ICS85314-01 Datasheet, PDF (1/15 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS85314-01
LOW SKEW, 1-TO-5
DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER
GENERAL DESCRIPTION
The ICS85314-01 is a low skew, high performance
,&6
1-to-5 Differential-to-3.3V LVPECL fanout buffer
HiPerClockS™ _{and a member of the HiPerClockS™ family of}
High Performance Clock Solutions from ICS.
The ICS85314-01 has two selectable clock inputs.
The CLK0, nCLK0 pair can accept most standard differential
input levels. The single-ended CLK1 can accept LVCMOS or
LVTTL input levels. The clock enable is internally synchronized
to eliminate runt clock pulses on the outputs during asynchro-
nous assertion/deassertion of the clock enable pin.
Guaranteed output and part-to-part skew characteristics make
the ICS85314-01 ideal for those applications demanding well
defined performance and repeatability.
FEATURES
• 5 differential 2.5V/3.3V LVPECL outputs
• Selectable differential CLK0, nCLK0 or LVCMOS inputs
• CLK0, nCLK0 pair can accept the following differential
input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
• CLK1 can accept the following input levels:
LVCMOS or LVTTL
• Maximum output frequency: 650MHz
• Translates any single-ended input signal to 3.3V LVPECL
levels with resistor bias on nCLK input
• Output skew: 50ps (maximum)
• Part-to-part skew: 400ps (maximum)
• Propagation delay: CLK0, nCLK0 - 2.1ns (maximum)
CLK1 - 2.1ns (maximum)
• LVPECL mode operating voltage supply range:
V = 2.375V to 3.8V, V = 0V
CC
EE
• -40°C to 85°C ambient operating temperature
• Compatible to part number MC100LVEL14
BLOCK DIAGRAM
nCLK_EN
CLK0
nCLK0
00
CLK1
1¹
CLK_SEL
D
Q
LE
PIN ASSIGNMENT
Q0 1
20 VCC
nQ0 2 19 _{nCLK_EN}
Q1 3
18 _VCC
nQ1 4
17 _nc
Q0
Q2 5
16 _CLK1
nQ0
nQ2 6
15 _CLK0
Q3 7 14 _nCLK0
Q1
nQ3 8 13 _nc
nQ1
Q4 9
12 _{CLK_SEL}
Q2
nQ4 10 11 _VEE
nQ2
ICS85314-01
Q3
20-Lead TSSOP
nQ3
6.5mm x 4.4mm x 0.92mm Package Body
Q4
G Package
nQ4
Top View
ICS85314-01
20-Lead SOIC
7.5mm x 12.8mm x 2.3mm Package Body
M Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
85314AG-01
www.icst.com/products/hiperclocks.html
REV. B JUNE 21, 2002
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