The 74HC138N is a 3 to 8-line
decoder/demultiplexer with three enable inputs, E1, E2 and E3..
A High on E1 or E2, or Low on E3 forces the output into the High
state. The demultiplexing function is performed by using the
three input lines, A0 to A2, to select the output lines Y0 to
In many ways, this IC is a smaller version of CD74HC154EN