Difference between Multiplexer and Demultiplexer

1. Multiplexer :
Multiplexer is a data selector which takes several inputs and gives a single output.In multiplexer we have 2ⁿ input lines and 1 output lines where n is the number of selection lines.

2. Demultiplexer :
Demultiplexer is a data distributor which takes a single input and gives several outputs.In demultiplexer we have 1 input and 2ⁿ output lines where n is the selection line.

Difference between of Multiplexer and Demultiplexer :

Multiplexer	Demultiplexer
Multiplexer processes the digital information from various sources into a single source.	Demultiplexer receives digital information from a single source and converts it into several sources
It is known as Data Selector	It is known as Data Distributor
Multiplexer is a digital switch	Demultiplexer is a digital circuit
It follows combinational logic type	It also follows combinational logic type
It has 2n input data lines	It has single input line
It has a single output data line	It has 2n output data lines
It works on many to one operational principle	It works on one to many operational principle
In time division Multiplexing, multiplexer is used at the transmitter end	In time division Multiplexing, demultiplexer is used at the receiver end