Multiplexer and Demultiplexer

 What is a Multiplexer? 

The Multiplexer is some kind of electronic circuit that behaves as multiple inputs and single output switch, as well is known as a data selector. Multiposition switches are mostly used in many electronics circuits. The high-speed operated circuits require the multiplexer to be automatically selected. A mechanical one cannot perform this task properly. So, this multiplexer is used to perform high-speed switching in the behavior of electric circuits. The Multiplexer is called MUX and it has,

• 2n input lines
• n select lines
• one output line

Types of Multiplexers

• 2 to 1 Multiplexer
• 4 to 1 Multiplexer
• 8 to 1 Multiplexer

Multiplexer External View

                

Multiplexer Symbolic View

                  

2 to 1 Multiplexer

                     

Truth Table for 2 to 1 Multiplexer

                   

Logic Circuit Diagram for 2 to 1 Multiplexer

                   

                   

What is a Demultiplexer? 

The Demultiplexer is some kind of electronic circuit that behaves as a single input and multiple outputs switch, as well is known as a data distributor. The Demultiplexer called as DEMUX and it has,

• 2n output lines
• n select lines
• one input line

Types of Multiplexer

• 1 to 2 Demultiplexer
• 1 to 4 Demultiplexer
• 1 to 8 Demultiplexer

Demultiplexer External View

            

Demultiplexer Symbolic View

                  

1 to 2 Demultiplexer

                       

Truth Table for 1 to 2 Demultiplexer

                    

Logic Circuit Diagram for 1 to 2 Demultiplexer