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De-multiplexer. A De-multiplexer is a combinational circuit that has only 1 input line and 2 N output lines. Simply, the multiplexer is a single-input and multi-output combinational circuit. The information is received from the single input lines and directed to the output line.
The functional block diagram of a 1×2 Demultiplexer is shown in Figure-2. The 1×2 Demultiplexer consists of 1 input line (I), 1 select line (S), and 2 output lines (Y 0 and Y 1). The logic level applied at the select line determines the output line to which the input data will be transmitted.
- 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.
A digital device capable of forwarding its single input onto any one of the output lines is called Demultiplexer abbreviated for DEMUX. It is the reverse of Multiplexer. A Demultiplexer has a single input and multiple outputs. It has 2n output lines where “n” is the number of control signals.
Feb 24, 2012 · Key learnings: Demultiplexer Definition: A demultiplexer (demux or data distributor) is defined as a circuit that distributes multiple outputs from a single input. Working Principle: It operates by using a control signal to select which output line will receive the input data.
We will cover what a is Demultiplexer, the block diagram of the Demultiplexer, the types of Demultiplexer, the need for Demultiplexer, and the advantages of Demultiplexer and in the end, we will see the application of Demultiplexer.
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Aug 17, 2023 · 1 to 4 Demultiplexer Block Diagram: A 1 to 4 Demultiplexer uses 2 select lines (A, B) to determine which one of the 4 outputs (D0 – D3) is routed from the input (E). Its characteristics can be described in the following simplified truth table.
