The MM5452 is a monolithic integrated circuit utilizing CMOS metal gate, low threshold enhancement mode devices. It can drive up to 32 segments of LCD and can be paralleled to increase this number. The chip is capable of driving a 41⁄2-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 received. Features include serial data input, no load signal required, DATA ENABLE (MM5452), wide power supply operation, TTL compatibility, 32 or 33 outputs, alphanumeric and bar graph capability, cascaded operation capability.
The MM5452/MM5453 are monolithic CMOS integrated circuits designed to drive up to 32 LCD segments, with the ability to cascade for more. They accept serial data and clock inputs, require no load signal, and provide TTL‑compatible outputs. The devices are supplied in 40‑pin molded packages (dual‑in‑line or plastic chip carrier) and support both 4‑digit 7‑segment displays and bar‑graph applications.
Key features include a wide supply voltage range (3 V‑10 V), operation over –40 °C to 85 °C, low power dissipation (350 mW at 25 °C), and flexible output configurations (32 or 33 outputs). The datasheet provides absolute maximum ratings, electrical characteristics, functional block diagrams, and mechanical dimensions for designers.
| Supply Voltage (VDD) | 3 V to 10 V |
|---|---|
| Operating Temperature | −40 °C to 85 °C |
| Power Dissipation (25 °C) | 350 mW |
| Segment Sink Current (IOL) | -20 µA to -40 µA |
| Number of Outputs | 32 or 33 |
The device operates with a supply voltage (VDD) from 3 V up to 10 V.
The MM5452 can drive up to 32 LCD segments, and more can be added by paralleling devices.
The recommended operating temperature is from –40 °C to 85 °C.
The device dissipates 350 mW at 25 °C.