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548G-05

T1/E1 CLOCK MULTIPLIER

Integrated Device Technology 

T1/E1 CLOCK MULTIPLIER

DATASHEET

ICS548-05

Description

The ICS548-05 is a low-cost, low-jitter,

high-performace clock synthesizer designed to

produce x16 and x24 clocks from T1 and E1

frequencies. Using IDT’s patented analog/digital

Phase- Locked Loop (PLL) techniques, the device uses

a crystal or clock input to synthesize popular

communications frequencies. Power down modes allow

the chip to turn off completely, or the PLL and clock

output to be turned off separately.

IDT manuafactures the largest variety of

communications clock synthesizers for all applications.

Consult IDT to eliminate VCXO’s, crystals, and

oscillators from your board.

Features

• Packaged in 16-pin TSSOP

• Available in Pb (lead) free package

• Ideal for telecom/datacom chips

• Replaces oscillators

• 3.3 V or 5 V operation

• Uses a crystal or clock input

• Produces 24.704, 37.056, 32.768, or 49.152 MHz

• Includes Power-down features

• Advanced, low-power, sub-micron CMOS process

• See also the MK2049-34 for generating

• Industrial temperature range available

Block Diagram

MSEL

REFEN

PDCLK

1.544 MHz or

2.048 MHz

clock or crystal

input

X1/ICLK

X2

Input

Buffer/

Crystal

Oscillator

Optional crystal

capacitors

X16 or x24

PLL/Clock

Synthesis

Circuitry

CLK

REFOUT

IDT® T1/E1 CLOCK MULTIPLIER

1

ICS548-05 REV D 091511

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