Multiplexers

Posted By on September 30, 2014


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Demultiplexers

Multiplexers

Multiplexer is a special type of combinational circuit. There are n-data inputs, one output and m select inputs with 2m = n. It is a digital circuit which selects one of the n data inputs and routes it to the output. The selection of one of the n inputs is done by the selected inputs. Depending on the digital code applied at the selected inputs, one out of n data sources is selected and transmitted to the single output Y. E is called the strobe or enable input which is useful for the cascading. It is generally an active low terminal, that means it will perform the required operation when it is low.

Block diagram

Block Diagram of n:1 Multiplexer

Multiplexers come in multiple variations

  • 2 : 1 multiplexer
  • 4 : 1 multiplexer
  • 16 : 1 multiplexer
  • 32 : 1 multiplexer

Block Diagram

2:1 Multiplexer Block Diagram

Truth Table

2:1 Multiplexer Truth Table

Full Subtractors
Demultiplexers

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Posted by Akash Kurup

Founder and C.E.O, World4Engineers Educationist and Entrepreneur by passion. Orator and blogger by hobby

Website: http://world4engineers.com