ICS650-40 데이터 시트보기 (PDF) - Integrated Circuit Systems

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ICS650-40

ETHERNET SWITCH CLOCK SOURCE

Integrated Circuit Systems 

ICS650-40

ETHERNET SWITCH CLOCK SOURCE

Description

The ICS650-40 is a clock chip designed for use in

Ethernet Switch applications. Using ICS’ 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.

Features

• Packaged in 16-pin TSSOP

• Available in Pb (lead) free package

• Operating voltage of 3.3 V

• Low power consumption

• Input frequency of 25 MHz

• Low long-term jitter

• 2.5 V to 3.3 V clock outputs

Block Diagram

VDD

3

VDDOA

S1:S0

2

Control

Logic

Phase Lock Loop

X1/ICLK

25 MHz

crystal or clock X2

Clock

Buffer/

Crystal

Oscillator

Optional tuning crystal

capacitors

4

GND OE

VDDOB

CLKA

CLKB

MDS 650-40 C

1

Revision 060705

Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com

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