DATASHEET

LOCO™ PLL CLOCK MULTIPLIER

I CS5 0 1

IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER

1

ICS501

REV S 20170331

Description

generate a high-quality, high-frequency clock output from a

lower frequency crystal or clock input. The name LOCO

stands for Low Cost Oscillator, as it is designed to replace

crystal oscillators in most electronic systems. Using

Phase-Locked Loop (PLL) techniques, the device uses a

standard fundamental mode, inexpensive crystal to

produce output clocks up to 160 MHz.

Stored in the chip’s ROM is the ability to generate nine

different multiplication factors, allowing one chip to output

many common frequencies (see table on page 2).

The device also has an output enable pin which tri-states

the clock output when the OE pin is taken low.

This product is intended for clock generation. It has low

output jitter (variation in the output period), but input to

output skew and jitter are not defined or guaranteed. For

applications which require defined input to output skew, use

the ICS570B.

Features

compliant packaging

Block Diagram

CLK

PLL Clock

M ultiplier

Circuitry

and ROM

Crystal or

Clock input

GND

OE

VDD

Crystal

Oscillator

S1:0

X1/ICLK

X2

Optional crystal capacitors

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