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CD4014 Static 8-Stage Shift Register

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The CD4014BC is an 8-stage parallel input/serial output shift register. A parallel/serial control input enables individual JAM inputs to each of 8 stages. Q outputs are available from the sixth, seventh and eighth stages. CD4014 have common CLOCK and PARALLEL/SERIAL CONTROL inputs, a single SERIAL data input, and individual parallel "JAM" inputs to each register stage.

 

Pin Description of CD4014:

Pin Number

Pin Name

Description

1, 4, 5, 6, 7, 13, 14, 15

PI-1 to PI-8

Parallel Inputs

2, 3, 12

Q6, Q7, Q8

 Outputs

10

CLOCK

 Clock Input

9

P/S

Parallel/Serail Control

11

Serial IN

Serial input Pin

8

VSS

Groung

16

Vdd (Vcc)

Supply Voltage – 5V, 10V, 15V

 

Features of CD4014:

  • 8-stage parallel input/serial output shift register
  • Operating Voltage: 3V to 18V
  • Propagation Delay Time: 320 ns
  • Maximum input current of 1 µA at 18 V
  • Number of Input Lines: 9
  • Number of Output Lines: 3
  • Operating Temperature Range:- 55 C to + 125 C
  • Available in 16-pin PDIP, GDIP, PDSO packages

Note: Complete Technical Details can be found at the CD4014 datasheet give at the end of this page.

 

Alternatives shift Registers: 

Name

Type

74LS379

Quad Parallel Shift Register

CD4035

Parallel In/Parallel out Shift Register

74LS166

8 Bit Shift Register

74LS323

8 Bit Shift/Storage Register

74LS164

S/P Shift Register

74HC595

Dual 4 Bit Static Register

74LS299

8 Bit Shift/Storage Register

 

Where to use CD4014 IC

The CD4014 is an 8-stage parallel input/serial output shift register. Meaning it can receive (input) data in parallel and control 4 output pins in parallel. This comes in very handy where you do not have enough GPIO pins on our MCU/MPU to control the required number of outputs. It is often used in projects where relatively a large number of LED’s has to be controlled through the Microcontroller. It can also be used to interface LCD screen since they can acts as the data bit for the LCD displays.

 

How to Use CD4014:

The CD4014 is an 8-stage CMOS Static Shift Register having common clock and parallel/serial control inputs, single serial data input and individual parallel JAM inputs to each register stage. Connection diagram for CD4014 IC is given below.

CD4014 Internal Diagram

In CD4014 each register stage is D-type, master-slave flip-flop. The pins 4, 5, 6, 7 and 8, 13, 14, 15 are parallel input pins and pins 2, 3 and 12 output pins. In which pin 1 is the clock which sends a constant pulse to keep timing. When the parallel/serial control input is in the logical “0” state, data is serially shifted into the register synchronously with the positive transition of the clock. When the parallel/ serial control input is in the logical “1” state, data is jammed into each stage of the register synchronously with the positive transition of the clock.

 

Applications of CD4014:

  • Parallel input/serial output data queueing
  • Parallel to serial data conversion
  • General-purpose register

 

2D Model of CD4014 (PDSO):

 CD4014 Dimensions

Component Datasheet

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