ICS85311AM
www.icst.com/products/hiperclocks.html
REV. A
SEPTEMBER 23, 2002
1
Integrated
Circuit
Systems, Inc.
ICS85311
L
OW
S
KEW
, 1-
TO
-2
D
IFFERENTIAL
-
TO
-2.5V/3.3V ECL/LVPECL F
ANOUT
B
UFFER
G
ENERAL
D
ESCRIPTION
The ICS85311 is a low skew, high perfor-
mance 1-to-2 Differential-to-2.5V/3.3V ECL/
LVPECL Fanout Buffer and a member of the
HiPerClockSTM family of High Performance
Clock Solutions from ICS. The CLK, nCLK pair
can accept most standard differential input levels.T h e
ICS85311 is characterized to operate from either a 2.5V
or a 3.3V power supply. Guaranteed output and part-
to-part skew characteristics make the ICS85311 ideal
for those clock distribution applications demanding well
defined performance and repeatability.
F
EATURES
2 differential 2.5V/3.3V LVPECL / ECL outputs
1 CLK, nCLK input pair
CLK, nCLK pair can accept the following differential
input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
Maximum output frequency: 1GHz
Translates any single ended input signal to 3.3V
LVPECL levels with resistor bias on nCLK input
Output skew: 15ps (maximum)
Part-to-part skew: 100ps (maximum)
Propagation delay: 1.4ns (maximum)
LVPECL mode operating voltage supply range:
V
CC
= 2.375V to 3.465V, V
EE
= 0V
ECL mode operating voltage supply range:
V
CC
= 0V, V
EE
= -2.375V to -3.465V
0C to 70C ambient operating temperature
Industrial temperature information available upon request
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
ICS85311
8-Lead SOIC
3.90mm x 4.90mm x 1.37mm package body
M Package
Top View
Q0
nQ0
Q1
nQ1
1
2
3
4
HiPerClockSTM
,&6
Vcc
CLK
nCLK
V
EE
8
7
6
5
Q0
nQ0
Q1
nQ1
CLK
nCLK
ICS85311AM
www.icst.com/products/hiperclocks.html
REV. A
SEPTEMBER 23, 2002
3
Integrated
Circuit
Systems, Inc.
ICS85311
L
OW
S
KEW
, 1-
TO
-2
D
IFFERENTIAL
-
TO
-2.5V/3.3V ECL/LVPECL F
ANOUT
B
UFFER
T
ABLE
3A. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
CC
= 3.3V5%, T
A
= 0C
TO
70C
A
BSOLUTE
M
AXIMUM
R
ATINGS
Supply Voltage, V
CC
4.6V
Inputs, V
I
-0.5V to V
CC
+ 0.5V
Outputs, V
O
-0.5V to V
CC
+ 0.5V
Package Thermal Impedance,
JA
112C/W
Storage Temperature, T
STG
-65C to 150C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings
are stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in
the
DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect product reliability.
T
ABLE
3B. D
IFFERENTIAL
DC C
HARACTERISTICS
,
V
CC
= 3.3V5%, T
A
= 0C
TO
70C
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