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Электронный компонент: SY100ELT21LZC

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Pin
Function
Q
TTL Output
D, /D
Differential LVPECL Inputs
V
CC
+3.3V Supply
V
BB
Reference Output
GND
Ground
DESCRIPTION
s
3.3V power supply
s
2.0ns typical propagation delay
s
Low power
s
Differential LVPECL inputs
s
24mA TTL outputs
s
Flow-through pinouts
s
Available in 8-pin SOIC package
The SY10/100ELT21L are single differential LVPECL-
to-LVTTL translators using a single +3.3V power supply.
Because LVPECL (Low Voltage Positive ECL) levels are
used, only +3.3V and ground are required. The small
outline 8-lead SOIC package and low skew single gate
design make the ELT21L ideal for applications that require
the translation of a clock or data signal where minimal
space, low power, and low cost are critical.
V
BB
allows a differential, single-ended, or AC-coupled
interface to the device. If used, the V
BB
output should be
bypassed to V
CC
with 0.01
F capacitor.
Under open input conditions, the /D will be biased at a
V
CC
/2 voltage level and the D input will be pulled to
ground. This condition will force the Q output low to
provide added stability.
The ELT21L is available in both ECL standards: the
10ELT is compatible with positive ECL 10H logic levels,
while the 100ELT is compatible with positive ECL 100K
logic levels.
FEATURES
3.3V DIFFERENTIAL
LVPECL-to-LVTTL
TRANSLATOR
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
ClockWorksTM
SY10ELT21L
SY100ELT21L
1
NC
D
D
V
BB
8
V
CC
Q
NC
GND
7
6
5
2
3
4
PECL
TTL
1
Rev.: B
Amendment: /0
Issue Date:
April 2000
2
ClockWorksTM
SY10ELT21L
SY100ELT21L
Micrel
TRUTH TABLE
D
/D
Q
L
H
L
H
L
H
Open
Open
L
Symbol
Paramter
Value
Unit
V
CC
Power Supply Voltage
0.5 to +3.8
V
V
I
PECL Input Voltage
0V to V
CC
+0.5
V
V
O
Voltage Applied to
0.5 to V
CC
V
Output at HIGH State
I
O
Current Applied to
Twice the
mA
Output at LOW State
Rated I
OL
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
I
OS
Output Short Circuit Current
80
275
80
275
80
--
275
80
275
mA
V
OUT
= 0V
I
CC
Power Supply Current
--
20
--
20
--
14
20
--
20
mA
V
OH
Output HIGH Voltage
2.0
--
2.0
--
2.0
--
--
2.0
--
V
I
OH
= 3.0mA
V
OL
Output LOW Voltage
--
0.5
--
0.5
--
--
0.5
--
0.5
V
I
OL
= 24mA
TTL DC ELECTRICAL CHARACTERISTICS
V
CC
= +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
I
IH
Input HIGH Current
--
150
--
150
--
--
150
--
150
A
I
IL
Input LOW Current
D
0.5
--
0.5
--
0.5
--
--
0.5
--
A
/D
300
--
300
--
300
--
--
300
--
V
IH
Input HIGH Voltage
(2)
10ELT
2070
2410
2130
2460
2170
--
2490
2240
2580
mV
100ELT
2135
2420
2135
2420
2135
--
2420
2135
2420
V
IL
Input LOW Voltage
(2)
10ELT
1350
1800
1350
1820
1350
--
1820
1350
1855
mV
100ELT
1490
1825
1490
1825
1490
--
1825
1490
1825
V
BB
Reference Output
(2)
10ELT
1870
2000
1920
2030
1950
2000
2050
1990
2110
mV
100ELT
1920
2040
1920
2040
1920
1980
2040
1920
2040
PECL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
5%
NOTES:
1. These values are for V
CC
= 3.3V. Level Specifications will vary 1:1 V
CC
.
3
ClockWorksTM
SY10ELT21L
SY100ELT21L
Micrel
NOTES:
1. Part-to-Part Skew considering HIGH-to-HIGH transitions at common V
CC
level.
2. These parameters are guaranteed but not tested.
3. Frequency at which output levels will meet a 0.8V to 2.0V minimum swing.
4. The f
MAX
value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater.
5. 100mV input guarantees full logic at output.
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
1.5
2.5
1.5
2.5
1.5
2.0
2.5
1.5
2.5
ns
C
L
= 20pF
t
PHL
t
skpp
Part-to-Part Skew
(1,2)
--
0.5
--
0.5
--
--
0.5
--
0.5
ns
C
L
= 20pF
f
MAX
Maximum Input Frequency
(2,3,4)
275
--
275
--
275
--
--
275
--
MHz
C
L
= 20pF
V
CMR
Common Mode Range
1.2
V
CC
1.2
V
CC
1.2
--
V
CC
1.2
V
CC
V
V
PP
Minimum Peak-to-Peak Input
(5)
100
--
100
--
100
--
--
100
--
mV
t
r
Output Rise/Fall Time
0.5
1.0
0.5
1.0
0.5
--
1.0
0.5
1.0
ns
C
L
= 20pF
t
f
(1.0V to 2.0V)
AC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
5%
PRODUCT ORDERING CODE
Ordering
Package
Operating
V
CC
Range
Code
Type
Range
(V)
SY10ELT21LZC
Z8-1
Commercial
+3.3V
5%
SY10ELT21LZCTR
Z8-1
Commercial
+3.3V
5%
SY100ELT21LZC
Z8-1
Commercial
+3.3V
5%
SY100ELT21LZCTR
Z8-1
Commercial
+3.3V
5%
4
ClockWorksTM
SY10ELT21L
SY100ELT21L
Micrel
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL-SYNERGY
3250 SCOTT BOULEVARD
SANTA CLARA
CA 95054
USA
TEL
+ 1 (408) 980-9191
FAX
+ 1 (408) 914-7878
WEB
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
2000 Micrel Incorporated