Decoders/Demultiplexers

74LS139D Decoder/Demultiplexer

74LS139D is a 2 to 4 decoder/demultiplexer with low driven outputs. 

The active LOW Enable ~G input can be used as data input line in demultiplexing applications. The circuit can also be used as a function generator, providing all four minterms of four variables.

Function table

Inputs			Outputs
Enable ~G	SELECT
	B	A	Y0	Y1	Y2	Y3
H	X	X	H	H	H	H
L	L	L	L	H	H	H
L	L	H	H	L	H	H
L	H	L	H	H	L	H
L	H	H	H	H	H	L

 

        H = HIGH Level

        L = LOW Level

        X = Don't Care