how it is possible????

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srimathy

Joined Aug 24, 2006
2
Hi,
A multiplexer has selectors and so it will have only one output.But a demultiplexer has only one input and how does it have many outputs?
 

Papabravo

Joined Feb 24, 2006
14,412
A demultiplexer has selectors also. On a 74xx138 they are labeld A, B, and C. On this chip there are also three enables called G1, G2A, and G2B.
G1 must be high and G2A and G2B must be low.
 

Dave

Joined Nov 17, 2003
6,970
Hi,
A multiplexer has selectors and so it will have only one output.But a demultiplexer has only one input and how does it have many outputs?
The demultiplexer has a single data input, but n address inputs, therefore the number of outputs is 2^n. The address selects the output that will follow the data input.

Dave
 
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