ICS514 datasheet(1/7 Pages) IDT

Part #	ICS514

Description	PLL CLOCK GENERATOR

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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DATASHEET

LOCO™ PLL CLOCK GENERATOR

ICS514

IDT™ / ICS™ LOCO™ PLL CLOCK GENERATOR

1

ICS514

REV G 051310

Description

The ICS514 LOCOTM is the most cost effective way to

generate a high-quality, high-frequency clock output

from a 14.31818 MHz 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, inexpensive crystal to

produce output clocks up to 66.66 MHz.

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

different output frequencies, allowing one chip to work

in different speed processor systems.

The device also has a power-down mode that turns off

the clock outputs when both select pins are low. In this

mode, the internal PLL is not running.

Features

• Packaged as 8-pin SOIC or die

• Pb (lead) free package

• IDT’s lowest cost PLL clock plus reference

• Produces common computer frequencies

• Input crystal frequency typically 14.3182 MHz

• Output clock frequencies up to 66.66 MHz from a

14.3182 MHz crystal or input clock

• Low jitter of 50 ps (one sigma)

• Compatible with all popular CPUs

• Duty cycle of 45/55

• Custom frequencies available

• Operating voltage of 3.3 V to 5.5 V

• Power-down mode turns off chip

• 25 mA drive capability at TTL levels

• Advanced, low-power CMOS process

Block Diagram

CLK

PLL Clock

Synthesis

and Control

Circuitry

14.31818 MHz crystal

or clock input

GND

VDD

Crystal

Oscillator

S1:0

X1/ICLK

X2

Optional crystal capacitors

2

REF

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