CD4016 - Quad Bilateral Switch IC
The CD4x Series CD4016 is a quad bilateral switch intended for the transmission or multiplexing of analog or digital signals. It is pin-for-pin compatible with CD4066B.
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.
Pinout:

Pinout of CD4016 IC
| 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 |