The CD4016 is a Quad Bilateral Switch IC, that is it has four switches which can be controlled individual using a control pin. These switches can conduct in both the directions making it bilateral, it is commonly used for multiplexing analog or digital signals.
Pin Configuration
| Pin Number | Pin Name | Description |
| 1, 3, 8, 11 | Switch Input A,B,C,D | Input pins for the four bilateral switches |
| 2, 4, 9, 10 | Switch Output A,B,C,D | Output pins for the four bilateral switches |
| 5, 6, 12, 13 | Control A,B,C,D | Control pins for the four bilateral switches |
| 7 | Ground | Ground pin of the IC |
| 14 | Vcc | Pin to power the IC |
Features
- Quad Bilateral Switch for Multiplexing
- Operating Voltage: 3V to 18V
- Switching Voltage: 20V (maximum)
- On-state Resistance: 200Ω (at 15V Vcc and 10kΩ Load)
- Output current High: -0.4mA
- Low Level Control pin Voltage: 0.9V (max)
- High Level Control pin Voltage: 11V (min @ 15V Vcc)
Note: Complete Technical Details can be found at the CD4016 datasheet given at the end of this page.
Where to use CD4016 IC
The CD4016 is commonly used in multiplexing applications; it can also be used to isolate signals. The switch is bilateral and hence can be used for both digital and analog signals. The IC can operate from 3V to 18V, but commonly operated at 5V, 10V or 15V nominal voltages. It can switch voltages upto 20V (peak).
How to Use CD4016 IC
The CD4016 has four bilateral switches that can be controlled independently using a digital signal. Each switch has two Input/output pins called SWx-IN and SWx-OUT. Both of which can be used as a input or output pin, they can also be used to switch variable voltages like PWM wave, sine wave etc of low magnitude and frequency. These two pins will can be controlled by the CONTROLx pin. The below simulation shows one out of the four switches in the IC.
As you can see here the two switch pins are named X and Y and the control pin is named as C. By default when control pin is logic 0 (0V) the switch is open (not connected), but when a control signal is given to control pin C the switch closes and the LED glows. You can also use this IC as a 4-Input multiplexer by combining all the four switches to a common point as shown below.
Applications
- 4-Input Multiplexer
- Sample and Hold circuits
- Network switching
- Dead band filter
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