DM5448

Display Drivers DM5446A/DM7446A DM5447A/DM7447A DM5448/DM7448 BCD-to-7-segment decoder/drivers general description This versatile series of 7-segment display drivers fulfills a wide variety of requirements for most active high (common cathode) and active low (common anode) Light Emitting Diodes (LED) or lamp displays. Each device fully decodes a 4-bit BCD input into a number from 0 through 9 in the standard 7-segment display format, and BCD numbers above 9 Into unique patterns that verify operation. All circuits operate from a single 5.0V supply. The DM5446A/DM7446A has active-low, opencollector outputs that will drive segments requiring up to 40 mA of current. The outputs are capable of withstanding 30V at a maximum leakage current of 2501lA. This configuration is particularly well suited for common anode LED displays or higher voltage lamp displays. The high sink current capability also allows this circuit to be used in the multiplex or nonmultiplex mode of display drive. In additi...