 uses 50
outputs with source /sink
capability, and is optimized for:
High speed clock / data lines
that require translation
Point to point, double termination
applications
Pin Description
50
Source / Sink
VIL
VIL
VIH
VIH
.
.
.
.
VCC
VEE
Input Swing
OUT
VCC
OUT
VEE
VEE
*
50
50
4 mA
4 mA
VCC
VEE
1.3V
350 mV
At destination
(double termination)
SK1927
Anything to PECL Translator
21
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
AC Test Conditions: Outputs are terminated with 50
to VCC - 2V.
AC Characteristics
Test Conditions: Outputs unterminated.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C -
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
rr
u
C
l
a
n
r
e
t
n
I
e
c
n
a
d
e
p
m
I
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
T
U
O
R
0
0
6
C
C
V
- 5
.
1
D
B
T
0
4
0
0
7
C
C
V
- 3
.
1
5
5
4
C
C
V
- 1
.
1
D
B
T
0
5
V
m
V
A
m
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
vi
ti
s
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
vi
t
a
g
e
N
E
E
I
C
C
V
E
E
V
0
.
3
- 6
.
3
0
1
2
3
.
3
- 3
.
3
5
6
2
6
.
3
- 0
.
3
A
m
V
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
f
r
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
o
C
Note 1: Guaranteed by characterization. Not production tested.
SK1927
Anything to PECL Translator
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
22
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
Anything to ECL Translation
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1928 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an upredictable
output pulse. It is also capable of receiving inputs of
any technology and voltage level. The D - flip-flop is
triggered on the falling edge of the clock.
The SK1928 has 50
outputs with source /sink
capability, and is optimized for:
High speed clock / data lines that
require translation
Point to point, double termination
applications
Pin Description
VCC = 3.3V
VEE = 3.3V
VIL
VIH
VIH
.
.
.
.
.
Input Swing
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VGG
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VGG
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VGG
OUT
VGG
OUT
VEE
VEE
*
50
50
4 mA
4 mA
50
Source / Sink
VGG
VEE
1.3V
350 mV
At destination
(double termination)
SK1928
Anything to ECL Translator
23
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
AC Characteristics
Test Conditions: Outputs unterminated.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
r
r
u
C
h
g
i
H
t
u
p
n
I
t
n
e
r
r
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
r
r
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
r
r
u
C
l
a
n
r
e
t
n
I
e
c
n
a
d
e
p
m
I
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
T
U
O
R
0
0
6
G
G
V
- 5
.
1
D
B
T
0
4
0
0
7
G
G
V
- 3
.
1
5
5
4
G
G
V
- 1
.
1
D
B
T
0
5
V
m
V
A
m
y
l
p
p
u
S
r
e
w
o
P
t
n
e
r
r
u
C
y
l
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
y
l
p
p
u
S
e
v
it
i
s
o
P
e
g
a
tl
o
V
y
l
p
p
u
S
e
v
it
a
g
e
N
E
E
I
C
C
I
C
C
V
G
G
V
E
E
V
C
C
V
-
G
G
V
0
.
2
- 1
.
- 6
.
3
0
0
1
2
5
4
3
.
3
0
- 3
.
3
5
6
2
2
5
6
.
3
0
.
2
- 0
.
3
6
.
3
A
m
A
m
V
V
V
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
SK1928
Anything to ECL Translator
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
24
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
Anything to PECL Translation
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1929 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an upredictable
output pulse. It is also capable of receiving inputs of
any technology and voltage level. The D - flip-flop is
triggered on the falling edge of the clock.
The SK1929 uses 50
outputs with source /sink
capability, and is optimized for:
High speed clock / data lines
that require translation
Point to point, series termination
applications
Pin Description
50
Source / Sink
VIL
VIL
VIH
VIH
.
.
.
.
VCC
VEE
Input Swing
OUT
OUT
VEE
VEE
VCC
*
50
50
8 mA
8 mA
VCC
VEE
1.3V
3.3V
or
5.2V
700 mV
SK1929
Anything to PECL Translator
25
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
DC Characteristics
AC Characteristics
Test Conditions: Outputs unterminated.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C -
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
rr
u
C
l
a
n
r
e
t
n
I
e
c
n
a
d
e
p
m
I
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
T
U
O
R
0
0
6
C
C
V
- 5
.
