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MM5450/51
LED Display Driver
Features
• Continuous Brightness Control • Serial Data Input • No Load Signal Requirement • Enable (MM5450 Only) • Wide Power Supply Operation • TTL Compatibility • 34 or 35 Outputs, 15 mA Capability • Alphanumeric Capability
Applications
• Industrial Control Indicator • Relay Driver • Digital Clock, Thermometer, Counter, Voltmeter • Instrumentation Readouts
General Description
The MM5450 and MM5451 LED display drivers are monolithic MOS IC’s fabricated in an N-Channel, metal-gate process. The technology produces low-threshold, enhancement-mode, and ion-implanted depletion-mode devices.
A single pin controls the LED display brightness by setting a reference current through a variable resistor connected to the supply.