TLF6137

February 1995

MM5452MM5453 Liquid Crystal Display Drivers

General Description

The MM5452 is a monolithic integrated circuit utilizing

CMOS metal gate low threshold enhancement mode devic-

es It is available in a 40-pin molded package The chip can

drive up to 32 segments of LCD and can be paralleled to

increase this number The chip is capable of driving a 4

-

digit 7-segment display with minimal interface between the

display and the data source

The MM5452 stores display data in latches after it is

clocked in and holds the data until new display data is re-

ceived

Features

Y

Serial data input

Y

No load signal required

Y

DATA ENABLE (MM5452)

Y

Wide power supply operation

Y

TTL compatibility

Y

32 or 33 outputs

Y

Alphanumeric and bar graph capability

Y

Cascaded operation capability

Applications

Y

Y

Industrial control indicator

Y

Digital clock thermometer counter voltmeter

Y

Instrumentation readouts

Y

Remote displays

Block Diagram

TLF6137 – 1

FIGURE 1

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A