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Oct 12, 2022 · What is Demultiplexer? Circuit diagram, truth table and applications. Demultiplexer or Demux is a combinational circuit that distributes the single input data to a specific output line. The control inputs or selection lines are used to select a specific output line from the possible output lines.
Jul 29, 2024 · DEMUX or De-Multiplexer is a data distributor combinational circuit. It works in a reverse way of the Multiplexer. The DEMUX has 1 input port and 2^n output lines.
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.
- 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.
Sep 19, 2024 · The figure below shows the block diagram of a demultiplexer or simply a DEMUX. It consists of 1 input line, ‘n’ output lines and ‘m’ select lines. In this, m select lines are required to produce 2 m possible output lines (consider 2 m = n). For example, a 1-to-4 demultiplexer requires 2 (2 2 = 4) select lines to control the 4 output lines.
This Demux has 2 output channels and 1 control signal. When the control signal is “0”, the first output channel is selected. When the control signal is “1”, the second output channel is selected as a route for input data. There is also an Enable bit used for enabling or disabling the circuit.
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How does a demux work?
What is a 1 4 demultiplexer?
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What is the difference between de-multiplexer and de-MUX?
In this section, let us implement 1×8 Demultiplexer using 1×4 Demultiplexers and 1×2 Demultiplexer. We know that 1×4 Demultiplexer has single input, two selection lines and four outputs. Whereas, 1×8 Demultiplexer has single input, three selection lines and eight outputs.
