IC 7447 (BCD to seven segment decoder/driver IC)
BD 1.600
General Description
7447 IC accepts a binary coded decimal as input and converts it into a pattern to drive a seven-segment for displaying digits 0 to 9. Binary coded decimal (BCD) is an encoding method in which each digit of a number is represented by its own binary sequence (usually of four bits). It accepts four lines of BCD (8421) input data and generates their complements internally. The data is decoded with seven AND/OR gates to drive indicator LEDs of the seven segment display directly. The outputs correspond to common anode (CA) configuration of seven segment. The pin out diagram and the pin description for IC7447 are shown below.
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Product Details
Features
Single BCD to 7-Segment Decoder with Open Collector Output
Outputs Directly Interface to CMOS, NMOS and TTL
Large Operating Voltage Range
Wide Operating Conditions
Not Recommended for New Designs Use 74LS47