ICS8543 Datasheet, PDF (1/7 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-4 LVDS FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8543
LOW SKEW, 1-TO-4
LVDS FANOUT BUFFER
GENERAL DESCRIPTION
The ICS8543 is a low skew, high performance
,&6
1-to-4 clock fanout buffer and a member of
HiPerClockS™ _{the HiPerClockS™ family of High Performance}
Clock Solutions from ICS. Utilizing Low Voltage
Differential Signaling (LVDS) the ICS8543
provides a low power, low noise, solution for distributing clock
signals over controlled impedances of 100Ω. The ICS8543
accepts any differential input level and translates it to 3.3V
LVDS output levels.
Guaranteed output and part-to-part skew characteristics
make the ICS8543 ideal for those applications demanding
well defined performance and repeatability.
FEATURES
• 4 LVDS outputs
• Designed to meet or exceed the requirements of ANSI
TIA/EIA-644
• Selectable differential HSTL or LVPECL clock inputs
• LVCMOS / LVTTL control inputs
• 3.3V operating supply
• 20 lead TSSOP
• 0°C to 70°C ambient operating temperature
BLOCK DIAGRAM
CLK_EN
HCLK
nHCLK
0
PCLK
1
nPCLK
CLK_SEL
nD
Q
LE
OE
PIN ASSIGNMENT
VEE ^{1 20} Q0
CLK_EN 2 19 nQ0
CLK_SEL ^{3 18} VDD
HCLK 4 ¹⁷ Q1
Q0
nHCLK 5 16 nQ1
nQ0
PCLK ^{6 15} Q2
nPCLK 7 ¹⁴ nQ2
Q1
OE 8 13 VEE
nQ1
VEE ^{9 12} Q3
Q2
VDD 10 ¹¹ nQ3
nQ2
ICS8543
Q3
nQ3
20-Lead TSSOP
G 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.
ICS8543BG
www.icst.com/products/hiperclocks.html
REV. C MAY 21, 2001
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