ICS853031 Datasheet, PDF (1/19 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-9 DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS853031
LOW SKEW, 1-TO-9
DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER
GENERAL DESCRIPTION
FEATURES
ICS
HiPerClockS™
The ICS853031 is a low skew, high performance
1-to-9 Differential-to-2.5V/3.3V LVPECL/ECL
Fanout Buffer and a member of the HiPerClockS™
• 9 differential 2.5V/3.3V LVPECL/ECL outputs
• Selectable differential CLK, nCLK or LVPECL clock inputs
family of High Performance Clock Solutions from • CLK, nCLK pair can accept the following differential
ICS. The ICS853031 has two selectable clock in- input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL,
puts. The CLK, nCLK pair can accept most standard differential
input levels. The PCLK, nPCLK pair can accept LVPECL, LVDS,
CML, or SSTL input levels. The clock enable is internally syn-
• PCLK, nPCLK supports the following input types:
LVPECL, LVDS, CML, SSTL
chronized to eliminate runt pulses on the outputs during asyn- • Output frequency: 1.6GHz (typical)
chronous assertion/deassertion of the clock enable pin.
• Translates any single ended input signal (LVCMOS, LVTTL,
Guaranteed output skew and part-to-part skew characteristics GTL) to 3.3V LVPECL levels with resistor bias on nCLK or
make the ICS853031 ideal for high performance workstation nPCLK inputs
and server applications.
• Output skew: 20ps (typical)
• Part-to-part skew: 75ps (typical)
• Propagation delay: 875ps (typical)
• LVPECL mode operating voltage supply range:
V_CC = 2.375V to 3.465V, V_EE = 0V
• ECL mode operating voltage supply range:
V = 0V, V = -2.375V to -3.465V
CC
EE
• -40°C to 85°C ambient operating temperature
• Lead-Free package available
• Pin compatible with ICS8531-01
BLOCK DIAGRAM
PIN ASSIGNMENT
CLK_EN
CLK
nCLK
0
PCLK
nPCLK
1
CLK_SEL
D
Q
LE
32 31 30 29 28 27 26 25
Q0
nQ0
VCC 1
CLK 2
2 4 VCCO
23 Q3
Q1
nCLK 3
22 nQ3
nQ1
CLK_SEL 4
PCLK 5
ICS853031
21 Q4
20 nQ4
Q2
nQ2
nPCLK 6
19 Q5
Q3
nQ3
VEE
CLK_EN
7
18
8
17
9 10 11 12 13 14 15 16
nQ5
VCCO
Q4
nQ4
Q5
nQ5
32-Lead LQFP
Q6
7mm x 7mm x 1.4mm package body
nQ6
Y package
Top View
Q7
nQ7
Q8
nQ8
853031AY
www.icst.com/products/hiperclocks.html
1
REV. B SEPTEMBER 16, 2004