General Description

The MM5480 is a monolithic MOS integrated circuit utilizing

N-channel metal gate low threshold, enhancement mode

and ion-implanted depletion mode devices. It utilizes the

MM5451 die packaged in a 28-pin package making it ideal

for a 3(/2 digit display. The MM5480 is designed to drive

common anode-separate cathode LED displays. A single

pin controls the LED display brightness by setting a reference current through a variable resistor connected either to

VDD or to a separate supply of 11V maximum.

Features

Y Continuous brightness control

Y Serial data input

Y No load signal required

Y Wide power supply operation

Y TTL compatibility

Y Alphanumeric capability

Y 3(/2 digit displays

Applications

Y COPSTM microcontrollers or microprocessor displays

Y Industrial control indicator

Y Relay driver

Y Digital clock, thermometer, counter, voltmeter

Y Instrumentation readouts