4022 IC 4-Stage Johnson Counter

CD4022
is
TTL logic Octal Counter IC
. It has eight output pins which increments from zero to eight for every input clock pulse. The maximum clock frequency is 5Mhz and is commonly used in digital counters, LED drivers, and other digital arithmetic applications.

Pin Configuration

Pin Number

Pin Name

Description

1 to 6 and 7,10,11

Output pins 0 to 7

These are the 8 output pins on which the counting occurs, they are not in order hence verify pin diagram above

8

Vss or Ground

Connected to the Ground of the circuit

12

Carry Out (CO)

This pin goes high after the IC counts from 1 to 10. This is used as a carry while counting.

13

Clock Enable (EN)

This is an input that when made high will hold the count at the current state

14

Clock

The counting happens when this clock pulse goes high, this pin is normally connected to a 555 timer or other uC to produce a pulse

15

Resets

As the name suggests this pin resets the count back to 1

16

Vdd / Vcc

Connects to the supply voltage typically +5V

Features

High speed 16 pin
CMOS Decade counter

Supports 10 decoded outputs

wide supply voltage range from 3V to 15V, typically +5V

TTL compatible

Operating Clock Frequency: 5 Mhz

High-Level Output Voltage: 4.5V @5V Vcc

High-Level Output Current: 0.36mA

Available in a 16-pin PDIP package

Note: Complete Technical Details can be found on the
CD4022 datasheet
given at the end of this page.

Where to use CD4022 IC

The
IC CD4022
is used for counting applications, it has the capability to turn on 8 outputs sequentially in a pre-defined time and reset the count or hold it when required. It also has the capability to indicate the status of counting using a Carry pin. This is commonly used for LED chasers and other logical output projects, where you need to perform arithmetic operations. It is also called a Divide by 8 Counter since the carry pin produces one clock pulse for every 8 pulses on the clock pin. So if you are looking for a sequential decoded counting IC that can count up to 8 then this IC will be your right choice.

Applications

Used in LED matrix, LED chaser, and other LED projects

Binary counter or Binary decoder

Can be used for dividing by N counting

remote metering, automotive, medical electronic

Instrumentation and Alarm systems

Component Datasheet

CD4022 Datasheet