The SY10/100ELT23 are dual differential PECL-to-TTL
translators. Because PECL (Positive ECL) levels are
used, only +5V and ground are required. The small outline
8-lead SOIC package and the low skew dual gate design
of the ELT23 makes it ideal for applications which require
the translation of a clock and a data signal.
The ELT23 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.
PIN CONFIGURATION/BLOCK DIAGRAM
PIN NAMES
Pin
Function
TTL Outputs
Differential PECL Inputs
+5.0V Supply
Ground
D
0
D
0
D
1
D
1
1
2
PECL
3
4
TTL
8
7
6
5
V
CC
Q
0
Q
1
GND
Q
n
D
n
V
CC
GND
SOIC
TOP VIEW
Rev.: G
Amendment: 0
1
Issue Date: December 1999
Micrel
ClockWorks™
SY10ELT23
SY100ELT23
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
CC
V
I
V
O
I
O
T
store
T
A
Paramter
Power Supply Voltage
PECL Input Voltage
Voltage Applied to
Output at HIGH State
Current Applied to
Output at LOW State
Storage Temperature
Operating Temperature
Value
–0.5 to +7.0
0V to V
CC
+0.5
–0.5 to +5.5
Twice the
Rated I
OL
–65 to +150
–40 to +85
Unit
V
V
V
mA
°C
°C
TRUTH TABLE
D
L
H
Open
D
H
L
Open
Q
L
H
L
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.
DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
I
CC
Parameter
Power Supply Current
Min.
—
Max.
30
T
A
= 0
°
C
Min.
—
Max.
30
T
A
= +25
°
C
Min.
—
Max.
30
T
A
= +85
°
C
Min.
—
Max.
30
Unit
mA
Condition
—
NOTE:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
+4.5V to +5.5V.
+4.75V to +5.5V.
AC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
t
PLH
t
PHL
t
skpp
t
skew++
t
skew– –
t
r
t
f
f
MAX
Parameter
Propagation Delay
D to Output Q
Part-to-Part Skew
(2,5)
Within-Device Skew
(3,5)
Within-Device Skew
(4,5)
Output Rise/Fall Time
1.0V to 2.0V
Maximum Input Frequency
(5)
Min.
2.5
—
—
—
—
160
Max.
3.5
0.5
0.3
0.3
1.5
—
T
A
= 0
°
C
Min.
2.5
—
—
—
—
160
Max.
3.5
0.5
0.3
0.3
1.5
—
T
A
= +25
°
C
Min.
2.5
—
—
—
—
160
Max.
3.5
0.5
0.3
0.3
1.5
—
T
A
= +85
°
C
Min.
2.5
—
—
—
—
160
Max.
3.5
0.5
0.3
0.3
1.5
—
Unit
ns
ns
ns
ns
ns
MHz
Condition
C
L
= 50pF
C
L
= 50pF
C
L
= 50pF
C
L
= 50pF
C
L
= 50pF
C
L
= 50pF
NOTES:
1. Parametric values specified at:
2.
3.
4.
5.
100ELT23 Series:
10ELT23 Series
Device-to-Device Skew considering HIGH-to-HIGH transitions at common V
CC
level.
Within-Device Skew considering HIGH-to-HIGH transitions at common V
CC
level.
Within-Device Skew considering LOW-to-LOW transitions at common V
CC
level.
These parameters are guaranteed but not tested.
5 volt Power Supply Range
+4.5V to +5.5V.
+4.75V to +5.5V.
2
Micrel
ClockWorks™
SY10ELT23
SY100ELT23
TTL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
V
OH
V
OL
I
OS
Parameter
Output HIGH Voltage
Output LOW Voltage
Output Short Circuit Current
Min.
2.5
2.0
—
–80
Max.
—
—
0.5
–200
T
A
= 0
°
C
Min.
2.5
2.0
—
–80
Max.
—
—
0.5
–200
T
A
= +25
°
C
Min.
2.5
2.0
—
–80
Max.
—
—
0.5
–200
T
A
= +85
°
C
Min.
2.5
2.0
—
–80
Max.
—
—
0.5
–200
Unit
V
V
V
mA
Condition
I
OH
= –3.0mA
I
OH
= –15mA
I
OL
= 24mA
V
OUT
= 0V
NOTE:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
+4.5V to +5.5V.
+4.75V to +5.5V.
PECL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
I
IH
I
IL
V
CMR
V
PP
V
IH
Parameter
Input HIGH Current
Input HIGH Current
Common Mode Range
Minimum Peak-to-Peak
Input
(2)
Min.
—
0.5
2.2
200
Typ.
—
—
—
—
—
—
—
—
Max.
150
—
V
CC
—
4110
4120
3500
3525
Min.
—
0.5
2.2
200
3830
3835
3050
3190
T
A
= 0
°
C
Typ.
—
—
—
—
—
—
—
—
Max.
150
—
V
CC
—
4160
4120
3520
3525
—
0.5
2.2
200
3870
3835
3050
3190
T
A
= +25
°
C
Min.
Typ.
—
—
—
—
—
—
—
—
Max.
150
—
V
CC
—
4190
4120
3520
3525
—
0.5
2.2
200
3940
3835
3050
3190
T
A
= +85
°
C
Min.
Typ.
—
—
—
—
—
—
—
—
Max.
150
—
V
CC
—
4280
4120
mV
3555
3525
Unit
µA
µA
V
mV
mV
Input HIGH Voltage
(3)
10ELT 3770
100ELT 3835
Input LOW Voltage
(3)
10ELT 3050
100ELT 3190
V
IL
NOTES:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
+4.5V to +5.5V.
+4.75V to +5.5V.
2. 200mV input guarantees full logic at output.
3. These values are for V
CC
= 5.0V. Level Specifications will vary 1:1 V
CC
.
PRODUCT ORDERING CODE
Ordering
Code
SY10ELT23ZC
SY10ELT23ZCTR
SY100ELT23ZC
SY100ELT23ZCTR
Package
Type
Z8-1
Z8-1
Z8-1
Z8-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
V
CC
Range
(V)
+4.75 to +5.5
+4.75 to +5.5
+4.5 to +5.5
+4.5 to +5.5
3
Micrel
ClockWorks™
SY10ELT23
SY100ELT23
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL-SYNERGY
TEL
3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
FAX
+ 1 (408) 980-9191
+ 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.
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