8 To 1 Multiplexer | MUX | Logic Diagram And Working 8 To 1 Multiplexer | MUX | Logic Diagram And Working Ankit jat. And I am Also will tell about its working With Logic Diagram And Uses. Firstly I will introduce what is mux. So. MUX - Mux is a device Which has 2^n Input Lines. But Only One have Output Line. Using 8:1 Multiplexers to Implement Logical Functions What this tells us is that the CD4512 is an 8:1 multiplexer. The three selection inputs, A, B, and C are used to select one of the eight D0 to D7 data inputs. Whatever logic value is on the selected input will be presented on the Q output.Author: Max Maxfield Digital Circuits - Multiplexers - Tutorialspoint We can implement 16x1 Multiplexer using lower order Multiplexers easily by considering the above Truth table. The block diagram of 16x1 Multiplexer is shown in the following figure. The same selection lines, s 2, s 1 & s 0 are applied to both 8x1 Multiplexers. The data inputs of upper 8x1 Multiplexer are I 15 to I 8 and the data inputs of lower 8x1 Multiplexer are I 7 to I 0. What is Multiplexer, How it works & Multiplexer Circuit The logic diagram utilises only the NAND gates and hence can be easily build on a perf board or even on a breadboard. It is also common to combine to lower order multiplexers like 2:1 and 4:1 MUX to form higher order MUX like 8:1 Multiplexer. Now, for example let us try to implement a 4:1 Multiplexer using a 2:1 Multiplexer.