501GLFT datasheet(1/9 Pages) IDT

Part #	501GLFT

Description	LOCO PLL CLOCK MULTIPLIER Zero ppm multiplication error

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Manufacturer	IDT [Integrated Device Technology]

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DATASHEET

LOCO™ PLL CLOCK MULTIPLIER

ICS501

IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER

1

ICS501

REV R 051310

Description

The ICS501 LOCOTM is the most cost effective way to

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

• Packaged as 8-pin SOIC, MSOP, or die

• RoHS 5 (green) or RoHS 6 (green and lead free)

compliant packaging

• IDT’s lowest cost PLL clock

• Zero ppm multiplication error

• Input crystal frequency of 5 - 27 MHz

• Input clock frequency of 2 - 50 MHz

• Output clock frequencies up to 160 MHz

• Extremely low jitter of 25 ps (one sigma)

• Compatible with all popular CPUs

• Duty cycle of 45/55 up to 160 MHz

• Nine selectable frequencies

• Operating voltage of 3.3 V or 5.0 V

• Tri-state output for board level testing

• 25 mA drive capability at TTL levels

• Ideal for oscillator replacement

• Industrial temperature version available

• Advanced, low-power CMOS process

Block Diagram

CLK

PLL Clock

M ultiplier

Circuitry

and ROM

Crystal or

Clock input

GND

OE

VDD

Crystal

O scillator

S1:0

X1/ICLK

X2

O ptional crystal capacitors

2

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