Can a single multiplexer function as both multiplexer and demultiplexer?
Yes, with control over selection inputs, a single multiplexer IC can serve as either a multiplexer or demultiplexer based on the active input/output combinations. This property allows flexible usage in bidirectional data transfer applications.
Is the number of selection lines always equal to log2 of the number of inputs?
Yes, for an N x 1 multiplexer having N inputs, the number of selection lines S required is always log2N, since each selection line doubles the number of possible combinations.
How can higher order multiplexers be designed using basic gates?
Higher order multiplexers like 8x1 or 16x1 can be implemented by cascading 2x1 and 4x1 multiplexer blocks, with the outputs of lower stage as inputs to the next stage and aggregation of all selection lines.
What are the common input coding schemes used in multiplexers?
Popular coding methods for multiplexer inputs include binary coding and one-hot coding. Binary reflects numerical values, while one-hot coding employs a single high bit to select an option uniquely.
Can multiplexers be used as a replacement for complex logic functions? If yes, how?
Yes, by exploiting the property of connecting one of several inputs to output.