The CD74HC4067M is a 16-channel high speed CMOS Analogue Multiplexer/Demultiplexer. This device is digitally controlled analogue switch that utilize silicon-gate CMOS technology to achieve operating speeds similar to LSTTL, with the low power consumption of standard CMOS integrated circuits. This analogue multiplexer/demultiplexer control analogue voltages that may vary across the voltage supply range. This multiplexer/demultiplexer is bidirectional switch thus allowing any analogue input to be used as an output and vice-versa. The switch has low “on” resistance and low “off” leakages. In addition, this device has an enable control which when high will disable all switch to its “off” state.