74LS47 BCD to 7-Segment Decoder Driver

The 74LS47 accepts four lines of BCD input data, generates their complements internally and decodes the data with seven AND/OR gates aving open-collector outputs to drive indicator segments directly. Each segment output is guaranteed to sink 24 mA in the ON (LOW) state and withstand 15V in the OFF (HIGH) state with a maximum leakage current of 250 mA. Auxiliary inputs provided blanking, lamp test and cascadable zero-suppression functions.

Features:

• Open-collector outputs.
• Drive indicator segments directly.
• Cascadable zero-suppression capability.
• Lamp test input.