NATIONAL SEMICONDUCTOR MM5452 MM5453 Liquid Crystal Display Drivers
Summary
These versatile integrated circuits are dedicated Liquid Crystal Display Drivers designed for reliable segment and 7-segment display control. They handle complex data throughput, managing up to 32 segments or multiple cascaded digits with minimal interface requirements. The accompanying manual provides comprehensive specifications, electrical characteristics, connection diagrams, and operational guidelines. This makes the product ideal for professionals building digital instruments such as industrial control indicators, clocks, thermometers, and custom metering systems.
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December
5452/M Liquid rystal D isplay rivers
MM5452/MM5453 Liquid Crystal Display Drivers
DATA ENABLE (MM5452)
General Description
Wide power supply operation
The MM5452 is monolithic integrated circuit utilizing
TTL compatibility
CMOS metal gate, low threshold enhancement mode de-
or outputs
vices. It is available in 40-pin molded package. The chip
Alphanumeric and bar graph capability
can drive up to segments of LCD and can be paralleled to
increase this number. The chip is capable of driving Cascaded operation capability
41⁄2-digit 7-segment display with minimal interface between the display and the data source. Applications The MM5452 stores display data in latches after it is clocked COPS™ or microprocessor displays in, and holds the data until new display data is received.
Industrial control indicator Digital clock, thermometer, counter, voltmeter
Features
Instrumentation readouts
Serial data input Remote displays No load signal required
Block Diagram
FIGURE 1.
National Semiconductor Corporation DS006137 www.national.com
Page Summary Contents For NATIONAL SEMICONDUCTOR MM5452 MM5453 Liquid Crystal Display Drivers
Manual Details
| Brand | National |
|---|---|
| Pages | 9 |
| File Size | 312.56 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What types of displays can the MM5452 drive?
It can handle alphanumeric, bar graph, and 7-segment displays, driving up to 32 segments.
How must data be transferred into the chip?
Data is transferred serially using a start bit of logical '1' followed by 32 bits of data.
What are the operating voltage limitations for the MM5452?
The recommended operating voltage range at any pin reference is -0.3V to +10V.
Are there usage restrictions regarding life support systems?
No, it cannot be used as a critical component in life support devices without written approval.