CD4026 Johnson Decade Counter/Divider With Decoded 7-Segment Display IC in Pakistan

Pin Number

Pin Name

Description

1

Clock (CLK)

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

2

Clock Inhibit (INH)

Connected to the Ground (low) of the circuit, to enable clock pin

3

Enable Input (DEI)

This pin is connect to +5V (high) to enable the output pins (Out A to Out G)

4

Enable Output (DEO)

This is an output which always stays high, this pin will be only if more than one CD4026 IC is used (cascaded)

5

Divide by 10 (CO)

This is the carry over output pin; it produces a pulse after counting till 9. This pin will be only if more than one CD4026 IC is used (cascaded)

6,7,9,10,11,12,13

Out A,B,C,D,E, F,G

These are the decoded output pins which should connected to 7-Segment display.

8

Ground

The ground pin should be connected to ground of circuit

14

Not 2 out (UCS)

This is Ungated C segment pin. This is an output pin which will be rarely used when division is required.

15

Reset

This input pin when made high (+5V) will reset the count to 0.

16

Vcc

This pin powers the IC, typically +5V is used.