Pin
Function
Q, Q
Differential ECL Output
D
TTL Input
V
CC
Positive Supply
V
EE
Negative Supply
GND
Ground
DESCRIPTION
s
500ps typical propagation delay
s
Differential ECL output
s
PNP TTL input for minimal loading
s
Flow-through pinouts
s
Available in 8-pin SOIC package
The SY100ELT24 is a TTL-to-differential ECL
translator. Because ECL levels are used, a +5V, 5.2V
(or 4.5V) and ground are required. The small outline 8-
lead SOIC package and the single gate of the ELT24
makes it ideal for those applications where performance,
space and low power are at a premium.
FEATURES
TTL-to-DIFFERENTIAL
ECL TRANSLATOR
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
SOIC
TOP VIEW
SY100ELT24
Rev.: A
Amendment: /0
Issue Date: November 1999
1
V
EE
V
CC
Q
GND
Q
2
3
4
5
6
7
8
D
NC
NC
ECL
TTL
1
2
SY100ELT24
Micrel
TRUTH TABLE
D
Q
Q
H
H
L
L
L
H
Open
H
L
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
ECL 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. Max. Min. Max. Unit
Condition
I
CC
Power Supply Current
--
10
--
10
--
10
--
10
mA
--
I
EE
Power Supply Current
--
20
--
20
--
20
--
20
mA
No output load
DC ELECTRICAL CHARACTERISTICS
V
CC
= 4.5V to 5.5V; V
EE
= 4.2V to 5.5V
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
300
900
300
900
300
500
900
300
900
ps
50
to 2.0V
t
PHL
t
r
Output Rise/Fall Time
200
700
200
700
200
300
700
200
700
ps
50
to 2.0V
t
f
20% to 80%
f
MAX
Maximum Input Frequency
200
--
200
--
200
--
--
200
--
MHz
AC ELECTRICAL CHARACTERISTICS
V
CC
= 4.5V to 5.5V; V
EE
= 4.2V to 5.5V
4
SY100ELT24
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
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