Demultiplexer (DEMUX)

Demultiplexer (DEMUX) Definition

A Demultiplexer is a combinational circuit having one input and multiple outputs. A DEMUX consist of only one input, ‘n’ outputs and  ‘m’ numbers of selection inputs. There is an Enable input which is used to enable and disable the De-multiplexer. In simple words, it is the reverse of a Multiplexer.  The relation between n output lines and m selection lines is 2m= n.

In digital electronics, the Demultiplexer (DEMUX) is used where we need multiple outputs from one input.

Applications of Demultiplexer

  • ALU
  • Serial to Parallel converter
  • Communication System

Types of Demux:

  • 1:2
  • 1:4
  • 1:8
  • 1:16 demultiplexer
  • 1:32 demux



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