The 7447 ic is used to drive common anode 7 segment displays. You can directly
connect the 7 segment displays to 7447, which has open collector outputs.
LOW Level Output Current (“a” through “g”) 40 mA (max)
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When data in BCD format sent from the A-B-C-D input ports of the 7447 ic, is sent to the 7-segment display through the a-b-c-d-e-f-g output ports.
In the picture below, you can examine the circuit diagram created with 7490 IC. It can work by connecting directly to 74LS47.
7447 and 7490 work with 5V
Other Articles
- When clock pulse is applied to 7490 (Pin 14), it starts counting upwards. The count between 0-9 (decimal) is applied to the A-B-C-D inputs of the 74LS47
