Question

1:4 demultiplexer logic gate​

Answer 1

Answer:

Demultiplexer

A demultiplexer (or demux) is a device that takes a single input line and routes it to one of several digital output lines. A demultiplexer of 2n outputs has n select lines, which are used to select which output line to send the input. A demultiplexer is also called a data distributor.

Demultiplexers can be used to implement general purpose logic. By setting the input to true, the demux behaves as a decoder.

The reverse of the digital demultiplexer is the digital multiplexer

1 to 4 demultiplexer

A 1 to 4 multiplexer uses 2 select lines (S0, S1) to determine which one of the 4 outputs (Y0 - Y3) is routed from the input (D). Its characteristics can be described in the following simplified truth table.

Truth Table

S1 S0 Y3 Y2 Y1 Y0

0 0 0 0 0 D

0 1 0 0 D 0

1 0 0 D 0 0

1 1 D 0 0 0

Explanation: