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What is a demultiplexer (DEMUX)?
Jul 29, 2024 · The DEMUX has 1 input port and 2^n output lines. The DEMUX increases the efficiency of the particular communication system as it takes data from a specific input source and distributes it to different sources.
- What Is A Demultiplexer?
- 1-to-2 Demultiplexer
- 1-to-4 Demultiplexer
- 1-to-8 Demultiplexer
- Applications of Demultiplexer
- Conclusion
Demultiplexing is the process of getting information from one input and transmitting the same over one of many outputs. If you recall the Multiplexer tutorial, there we discussed the concept of Multiplexing. Demultiplexing is just the opposite of that. A Demultiplexer is a combinational logic circuit that receives the information on a single input ...
A 1-to-2 demultiplexer consists of one input line, two output lines and one select line. The signal on the select line helps to switch the input to one of the two outputs. The figure below shows the block diagram of a 1-to-2 demultiplexer with additional enable input. In the figure, there are only two possible ways to connect the input to output li...
A 1-to-4 demultiplexer has a single input (D), two selection lines (S1 and S0) and four outputs (Y0 to Y3). The input data goes to any one of the four outputs at a given time for a particular combination of select lines. This demultiplexer is also called as a 2-to-4 Demultiplexer, which means that it has two select lines and 4 output lines. The blo...
The below figure shows the block diagram of a 1-to-8 demultiplexer that consists of single input D, three select inputs S2, S1 and S0 and eight outputs from Y0 to Y7. It is also called as 3-to-8 demultiplexer due to its three select input lines and 8 output lines. It distributes one input line to one of 8 output lines depending on the combination o...
Since the demultiplexers are used to select or enable the one signal out of many, these are extensively used in microprocessor or computer control systems such as: 1. Selecting different IO devices for data transfer (Data Routing) 2. Choosing different banks of memory (Memory Decoding) 3. Depends on the address, enabling different rows of memory ch...
A complete beginner’s guide on Demultiplexers or DEMUX. You learned what is a Demultiplexer, different types of Demux like 1-to-2, 1-to-4, 1-to-8, 1-to-16, their logic circuits and some important applications of Demultiplexers.
- 1-to-4 Channel De-multiplexer. Output Select. Data Output. Selected b a 0 A 1 B C D. The Boolean expression for this 1-to-4 Demultiplexer above with outputs A to D and data select lines a, b is given as
- Demultiplexer Output Line Selection. As with the previous multiplexer circuit, adding more address line inputs it is possible to switch more outputs giving a 1-to-2 data line outputs.
- 4 Channel Demultiplexer using Logic Gates. The symbol used in logic diagrams to identify a demultiplexer is as follows.
- The Demultiplexer Symbol. Again, as with the previous multiplexer example, we can also use it to digitally control the gain of an operational amplifier as shown.
Oct 12, 2022 · The control inputs or selection lines are used to select a specific output line from the possible output lines. Demultiplexer works opposite to that of the multiplexer. Demux has one output, 2 n possible outputs and n control or selection lines. It is also called a data distributor.
A Demultiplexer has a single input and multiple outputs. It has 2 n output lines where “n” is the number of control signals. Each combination of control signal selects a specific output line through which the input data signal should flow out. These output lines are known as channels.
Feb 24, 2012 · A demultiplexer (also known as a demux or data distributor) is defined as a circuit that can distribute or deliver multiple outputs from a single input. A demultiplexer can perform as a single input with many output switches. The demultiplexer’s output lines are ‘n’ in number, the select line number is ‘m’ and n = 2 m.
Nov 19, 2021 · A 1-4 Demux includes a single input like D, 2-selection lines like S1 & S0 & 4 outputs like X0, X1, X2 & X3. The data at input transmits to any one of the outputs in a specified time for a specific arrangement of select lines. The 1:4 Demux block diagram and its truth table are shown below.
