A Multiplexer or Mux is a device that has many inputs and a single output. The selected line decides which i/p is connected to the o/p, and also increases the amount of data that can be sent over an n/w within a certain time. A multiplexer is also called as a data selector. IDT offers a wide selection of high-speed CMOS analog multiplexer and demultiplexer products with very low propagation delay ideal for bidirectional interfaces. Multiplexers / Demultiplexers 2 Input 1 Output Encoders, Decoders, Multiplexers & Demultiplexers are available at Mouser Electronics. Mouser offers inventory.
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With multiplexers and demultiplexers input signals and one output signal, multiplexers and demultiplexers device is referred to as a 2-to-1 multiplexer; with four input signals it is a 4-to-1 multiplexer; etc. Free Webinar Register Today!
For digital signals in telecommunications on a computer network or with digital video, several variable bit-rate data streams of input signals using packet mode communication may be combined, or multiplexed, into one constant bandwidth signal.
With an alternate method utilizing a TDM, a limited number of constant bit-rate data streams of input signals may be multiplexed into one higher bit-rate data stream.
Both circuit elements are needed at both ends of a transmission link multiplexers and demultiplexers most communications systems transmit in both directions. In analog circuit design, a multiplexer is a multiplexers and demultiplexers type of analog switch that connects one signal selected from several inputs to a single output.
Digital multiplexers[ edit ] In digital circuit design, the selector wires are of digital value. In the case of a 2-to-1 multiplexer, a logic value of 0 would connect I.
Demultiplexers A demultiplexer is a combinational digital logic switching device that has a single input line and multiple outputs. In addition to the input and output lines, the demultiplexer has data select lines through which the data passed from the input line to an output line is determined  as shown below: Let us multiplexers and demultiplexers implement a demultiplexer circuit and observe our findings and compare to the theory above.
Run multiplexers and demultiplexers simulation then toggle the data select lines to different combinations and compare to the truth table studied earlier.
You multiplexers and demultiplexers notice that the resulting output is indicated by the illumination of the respective LED on the right hand side as shown below: Thus we have confirmed the functionality of this demultiplexer circuit according to the theory of operation we studied at the beginning of this tutorial.