1 Introduction

Analog multiplexers are used in electronic systems to control a specific transmission path for an analog signal. These devices are used in a wide variety of applications, such as USB3, PCIe and HDMI system.

There can possible be a situation where the desired number of input channels are not available in multiplexers of a particular system. Cascading refers to a process where large multiplexers can be designed and implemented using smaller multiplexers. For instance, 8:1 Multiplexers can be designed using three 4:1 Multiplexers and similarly it can be designed using seven 2:1 multiplexer as shown in the below Figure 1-1.

Figure 1-1 Casacding of Multiplexers