September 2006

PCS1P2857A/B

rev 0.1

Notice: The information in this document is subject to change without notice.

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200, Campbell, CA 95008

• Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

Multi-Output Clock Generator

Features

• Generates multiple clock outputs from an inexpensive

27MHz crystal .

• Frequency outputs: PCS1P2857A

•

CLK1 : 27 MHz

•

CLK2 : 24 MHz

•

CLK3 : 14.31818 MHz

•

CLK4 : 14.31818 MHz

• Frequency outputs: PCS1P2857B

•

CLK1 : 27 MHz

•

CLK2 : 24 MHz

•

CLK3 : 28.322 MHz

• Operates with a 3.3V ± 5%V Supply Voltage

• Available in 8 -pin SOIC and 8 -pin TSSOP.

Product Description

The PCS1P2857A/B is a versatile multi output clock

generator. The PCS1P2857A/B uses the latest PLL

technology. The four Clock outputs are generated using

an inexpensive 27MHz Crystal. The accuracy of the

27MHz Input Clock should be within ±50ppm. The

outputs consist of 24 MHz, 14.31818 MHz, and 28.322

MHz clocks together with a 27 MHz reference clock. The

device operates from a Supply Voltage of 3.3V±5%V.

The device is available in a 8 pin SOIC and 8 pin TSSOP

JEDEC package.

Application

PCS1P2854A/B is targeted for use in HDTV digital video.

Block Diagram

VDD

GND

CLK2

CLK3

CLK4

CLK1

Crystal

Oscillator

XIN

XOUT

PLL