Pin
Function
Q, /Q
Differential LVPECL Output
D
LVTTL Input
V
CC
Positive Supply
GND
Ground
DESCRIPTION
s
3.3V and 5V power supply options
s
300ps typical propagation delay
s
Differential LVPECL output
s
I
CC
Max 20mA
s
PNP LVTTL input for minimal loading
s
Q output will default HIGH with inputs open
s
High bandwidth to 800MHz typical
s
Available in 8-pin MSOP and SOIC package
The SY10/100EPT20V is a TTL/CMOS to differential
PECL translator. Capable of running from a 3.3 or 5V
supply, the part can be used in either LVTTL/LVCMOS/
LVPECL or TTL/CMOS/PECL systems.
The device only requires a single positive supply of
3.3V or 5V - no negative supply is required.
The tiny 8-pin MSOP package and the low skew, dual
gate design of the EPT20V makes it ideal for those
applications where space, performance, and low power
are at a premium.
FEATURES
3.3V/5V LVTTL/LVCMOS-to-
DIFFERENTIAL LVPECL
TRANSLATOR
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
(Available in 8-pin SOIC or 8-pin MSOP)
SY10EPT20V
SY100EPT20V
1
NC
Q
/Q
NC
8
V
CC
D
NC
GND
7
6
5
2
3
4
LVPECL
LVTTL
1
Rev.: A
Amendment: /1
Issue Date: July 2000
2
SY10EPT20V
SY100EPT20V
Micrel
T
A
= 40
C
T
A
= 0
C
T
A
= +25
C
T
A
= +85
C
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Typ.
Max.
Min.
Max.
Unit
Condition
I
CC
Power Supply Current
--
20
--
20
--
--
20
--
20
mA
--
TRUTH TABLE
D
Q
/Q
H
H
L
L
L
H
Open
H
L
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
10% or +5.0V
10%
Symbol
Paramter
Value
Unit
V
CC
Power Supply Voltage
0.5 to +7.0
V
V
I
TTL Input Voltage
0.5 to V
CC
V
I
I
TTL Input Current
30 to +5.0
mA
I
OUT
PECL Output Current
mA
Continuous
50
Surge
100
T
store
Storage Temperature
65 to +150
C
T
A
Operating Temperature
40 to +85
C
NOTE:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS
are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections
of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions
for extended periods may affect device reliability.
ABSOLUTE MAXIMUM RATINGS
(1)
T
A
= 40
C
T
A
= 0
C
T
A
= +25
C
T
A
= +85
C
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Typ.
Max.
Min.
Max.
Unit
Condition
V
IH
Input HIGH Voltage
2.0
--
2.0
--
2.0
--
--
2.0
--
V
--
V
IL
Input LOW Voltage
--
0.8
--
0.8
--
--
0.8
--
0.8
V
--
I
IH
Input HIGH Current
--
20
--
20
--
--
20
--
20
A
V
IN
= 2.7V
--
100
--
100
--
--
100
--
100
V
IN
= V
CC
I
IL
Input LOW Current
--
0.2
--
0.2
--
--
0.2
--
0.2
mA
V
IN
= 0.5V
V
IK
Input Clamp Voltage
--
1.2
--
1.2
--
--
1.2
--
1.2
V
I
IN
= 18mA
TTL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
10% or +5.0V
10%
T
A
= 40
C
T
A
= 0
C
T
A
= +25
C
T
A
= +85
C
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Typ.
Max.
Min.
Max.
Unit
Condition
V
OH
Output HIGH Voltage
(1)
mV
10EPT
3920
4110
3980
4160
4020
--
4190
4090
4280
100EPT
3915
4120
3975
4120
3975
--
4120
3975
4120
V
OL
Output LOW Voltage
(1)
mV
10EPT
3050
3350
3050
3370
3050
--
3370
3050
3405
100EPT
3170
3445
3190
3380
3190
--
3380
3190
3380
PECL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
10% or +5.0V
10%
NOTES:
1. These values are for V
CC
= 5.0V. Level Specifications will vary 1:1 with V
CC
.
3
SY10EPT20V
SY100EPT20V
Micrel
PRODUCT ORDERING INFORMATION
Ordering
Package
Operating
V
CC
Range
Code
Type
Range
(V)
SY10EPT20VZC
Z8-1
Commercial
+3.3V
5%
SY10EPT20VZCTR
Z8-1
Commercial
+3.3V
5%
SY10EPT20VKC
K8-1
Commercial
+3.3V
5%
SY10EPT20VKCTR
K8-1
Commercial
+3.3V
5%
SY100EPT20VZC
Z8-1
Commercial
+3.3V
5%
SY100EPT20VZCTR
Z8-1
Commercial
+3.3V
5%
SY100EPT20VKC
K8-1
Commercial
+3.3V
5%
SY100EPT20VKCTR
K8-1
Commercial
+3.3V
5%
T
A
= 40
C
T
A
= 0
C
T
A
= +25
C
T
A
= +85
C
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Typ.
Max.
Min.
Max. Unit
Condition
t
PLH
Propagation Delay
(1)
100
600
100
600
100
--
600
100
600
ps
50
to V
CC
2.0V
t
PHL
t
skpp
Part-to-Part Skew
(2)
--
500
--
500
--
--
500
--
500
ps
50
to V
CC
2.0V
f
MAX
Maximum Input Frequency
350
--
350
--
350
--
--
350
--
MHz
50
to V
CC
2.0V
f
MAX
Maximum Toggle Frequency
--
800
--
800
--
--
800
--
800
MHz
50
to V
CC
2.0V
t
r
Output Rise/Fall Time
200
500
200
500
200
--
500
200
500
ps
50
to V
CC
2.0V
t
f
(20% to 80%)
AC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= +3.3V
10% or +5.0V
10%
NOTES:
1. Input Rise Time < 1.0ns.
2. Guaranteed by design. Not tested in production.
PDF 
ZIP
