8 To 1 Multiplexer Using 2 To 1 Multiplexer. The below figure shows the block diagram of an 8 to 1 multiplexer with enable input that enable or disable the multiplexer. An 8 to 1 multiplexer consists of eight data inputs d0 through d7 three input select lines s2 through s0 and a single output line y.
Depending on the select lines combinations multiplexer decodes the inputs. The 2 1 multiplexer has only 1 selection line. As shown in the figure one can see that for select lines s2 s1 s0 011 and 100 the inputs d3 1 and d4 1 are available in output o 1.
Im pretty sure ive got the actual schematic down below.
The 8 1 multiplexer has 3 selection lines 4 inputs and 1 output. For getting 16 data inputs we need two 8 1 multiplexers. To implement the 8 1 multiplexer we need two 8 1 multiplexers and one 2 1 multiplexer. You may verify other combinations of select lines from the truth table.
