TLF6142

February 1995

MM5486 LED Display Driver

General Description

The MM5486 is a monolithic MOS integrated circuit utilizing

N-channel metal-gate low-threshold enhancement mode

and ion-implanted depletion mode devices It is available in

a 40-pin molded dual-in-line package The MM5486 is de-

signed to drive common anode-separate cathode LED dis-

plays A single pin controls the LED display brightness by

setting a reference current through a variable resistor con-

Features

Y

Continuous brightness control

Y

Serial data inputoutut

Y

External load input

Y

Cascaded operation capability

Y

Wide power supply operation

Y

TTL compatibility

Y

33 outputs 15 mA sink capability

Y

Alphanumeric capability

Applications

Y

Y

Industrial control indicator

Y

Relay driver

Y

Digital clock thermometer counter voltmeter

Y

Instrumentation readouts

Block and Connection Diagrams

TLF6142 – 1

FIGURE 1

TLF6142 – 13

Order Number MM5486V

See NS Package Number V44A

Dual-In-Line Package

TLF6142 – 2

Top View

Order Number MM5486N

See NS Package Number N40A

FIGURE 2

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A