The document provides a comprehensive overview of multiplexers (mux) and demultiplexers (dmux), including their definitions, types, and applications. A multiplexer channels multiple inputs into a single output line, while a demultiplexer performs the reverse function by distributing data from one input to several outputs. Both devices are essential in communication systems, computer memory, and other digital circuits, enhancing efficiency and data management.

1. MULTIPLEXER AND
DEMULTIPLEXER

2. TABLE OF
CONTENTS
• Multiplexer (MUX)
• Types Of MUX
• Application Of MUX
• De-multiplexer
(DMUX)
• Types Of Dmux
• Application Of Dmux
• Relation Between
MUX And DMUX

3. MULTIPLEXER (MUX)
 Multiplexer Is Defined As:
“ A Device That Allows Digital Information From Several
Sources To Be Routed Onto A Single Line For Transmission
Over That Line To A Common Destination. ”
 A Mux Is A Digital Switch That Has Multiple Inputs (Sources)
And A Single Output (Destination).
 The Selection Lines Determine Which Input Is Connected To
The Output.
 If There Are n Data Input Lines And m Select Lines, Then

4. TYPES OF MULTIPLEXER
Following are the Types of MUX:
 2-1 Multiplexer ( 1 Select Line )
 4-1 Multiplexer ( 2 Select Line )
 8-1 Multiplexer ( 3 Select Line )
 16-1 Multiplexer ( 4 Select Line )

5. 2x1 MULTIPLEXER

6. 4x1 MULTIPLEXER

7. 8x1 MULTIPLEXER

8. APPLICATION OF MUX
Communication System:
 A Communication System Has A Great Impact By
Multiplexer.
 By Using A Multiplexer, The Efficiency Can Be
Increased.
Computer Memory:
 Multiplexers Are Used In Computer Memory.
 Reduces Copper Lines To Connect The Memory
To Other Parts Of The Computer.

9. APPLICATION OF MUX
Telephone network:
 In Telephone Networks, Multiple Audio
Signals Are Integrated.
Transmission From The
Computer Of A Satellite :
 Multiplexer Is Used To Transmit The Data
Signals.
 From Satellite To Ground.
 By Using GSM Satellite.

10. DE-MULTIPLEXER (DMUX)
 De-multiplexer Means One To Many.
 A Demultiplexer (DMUX) Basically Reverses The
Multiplexing Function.
“ Dmux Takes Data From One Line And Distributes
Them To A Given Number Of Output Lines. ”
 For This Reason, The Demultiplexers Is Also Known
As A Data Distributor.
 A De-multiplexer Is A Circuit With One Input And
Many Output.
 If There Are N Data Output Lines And M Select Lines,
Then

11. TYPES OF DE-MULTIPLEXER
Following are the Types of DMUX:
 1-2 Demultiplexer(1 Select Line)
 1-4 Demultiplexer(2 Select Lines)
 1-8 Demultiplexer(3 Select Lines)
 1-16 Demultiplexer (4 Select Lines)

12. 1x2 DE-MULTIPLEXER

13. 1x4 DE-MULTIPLEXER

14. 1x8 DE-MULTIPLEXER

15. APPLICATION OF DMUX
Communication System :
 DE Multiplexer Receives Signal Outputs From The
Multiplexer.
 At The Receiver End It Converts Them Back To The
Original Form.
Arithmetic Logic Unit (ALU) :
 The Output Of The ALU Is Fed As An Input To The
DE Multiplexer.
 And The Output Of The DE Multiplexer Is
Connected To A Multiple Register.

16. APPLICATION OF DMUX
SERIES TO PARALLEL CONVERTER :
 THIS CONVERTER IS USED TO RECONSTRUCT PARALLEL DATA.
 SERIAL DATA IS GIVEN AS AN INPUT TO THE DE MULTIPLEXER AT A REGULAR
INTERVAL.
 A COUNTER IS ATTACHED TO DETECT THE DATA SIGNAL.

17. RELATION BETWEEN ….
MULTIPLEXER
 Type Of A Combinational
Circuits
 A Circuit That Accept Many
Input But Give Only One
Output.
 Mostly Used With De-
Multiplexer
DE-MULTIPLEXER
 Type Of A Combinational
Circuits
 A Circuit That Accepts Only
One Input And Gives Many
Outputs.
 Reverse Of Multiplexer
 Mostly Used With Multiplexer

18. RELATION BETWEEN ….