SK100ELT23W
Dual Differential PECL to CMOS/TTL or
LVPECL to LVCMOS/LVTTL Translator
HIGH-PERFORMANCE PRODUCTS
Description
The SK100ELT23W is a dual differential PECL to
CMOS/TTL or LVPECL to LVCMOS/LVTTL Translator.
Since PECL (Positive ECL) levels are used, only positive
V
CC
and ground are required. The small outline, 8 lead
SOIC package, low skew, and the dual gate design of
the SK100ELT23W makes it ideal for applications which
require the translation of a clock and a data signal.
Unlike the TTL totem pole outputs, the outputs of the
ELT23W can be interfaced directly to CMOS inputs with
better VOH (vcc - 0.5V) levels. With extended supply
voltage capability, the device is functionally compatible
with MC100ELT23 (5V) and MC100LVELT23 (3.3V).
The SK100ELT23W is available in only the ECL 100K
standard. Since there are no PECL outputs or an
external V
BB
reference, the SK100ELT23W does not
require both ECL standard versions. The PECL inputs
are differential; there is no specified difference
between the differential input 10H and 100K
standards. Therefore, the SK100ELT23W can accept
any standard differential PECL input referenced from a
V
CC
of 3.0V to 5.5V.
Features
•
•
•
•
•
•
•
•
•
•
•
•
Extended Supply Voltage Range: (VCC = +3.0V to
5.5V, VEE = 0V)
2.4 ns Typical Propagation Delay
Differential PECL Inputs
True Complementary CMOS/TTL Output
Flow Through Pinouts
Functionally compatible with MC100ELT23 and
MC100LVELT23
Internal 75KW Input Pulldown Resistors
Specified Over Industrial Temperature Range:
- 40
o
C to 85
o
C
ESD Protection of >4000V
Small Outline 8 Lead SOIC (150 mils) Package
Flammability Rate: UL-94 code V-0
Moisture Sensitivity: Level 1
Functional Block Diagram
PIN Names
Pin
Function
CMOS/TTL Outputs
Differential PECL Inputs
Positive V
CC
Supply
Ground
D0
1
8
VCC
Q0, Q1
D0, D0*, D1,
D1*
7
D0*
2
Q0
V
CC
GND
PECL
CMOS/TTL
D1*
3
6
Q1
D1
4
5
GND
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SK100ELT23W
HIGH-PERFORMANCE PRODUCTS
Package Information
8 Pin SOIC Package
TOP VIEW
END VIEW
A
D
C
8
E
1
5
H
0.25 M
B M
4
B
e
h x 45
o
q
A
C
A1
B
0.25 M
C B
Seating
Plane
0.10
S
A
S
L
MILLIMETERS
DIM
A
A1
B
C
D
E
e
H
h
L
q
MIN
1.35
0.10
0.33
0.19
4.80
3.80
MAX
1.75
0.25
0.51
0.25
5.00
4.00
1.27 BSC
5.80
0.25
0.40
0
o
6.20
0.50
1.27
8
o
NOTES:
1. Dimensions are in millimeters.
2. Dimensions D and E do no include mold protrusion.
3. Maximum mold protrusion 0.15 per side.
4. Dimension B does not include Dambar protrusion.
Allowable Dambar protrusion shall be 0.127 total
in excess of the B dimension at maximum material
condition.
Revision 1/November 14, 2001
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SK100ELT23W
HIGH-PERFORMANCE PRODUCTS
DC Characteristics
SK100ELT23W TTL Output DC Electrical Characteristics
(V
CC
= 3.0V to 5.5V; TA = –40
o
C to 85
o
C)
Symbol
V
OH
V
OL
I
CC
Characteristic
Output HIGH Voltage
Output LOW Voltage
Power Supply Cur rent
16
30
Min
VCC - 0.5
0.5
38
Typ
Max
Unit
V
V
mA
Condition
I
OH
= - 3 mA
I
OL = 8 mA
SK100ELT23W PECL Input DC Electrical Characteristics
(V
CC
= +3.0V to +5.5V)
TA = - 4 0
o
C
Symbol
Characteristic
Min
Max
TA = 0
o
C
Min
Max
TA = + 2 5
o
C
Min
Max
TA = + 8 5
o
C
Min
Max
Unit
Cond
V
IH
VIL
V
PP
I
IN
I n p u t H I G H Vo l t a g e
I n p u t L OW Vo l t a g e
M i n i m u m Pe a k - t o - Pe a k I n p u t
Input Cur rent
3835
2135
3190
1490
200
-150
4120
2420
3525
1825
1000
150
3835
2135
3190
1490
200
-150
4120
2420
3525
1825
1000
150
3835
2135
3190
1490
200
-150
4120
2420
3525
1825
1000
150
3835
2135
3190
1490
200
-150
4120
2420
3525
1825
1000
150
mV
mV
mV
mV
mV
µA
VCC = 5.0V
VCC = 3.3V
VCC = 5.0V
VCC = 3.3V
Note 1
AC Characteristics
SK100ELT23W AC Electrical Characteristics
(V
CC
= +3.0V to +5.5V
)
TA = - 40
o
C
Symbol
Fmax
t
skpp
t
sk++
T
sk - -
t
PLH
t
PHL
t
r,
t
f
VCMR
Characteristic
Max Input Frequency1
Par t-to-Par t Skew
1
Output-to-Output Skew
Output-to-Output Skew
Propagation Delay
1
Output Rise/Fall
1.0V to 2.0V
Common Mode Range
2
2.6
3.1
Min
180
0.5
60
25
3.6
2.4
3.0
Typ
Max
Min
180
0.5
60
25
3.4
2.2
2.6
TA = 0
o
C
Typ
Max
Min
180
0.5
60
25
3.0
2.0
2.4
TA = +25
o
C
Typ
Max
Min
180
0.5
110
25
2.6
TA = +85
o
C
Typ
Max
Unit
MH
Z
ps
ps
ps
ns
0.38
GND +
1.2
0.75
1.5
VCC
- 0.7
0.38
GND +
1.2
0.75
1.5
VCC
- 0.7
0.38
GND +
1.2
0.75
1.5
VCC
- 0.7
0.38
GND +
1.2
0.75
1.5
VCC
- 0.7
ns
V
Revision 1/November 14, 2001
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SK100ELT23W
HIGH-PERFORMANCE PRODUCTS
AC Characteristics
(continued)
Notes:
1. C
L
= 20pF
2. CMR range is referenced to the most positive side of the differential input signal. Normal operation is
obtained if the high level falls within the specified range and the peak-to-peak voltage lies between
VPP
(min)
and 1V. The lower end of the CMR range varies 1:1 with GND and is equal to GND + 1.2V.
3. For part ordering description, see HPP Part Ordering Information Data Sheet.
Ordering Information
Ordering Code
Package ID
Temperature Range
Marking Information
8 PIN SOIC PACKAGE
SK100ELT23WD
8-SOIC
Industrial
Function / Voltage &
Device Operation
Function Code / Part Number
SK100ELT23WDT
8-SOIC
Industrial
SK100ELT23WU
Die
H = 10
K = 100
E
L
Assembly
Lot Number
Y
Y
W
W
YY: Last two digits of the Year
WW: Working Week
Contact Information
Division Headquarters
10021 Willow Creek Road
San Diego, CA 92131
Phone: (858) 695-1808
FAX:
(858) 695-2633
Semtech Corporation
High-Performance Products Division
Marketing Group
1111 Comstock Street
Santa Clara, CA 95054
Phone: (408) 566-8776
FAX: (408) 727-8994
Revision 1/November 14, 2001
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