7447 IC – BCD to seven segment decoder driver

50.00

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7447 (74LS47) is a BCD to 7-segment decoder/driver IC. It 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 in which each digit of a number is represented by its own binary sequence.

Description

7447-seven segment decoder driver IC

7447 (74LS47) is a BCD to 7-segment decoder/driver IC. It 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 in which each digit of a number is represented by its own binary sequence.

 

74LS47 IC 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 segments directly. The outputs correspond to Common anode (CA) configuration of seven segments.

7447-seven segment decoder driver IC

7447 Features

  • All circuit types feature lamp intensity modulation capability
  • Open-collector outputs drive indicators directly
  • Lamp-test provision
  • Leading/trailing zero suppression

Pin Diagram

PIN Description

Pin NoFunctionName
1BCD Input 2A1
2BCD Input 3A2
3Display test; Active lowLT
4Ripple blanking output; Active lowRBO
5Ripple blanking input; Active lowRBI
6BCD Input 4A3
7BCD Input 1A0
8Ground (0V)Ground
9Segment outputs; Active lowe
10d
11c
12b
13a
14g
15f
16Supply voltage; 5V (4.75V – 5.25V)Vcc

 

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