The MM5450 and MM5451 are monolithic MOS integr circuits utilizing N-channel metal-gate low threshold hancement mode and ion-implanted depletion mode d es They are available in 40-pin molded or cavity dual-in packages The MM5450
MM5451 is designed to drive mon anode-separate cathode LED displays A single controls the LED display brightness by setting a refer current through a variable resistor connected to VDD