DESCRIPTION The M5450 and M5451 are monolithic MOS integrated circuits produced with an N-channel silicon gate technology. They are available in 40-pin dual in-line plastic packages. A single pin controls the LED display brightness by setting a reference current through a variable resistor connected to VDDor to a separate supply of 13.2V maximum. FEATURES SUMMARY ■ M5450 34 OUTPUTS/15mA SINK ■ M5451 35 OUTPUTS/15mA SINK ■ CURRENT GENERATOR OUTPUTS (NO EXTERNAL RESISTORS REQUIRED) ■ CONTINUOUS BRIGHTNESS CONTROL ■ SERIAL DATA INPUT ■ ENABLE (ON M5450) ■ WIDE SUPPLY VOLTAGE OPERATION ■ TTL COMPATIBILITY Application Examples: ■ MICROPROCESSOR DISPLAYS ■ INDUSTRIAL CONTROL INDICATOR ■ RELAY DRIVER ■ INSTRUMENTATION READOUTS |