8:1 MUX
Theory
> An 8×1 MUX is a combinational circuit that selects one out of eight inputs and forwards it to a single output line based on 3 select lines.
> Selection Mechanism:
The binary combination of select lines determines which data input is connected to the output:
000 → Y = D0
001 → Y = D1
010 → Y = D2
011 → Y = D3
100 → Y = D4
101 → Y = D5
110 → Y = D6
111 → Y = D7
Truth Table
Boolean Expression
y = ~s2 & ~s1 & ~s0 & d0 | ~s2 & ~s1 & s0 & d1 | ~s2 & s1 & ~s0 & d2 | ~s2 & s1 & s0 & d3 | s2 & ~s1 & ~s0 & d4 | s2 & ~s1 & s0 & d5 | s2 & s1 & ~s0 & d6 | s2 & s1 & s0 & d7
Block Diagram
RTL