The 1-to-2 Line Decode-Demultiplexer

The 1-to-2 Line Decode-Demultiplexer - The 1-to-2 Line...

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The 1-to-2 Line Decoder/Demultiplexer The opposite of the multiplexer circuit, logically enough, is the demultiplexer . This circuit takes a single data input and one or more address inputs, and selects which of multiple outputs will receive the input signal. The same circuit can also be used as a decoder , by using the address inputs as a binary number and producing an output signal on the single output that matches the binary address input. In this application, the data input line functions as a circuit enabler — if the circuit is disabled, no output will show activity regardless of the binary input number. A one-line to two-line decoder/demultiplexer is shown below. This circuit uses the same AND gates and the same addressing scheme as the two-input multiplexer circuit shown in these pages. The basic difference is that it is the inputs that are combined and the outputs that are separate. By making this change, we get a circuit that is the inverse of the two-input multiplexer. If you were
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This document was uploaded on 02/06/2012.

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The 1-to-2 Line Decode-Demultiplexer - The 1-to-2 Line...

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