CD4016 (Four Analog Switches)

Description

CD4016 – A CMOS Chip With Four Analog Switches The CD4016 is a CMOS IC with four analog switches, which can be controlled individually using a control pin. The signal can flow in either direction between the two pins of each switch. Each switch has an enable pin (A) and two input/output pins (X and Y). When the enable pin is set to HIGH, current can flow between X and Y in either direction. However, when enable is LOW, no current can flow between the pins. Just like a switch. Pin Overview Pin Name Pin # Type Description VDD 14 Power Supply Voltage (+3 to +15V) GND 7 Power Ground (0V) A1-A4 5,6,12,13 Input Enable pins for the four bilateral switches X1-X4 1,3,9,11 Input/Output Pin X for each switch Y1-Y4 2,4,8,10 Input/Output Pin Y for each switch Pin overview for the 4016 IC What is an analog switch? An analog switch is a circuit that behaves like a relay, but without any moving parts. Each switch is made of two MOSFET transistors. And it works with both analog and digital signals in either direction (bi-directional). The switch can be opened or closed using an enable pin. When HIGH, the MOSFET switch closes so that current can flow. When the enable is set LOW the MOSFET switch opens so that current cannot flow. The 4016 IC has four of these switches. How To Use The 4016 IC First of all, you need to connect the VDD pin (pin 14) to your positive supply terminal and GND pin (pin 7) to your negative supply terminal. You can use a power supply voltage between 3V and 15V. Although