
Multiplexers (MUX) Demystified: The Data Traffic Controller
TL;DR: A multiplexer selects one of data inputs with an -bit select code. For a 4-to-1 MUX, . Constants on the data inputs turn a MUX into a...
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A decoder selects an output from an input code; a multiplexer selects which data input reaches its output. Follow the articles below, then verify the selection order and pin behavior in the matching component reference.

TL;DR: A multiplexer selects one of data inputs with an -bit select code. For a 4-to-1 MUX, . Constants on the data inputs turn a MUX into a...