ics650-40a Integrated Device Technology, ics650-40a Datasheet

ics650-40a

Manufacturer Part Number

ics650-40a

Description

Ethernet Switch Clock Source

Manufacturer

Integrated Device Technology

Datasheet

1.ICS650-40A.pdf (7 pages)

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ETHERNET SWITCH CLOCK SOURCE

Description

The ICS650-40A is a clock chip designed for use as a core

clock in Ethernet Switch applications. Using IDT’s patented

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

25 MHz crystal input and produces various output clock

frequencies as listed in Output Select Table.

Block Diagram

IDT™ / ICS™ ETHERNET SWITCH CLOCK SOURCE

crystal or clock

25 MHz

S1:S0

X1/ICLK

Optional tuning crystal

capacitors

Oscillator

Control

Crystal

Buffer/

Logic

Clock

VDD

GND

Phase Lock Loop

Features

•

NOTE: EOL for non-green parts to occur on

5/13/10 per PDN U-09-01

Packaged in 16-pin TSSOP

Operating voltage of 3.3 V

Low power consumption

Input frequency of 25 MHz

Low long-term jitter

Separate supply voltage for clock outputs (2.5 / 3.3 V

clock outputs)

OE control capability

VDDOA

VDDOB

CLKB

CLKA

ICS650-40A

DATASHEET

ICS650-40A

REV D 102709

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