1
5
.
6
0
4
0
0
7
C
C
V
- 3
.
1
8
5
4
C
C
V
- 1
.
1
0
1
0
5
V
m
V
A
m
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
vi
ti
s
o
P
e
g
a
tl
o
V
yl
p
p
u
S
e
vi
t
a
g
e
N
E
E
I
C
C
V
E
E
V
0
.
3
- 6
.
3
5
7
1
3
.
3
- 3
.
3
1
2
2
6
.
3
- 0
.
3
A
m
V
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
SK1929
Anything to PECL Translator
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
26
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock / Data Driver
3 GHz Fmax
Anything to ECL Translation
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
32 pin, 5 mm x 5 mm
TQFP Package
Output Options
Output Swing
The SK1930 is an extremely fast, stable and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an upredictable
output pulse. It is also capable of receiving inputs of
any technology or voltage level. The D - flip-flop is
triggered on the falling edge of the clock.
The SK1930 uses 50
outputs with source /sink
capability, and is optimized for:
High speed clock / data lines that
require translation
Point to point, series termination
applications
Pin Description
VIL
VIL
VIH
VIH
.
.
.
.
VCC
VEE
Input Swing
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VGG
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VGG
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VGG
50
Source / Sink
OUT
OUT
VEE
VEE
VGG
*
50
50
8 mA
8 mA
VGG
VEE
700 mV
1.3V
SK1930
Anything to ECL Translator
27
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
AC Characteristics
Test Conditions: Outputs unterminated.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
r
r
u
C
h
g
i
H
t
u
p
n
I
t
n
e
r
r
u
C
w
o
L
t
u
p
n
I
H
II
L
II
1
+
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
r
r
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
a
ti
g
i
D
e
g
n
a
R
e
d
o
M
n
o
m
m
o
C
t
u
p
t
u
O
e
c
r
u
o
S
t
n
e
r
r
u
C
l
a
n
r
e
t
n
I
e
c
n
a
d
e
p
m
I
t
u
p
t
u
O
T
U
O
|
-
|
*
T
U
O
2
/
)
*
T
U
O
+
T
U
O
(
K
N
I
S
I
T
U
O
R
0
0
6
G
G
V
- 5
.
1
5
.
6
0
4
0
0
7
G
G
V
- 3
.
1
8
5
4
G
G
V
- 1
.
1
0
1
0
5
V
m
V
A
m
y
l
p
p
u
S
r
e
w
o
P
t
n
e
r
r
u
C
y
l
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
y
l
p
p
u
S
e
v
it
i
s
o
P
e
g
a
tl
o
V
y
l
p
p
u
S
e
v
it
a
g
e
N
E
E
I
C
C
I
C
C
V
G
G
V
E
E
V
C
C
V
-
G
G
V
0
.
2
- 1
.
- 6
.
3
0
5
7
1
5
4
3
.
3
0
- 3
.
3
1
2
2
2
5
6
.
3
0
.
2
- 0
.
3
6
.
3
A
m
A
m
V
V
V
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
SK1930
Anything to ECL Translator
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
28
www.semtech.com
PRELIMINARY
Description
.eatures
Package Information
.unctional Block Diagram
1:9 Clock/Data Driver
3 GHz Fmax
3.3V / 5.2V Compatible
IN
IN*
CLK
CLK*
SEL*
SEL
OUT0
OUT0*
OUT1
OUT1*
OUT2
OUT2*
OUT3
OUT3*
OUT4
OUT4*
OUT5
OUT5*
OUT6
OUT6*
OUT7
OUT7*
OUT8
OUT8*
D
D*
Q
Q*
0
1
VEE
SEL
SEL*
CLK
CLK*
IN
IN*
VCC
VCC
OUT3*
OUT3
OUT4
OUT4*
OUT5*
OUT5
VEE
VCC
OUT0
OUT0*
OUT1*
OUT1
OUT2
OUT2*
VEE
VEE
OUT8*
OUT8
OUT7
OUT7*
OUT6*
OUT6
VCC
32 pin, 5 mm x 5 mm
TQ.P Package
Output Options
Open Collector
The SK1999 is an extremely fast, stable, and accurate
low skew 1:9 clock / signal distributor featuring a
synchronous enable, which allows the outputs to be
turned off and on without the risk of an unpredictable
output pulse. The D - flip-flop is triggered on the falling
edge of the clock.
