7447 Datasheet – BCD to 7-Segment Decoder/Driver – Fairchild

Part Number: 7447, DM7447A


BCD to 7-Segment Decoders/Drivers

Manufacturer: Fairchild Semiconductor

General Description

The DM7446A and DM7447A feature active-LOW outputs designed for driving common-anode LEDs or incandescent indicators directly. All of the circuits have full ripple-blanking input/output controls and a lamp test input. Segment identification and resultant displays are shown on a following page. Display patterns for BCD input counts above nine are unique symbols to authenticate input conditions.




1. All circuit types feature lamp intensity modulation capability
2. Open-collector outputs drive indicators directly
3. Lamp-test provision
4. Leading/trailing zero suppression


7447 Datasheet

7447 pdf