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544M-01

Description
Clock Divider
File Size96KB,7 Pages
ManufacturerICS ( IDT )
Websitehttp://www.icst.com
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544M-01 Overview

Clock Divider

P R E L I M I N A RY I N F O R M AT I O N
ICS544-01
Clock Divider
Description
The ICS544-01 is crystal oscillator module IC with
divide by 512 frequency output. It employs a 16.777216
MHz fundamental frequency crystal source oscillator to
generate 32.768 kHz output crystal oscillator output. In
addition a divide by 256, 64 and 32 options also
provided through select pins. The chip has an OE pin
that tri-states the output and stops the oscillator
circuits.
The ICS544-01 is a member of ICS’ ClockBlocks
TM
family of clock building blocks. See the ICS541 and
ICS542 for other clock dividers, and the ICS501, 502,
511, 512, and 525 for clock multipliers.
Features
Packaged in 8-pin SOIC or die
Available in Pb-free package
ICS’ lowest cost clock divider
Easy to use with other generators and buffers
Input clock frequency up to 156 MHz
Output clock duty cycle of 45/55
Output Enable
Advanced, low-power CMOS process
Operating voltage of 2.25 V to 3.6 V
Does not degrade phase noise - no PLL
Available in industrial temperature range
Block Diagram
VDD
S1, S0 (1:0)
Divider and
Selection
Circuitry
/32, /64
/256, /512,
X1/ICLK
16.777216
MHz clock
or crystal
X2
input
Optional tuning
capacitors
CLK1
GND
OE
MDS 544M-01 A
1
Revision 041505
Integrated Circuit Systems, Inc.
525 Race Street, San Jose, CA 95126
tel (408) 297-1201
www.icst.com
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