Multiplexer Schaltung. The outputs of upper 1x4 de multiplexer are y 7 to y 4 and the outputs of lower 1x4 de multiplexer are y 3 to y 0. The signals which control which input will be reflected at the output end is determined by the select input lines.
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The multiplexer used for digital applications also called digital multiplexer is a circuit with many input but only one output. We can implement 1x8 de multiplexer using lower order multiplexers easily by considering the above truth table. The schematic on the right shows a 2 to 1 multiplexer on the left and an equivalent switch on the right.
Since there are n selection lines there will be 2 n possible combinations of zeros and ones.
The common selection lines s 1 s 0 are applied to both 1x4 de multiplexers. The single pole multi position switch is a simple example of non electronic circuit of multiplexer and it is widely used in many electronic circuits the multiplexer is used to perform high speed switching and is constructed by electronic components. The cd4052 can be used as a 4 1 multiplexer that is it can take inputs from 4 channel and convert it to single channel output based in the channel select pins. The schematic symbol for a multiplexer is an isosceles trapezoid with the longer parallel side containing the input pins and the short parallel side containing the output pin.