The SK1999 has open collector (CML) outputs, targeted
for:
Ultra high speed applications
Adjustable common mode levels at the
destination
.
Pin Description
OUT
OUT*
VEE
12 mA
SK1999
1:9 Signal Distribution
29
www.semtech.com
HIGH-PER.ORMANCE PRODUCTS
Revision 1/January 23, 2001
PRELIMINARY
Note 1: Guaranteed by characterization. Not production tested.
AC Characteristics
Test Conditions: Outputs terminated with 50
to VCC.
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
s
t
u
p
n
I
h
g
i
H
t
u
p
n
I
w
o
L
t
u
p
n
I
H
I
V
L
I
V
0
.
2
+
E
E
V
E
E
V
C
C
V
C
C
V
- 2
.
V
V
N
I( -
,
*
N
I
K
L
C
-
L
E
S
,
*
K
L
C
-
)
*
L
E
S
e
g
a
tl
o
V
t
u
p
n
I
l
a
it
n
e
r
e
ff
i
D
t
u
p
n
I
|
-
|
*
t
u
p
n
I
2
.
3
.
4
V
)
*
K
L
C
/
K
L
C
(
s
t
u
p
n
I
g
n
i
m
i
T
t
n
e
rr
u
C
h
g
i
H
t
u
p
n
I
t
n
e
rr
u
C
w
o
L
t
u
p
n
I
H
II
L
II
+1
-1
5
2
+
1
+
A
A
)
*
L
E
S
/
L
E
S
,
*
N
I
/
N
I(
s
t
u
p
n
I
l
a
n
o
it
c
n
u
.
t
n
e
rr
u
C
t
u
p
n
I
L
II
,
H
II
- 0
2
4
0
5
2
+
A
s
t
u
p
t
u
O
h
g
i
H
t
n
e
rr
u
C
t
u
p
t
u
O
w
o
L
t
n
e
rr
u
C
t
u
p
t
u
O
H
O
I
L
O
I
D
B
T
D
B
T
0
2
1
D
B
T
D
B
T
A
m
A
m
yl
p
p
u
S
r
e
w
o
P
t
n
e
rr
u
C
yl
p
p
u
S
r
e
w
o
P
e
g
a
tl
o
V
yl
p
p
u
S
r
e
w
o
P
E
E
I
C
C
V
- E
E
V
0
.
3
5
8
1
3
3
2
5
.
5
A
m
V
r
e
t
e
m
a
r
a
P
l
o
b
m
y
S
n
i
M
p
y
T
x
a
M
s
ti
n
U
n
o
it
p
O
e
c
n
a
m
r
o
fr
e
P
h
g
i
H
y
a
l
e
D
n
o
it
a
g
a
p
o
r
P
)
0
=
L
E
S
(
T
U
O
o
t
K
L
C
)
1
=
L
E
S
(
T
U
O
o
t
K
L
C
T
U
O
o
t
L
E
S
d
p
T
d
p
T
d
p
T
0
9
4
0
4
3
0
3
3
0
9
5
0
4
4
0
3
4
0
9
6
0
4
5
0
3
5
s
p
s
p
s
p
w
e
k
S
l
e
n
n
a
h
C
o
t
l
e
n
n
a
h
C
0
2
<
s
p
)
1
e
t
o
N
(
y
c
n
e
u
q
e
r
.
g
n
it
a
r
e
p
O
m
u
m
i
x
a
M
x
a
m
.
0
.
