ICS615

Set-Top Box Clock Source

MDS 615 A

1

Revision 052098

Printed 11/15/00

Integrated Circuit Systems, Inc.•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com

PRELIMINARY INFORMATION

I C R O

Block Diagram

Description

Features

The ICS615 is a low cost, low jitter, high

performance PLL clock synthesizer designed to

replace 13.5, 27, and 54MHz crystals and

oscillators. Using analog/digital Phase-Locked

Loop (PLL) techniques, the device uses an

inexpensive external 13.5 MHz crystal or clock

input to produce output clocks of 13.5 MHz,

27 MHz, and 54 MHz .

ICS/MicroClock manufactures the largest variety

of Set-Top Box and multimedia clock synthesizers

for all applications. Our patented integrated

VCXO further reduces component count and cost

(see the MK2720). If more than three clock

outputs are needed, see the MK277x family of

parts. Consult ICS/MicroClock to eliminate

VCXOs, PLLs, crystals and oscillators from your

board.

• Packaged in 8 pin narrow SOIC

• Output clocks of 54, 27, and 13.5MHz

• Uses a 13.500 MHz clock or external crystal

• Full CMOS outputs with 25mA output drive

capability at TTL levels

• Low skew outputs

• Advanced, low power, sub-micron CMOS process

• +3.3V or +5V operating voltage

• See the MK2720 for these frequencies plus the

VCXO function, in an 8 pin SOIC.

Input

Buffer/

Crystal

Oscillator

PLL/Clock

Synthesis

Circuitry

13.5 MHz

Clock or

Crystal

X1

X2

Output

Buffer

54 MHz Clock

Output

Buffer

13.5 MHz Clock

Output

Buffer

27 MHz Clock

VDD GND