MK2712

NTSC/PAL Clock Source

MDS 2712 C

1

Revision 061401

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

The MK2712 is the ideal way to generate clocks for

NTSC/PAL video encoders and decoders. Stored in

the device are two sets of popular frequencies for

NTSC and PAL. In an 8 pin SOIC, the chip can save

component count, board space, and cost over surface

mount crystals and oscillators, and increase reliability

by eliminating one or two mechanical devices from the

board. The power down pin turns off the device,

drawing less than 20µA.

ICS/MicroClock offers many other clocks for computers

and computer peripherals. Consult us when you need

to remove crystals and oscillators from your board.

Block Diagram

Description

Features

• Packaged in 8 pin SOIC

• Ideal for chips such as Analog Devices AD722

and Brooktree BT819

• Input clock frequency of 27.0000 MHz

• Power down turns off chip

• Output enable tri-states output for system testing

• Frequencies are within 1 ppm with accurate

input clock

• Low jitter

• Output clock frequencies of 14.31818MHz,

17.7345MHz, 28.6364MHz, or 35.46896MHz

• 25mA drive capability at TTL levels

• 3.3V or 5V supply voltage

• Advanced, low power CMOS process

• Insensitive to input clock duty cycle

VDD

GND

PLL

Clock Synthesis

Circuitry

27.00 MHz

clock input

Output

Buffer

NTSC/PALCL

OCK

FS0, 1

2

PD

OE