ICS448-16 datasheet(1/7 Pages) ICST

номер детали	ICS448-16

подробное описание детали	Networking Clock Synthesizer

PDF	7 Pages

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производитель	ICST [Integrated Circuit Systems]

домашняя страница	http://www.icst.com

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ICS448-16

MDS 448-16 E

1

Revision 031605

Integrat ed Circuit Systems ● 5 25 Race Stre et, San Jo se, CA 9 5126 ● te l (40 8 ) 2 97-12 01 ● www.ics t.co m

Networking Clock Synthesizer

Description

The ICS448-16 generates four high-quality,

high-frequency clock outputs. It is designed to replace

multiple crystals and crystal oscillators in networking

applications. Using ICS’ patented Phase-Locked Loop

(PLL) techniques, the device runs from a 25 MHz

crystal or clock input.

Features

• Packaged in 16-pin TSSOP

• Replaces multiple crystals and oscillators

• Input crystal or clock frequency of 25 MHz

• Zero ppm frequency synthesis error

• Fixed output frequencies of 25 MHz and 48 MHz

• Selectable output frequencies of 24 MHz, 48 MHz,

50 MHz and 66.6666 MHz

• Duty cycle of 45/55

• Operating voltage of 3.3 V

• Advanced, low power CMOS process

Block Diagram

X1

X2

PLL1

Crystal

Oscillator/

Clock

Buffer

25 MHz clock

or crystal input

External capacitors

may be required.

VDD

GND

PDTS (all outputs and PLLs)

3

4

PLL2

CLK2

25M

CLK1

48M

SEL

PLL3

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