M5451

M5450 M5451 LED DISPLAY DRIVERS FEATURES SUMMARY Figure 1. Packages ■ M5450 34 OUTPUTS/15mA SINK ■ M5451 35 OUTPUTS/15mA SINK ■ CURRENT GENERATOR OUTPUTS (NO EXTERNAL RESISTORS REQUIRED) ■ CONTINUOUS BRIGHTNESS CONTROL 40 ■ SERIAL DATA INPUT ■ ENABLE (ON M5450) t(s)■ WIDE SUPPLY VOLTAGE OPERATION ■ TTL COMPATIBILITY ducApplication Examples: ro■ MICROPROCESSOR DISPLAYS P■ INDUSTRIAL CONTROL INDICATOR te■ RELAY DRIVER le■ INSTRUMENTATION READOUTS ObsoDESCRIPTION -The M5450 and M5451 are monolithic MOS intet(s)grated circuits produced with an N-channel silicon gate technology. They are available in 40-pin dual cin-line plastic packages. uA single pin controls the LED display brightness by dsetting a reference current through a variable rerosistor connected to VDD or to a separate supply of Obsolete P13.2V maximum. 1 PDIP40 (Plastic Package) PLCC44 (Plastic Chip Carrier) April 2004 REV. 2 1/12 M5450, M5451 Figure 2. Pin Connection OUTPUT BIT 14 OUTPUT...