3
z
H
G
)
1
e
t
o
N
(
h
t
d
i
W
e
s
l
u
P
m
u
m
i
n
i
M
n
i
m
W
P
0
6
1
s
p
)
1
e
t
o
N
(
K
L
C
o
t
N
I
e
m
i
T
p
U
t
e
S
e
m
i
T
d
l
o
H
u
s
T
h
T
0
0
1
0
0
1
s
p
s
p
)
%
0
8
/
%
0
2
(
s
e
m
i
T
ll
a
.
d
n
a
e
s
i
R
t
u
p
t
u
O
f
T
/
r
T
5
2
1
0
5
1
s
p
t
n
e
i
c
if
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
/
d
p
T
T
1
<
/
s
p
oC
SK1999
1:9 Signal Distribution
DC Characteristics
Revision 1/January 23, 2001
HIGH-PER.ORMANCE PRODUCTS
30
www.semtech.com
PRELIMINARY
g
n
ir
e
d
r
O
e
d
o
C
D
I
e
g
a
k
c
a
P
e
r
u
t
a
r
e
p
m
e
T
e
g
n
a
R
0
0
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
1
0
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
2
0
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
3
0
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
4
0
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
5
2
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
6
2
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
7
2
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
8
2
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
9
2
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
0
3
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
9
9
9
1
K
S
P
.
Q
T
-
2
3
m
m
5
x
5
l
a
i
c
r
e
m
m
o
C
Note: For tape and reel, add the letter "T" at the end of
ordering code.
+
+
+
+
+
+
+
+
+
+
+
+
+ + +
+ + +
+ + +
+ + +
PIN 1
+
+
+
+
+
+
+
Linear Direction of Travel
Linear Direction of Travel
Typical
Typical
View from
Tape Side
View from
Tape Side
PLCC Devices
SOIC & MSOP
Devices
Ordering Information
To order devices which are to be delivered in Tape and Reel, add the suffix T to the
device number being ordered.
Tape and Reel
Semtech's tape and reel packaging fully conforms to the latest EIA-481-1A and EIA-481-2A specifications.
The antistatic embossed tape provides a secure cavity sealed with a peel-back cover tape.
+
+
+
+
+
+
+
+
+
+
+
+
+
+ +
PIN 1
Linear Direction of Travel
Typical
View from
Tape Side
+
+
+
LQFP & TQFP
Devices
e
p
y
T
e
c
iv
e
D
h
t
d
i
W
e
p
a
T
)
m
m
(
x
a
M
l
e
e
R
/
e
c
iv
e
D
e
zi
S
l
e
e
R
)
h
c
n
i(
x
a
M
e
b
u
T
/
e
c
iv
e
D
8
2
-
C
C
L
P
4
2
0
5
7
3
1
7
3
8
-
C
I
O
S
2
1
0
0
5
,
2
3
1
8
9
6
1
-
C
I
O
S
6
1
0
0
5
,
2
3
1
9
4
0
2
-
C
I
O
S
4
2
0
0
0
,
1
3
1
8
3
8
-
P
O
S
M
2
1
0
0
5
,
2
3
1
0
5
0
1
-
P
O
S
M
2
1
0
0
5
,
2
3
1
0
5
)
m
m
7
x
7
(
2
3
-
P
.
Q
L
6
1
0
0
0
,
1
3
1
)
y
a
rt
(
0
5
2
)
m
m
7
x
7
(
2
3
-
P
.
Q
T
6
1
0
0
0
,
1
3
1
)
y
a
rt
(
0
5
2
)
m
m
5
x
5
(
2
3
-
P
.
Q
T
6
1
0
0
0
,
1
3
1
)
y
a
rt
(
0
6
3
Division Headquarters
10021 Willow Creek Road
San Diego, CA 92131
Phone (858) 695-1808
FAX (858)695-2633
Marketing Group
1111 Comstock Street
Santa Clara, CA 95054
Phone: (408) 566-8776
FAX: (408) 727-8994
Semtech Corporation
High-Performance Products Division
Contact Information
SK19XX Family
1:9 Signal Distribution
Ordering Information
PDF 
ZIP