Table of Contents

- 1 What is multiplexer explain in detail with relevant logic circuits and truth table?
- 2 What is multiplexer with logic circuit and function table explain the working of 4-to-1 line multiplexer?
- 3 What is combinational logic circuit?
- 4 Which IC works as a demultiplexer?
- 5 How many 1 to 4 Line demux are required to construct a 1 to 64 line Demux?
- 6 Why do we use multiplexer?
- 7 How many input and output lines does a multiplexer have?
- 8 What is the truth table for an 8 to 1 multiplexer?

## What is multiplexer explain in detail with relevant logic circuits and truth table?

Multiplexer is a combinational circuit that has maximum of 2n data inputs, ‘n’ selection lines and single output line. One of these data inputs will be connected to the output based on the values of selection lines. So, each combination will select only one data input. Multiplexer is also called as Mux.

## What is multiplexer with logic circuit and function table explain the working of 4-to-1 line multiplexer?

A 4-to-1 multiplexer consists four data input lines as D0 to D3, two select lines as S0 and S1 and a single output line Y. The select lines S0 and S1 select one of the four input lines to connect the output line.

**Can a multiplexer be used to realize a logic function?**

The main function of a multiplexer is to route only one selected data input to its single output. Because of its unique structure, a multiplexer can also be used to implement a logic function.

**How many input combinations can be there in the truth table of a logic statement having 3 input variables?**

8 possible input combinations

Therefore, a 3-input logic circuit would have 8 possible input combinations or 23 and a 4-input logic circuit would have 16 or 24, and so on as the number of inputs increases.

### What is combinational logic circuit?

Combinational Logic Circuits are memoryless digital logic circuits whose output at any instant in time depends only on the combination of its inputs. Unlike Sequential Logic Circuits whose outputs are dependant on both their present inputs and their previous output state giving them some form of Memory.

### Which IC works as a demultiplexer?

The IC CD4052 is a CMOS based high voltage Multiplexer and Demultiplexer IC. The IC is commonly used in circuit where a 4:1 MUX or a 1:4 DEMUX is required in a Programmable Logic circuit Design. It can handle both analog and digital voltages hence can be used in Analog to Digital and Digital to Analog converters.

**What is the principle used in multiplexers?**

Principles of Communication – Multiplexing. Multiplexing is the process of combining multiple signals into one signal, over a shared medium. The process is called as analog multiplexing if these signals are analog in nature. If digital signals are multiplexed, it is called as digital multiplexing.

**What is multiplexer with example?**

Multiplexer means many into one. A multiplexer is a circuit used to select and route any one of the several input signals to a single output. A simple example of an non-electronic circuit of a multiplexer is a single pole multi-position switch. A mechanical switch cannot perform this task efficiently. …

#### How many 1 to 4 Line demux are required to construct a 1 to 64 line Demux?

of select lines. Therefore, for 1:4 demultiplexer, 2 select lines are required. Explanation: A demultiplexer sends a single input to multiple outputs, depending on the select lines.

#### Why do we use multiplexer?

A multiplexer is a device that allows digital information from several sources to be routed onto a single line for transmission to a single destination. A demultiplexer does the reverse operation of multiplexing. It takes digital information from a single line and distributes it to a given number of output lines.

**What is 3 input AND gate?**

A three-input gate has eight possibilities (000, 001, 010, 011, 100, 101, 110, and 111) for input states. The number of possible input states is equal to two to the power of the number of inputs: This increase in the number of possible input states obviously allows for more complex gate behavior.

**How many input combinations are there?**

This number grows exponentially at 2n, where n is the number of inputs. So, a 4-input AND gate has 16 possible combinations, 5 inputs would be 32 outputs, and so on.

## How many input and output lines does a multiplexer have?

A multiplexer is a combinational circuit that has 2 n input lines and a single output line. Simply, the multiplexer is a multi-input and single-output combinational circuit. The binary information is received from the input lines and directed to the output line.

## What is the truth table for an 8 to 1 multiplexer?

The truth table for an 8-to1 multiplexer is given below with eight combinations of inputs so as to generate each output corresponds to input. For example, if S2= 0, S1=1 and S0=0 then the data output Y is equal to D2. Similarly the data outputs D0 to D7 will be selected through the combinations of S2, S1 and S0 as shown in below figure.

**How are multiplexers used in digital logic circuit?**

Multiplexers in Digital Logic. It is a combinational circuit which have many data inputs and single output depending on control or select inputs. For N input lines, log n (base2) selection lines, or we can say that for 2 n input lines, n selection lines are required. Multiplexers are also known as “Data n selector, parallel to serial convertor,

**How is binary information received in a multiplexer?**

The binary information is received from the input lines and directed to the output line. On the basis of the values of the selection lines, one of these data inputs will be connected to the output. Unlike encoder and decoder, there are n selection lines and 2 n input lines.

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