General Description

The MM74C911 display controller is an interface element with memory that drives a 4-digit, 8-segment LED display. The MM74C911 allows individual control of any segment in the 4-digit display. The number of segments per digit can be expanded without any external components. For example, two MM74C911’s can be cascaded to drive a 16-segment alpha-numeric display

Features

■ Direct segment drive (100 mA typ.) 3-STATE

■ 4 registers addressed like RAM

■ Internal oscillator and scanning circuit

■ Direct base drive to digit transistor

■ Segment expandability without external components

■ TTL compatible inputs

■ Power saver mode—5 µW (typ.)