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IC number for different combinational circuits
IC no
Description
IC7483
It's acting as nibble adder-subtracter
IC74150
It's acting as 16:1 multiplexer
IC74151
It's acting as 8:1 multiplexer
IC74152
It's acting as 8:1 multiplexer as inverted output
IC74154
It's acting as 1:16 demultiplexer or 4 line to 16 line decoder

Encoders

IC no
Description
IC74138
3 line to 8 line decoder, 1:8 demultiplexer
IC74148
Octal to binary priority encoder
IC74147
Decimal to BCD priority encoder
IC7447
Common anode type BCD to SSDecoder
IC7448
Common cathode type BCD to SSDecoder
IC74153
Dual 4:1 multiplexer