CD4002 Dual 4-Input NOR Gate


CD4002 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4002 has Dual 4-Input NOR Gate

CD4002 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

CD4002 Features

  • High-Voltage Types (20V Rating)
  • Propagation Delay Time = 60ns (Typ.) at CL = 50pF,
  • VDD = 10V
  • Buffered Inputs and Outputs
  • Standard Symmetrical Output Characteristics
  • 100% Tested for Maximum Quiescent Current at 20V
  • 5V, 10V, and 15V Parametric Ratings
  • Maximum Input Current of 1μA at 18V Over Full Package-
  • Temperature Range; 100nA at 18V and +25oC
  • Noise Margin (Over Full Package Temperature Range):
    • 1V at VDD = 5V
    • 2V at VDD = 10V
    • 2.5V at VDD = 15V

CD4002 Specifications

Absolute Maximum Ratings

  • DC Supply Voltage Range, (VDD): -0.5V to +20V (Voltage Referenced to VSS Terminals)
  • Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
  • DC Input Current, Any One Input: ±10mA
  • Operating Temperature Range: -55oC to +125oC Package Types D, F, K, H
  • Storage Temperature Range (TSTG): -65oC to +150oC
  • Lead Temperature (During Soldering): +265oC
  • At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum

CD4002 Pinout Diagram

CD4002 Pin Description

Pin NoPin NameDescription
1J=(A+B+C+D)’Output Of NOR Gate 1
2ANOR Gate 1 Input 1
3BNOR Gate 1 Input 2
4CNOR Gate 1 Input 3
5D NOR Gate 1 Input 4
6NCNo Connection
7VSSSupply Voltage
8 NC No Connection
9E NOR Gate 2 Input 1
10F NOR Gate 2 Input 2
11GNOR Gate 2 Input 3
12HNOR Gate 2 Input 4
13K=(E+F+G+H)’NOR Gate 2 Output
14VDDDrain Voltage

CD4002 Circuit

Here is a simple circuit of NOR gate implementation using diodes and NPN transistor LED at the output for indication.


  • Mixer Tanks

CD4002 Alternative Equivalent

CD4001, CD4025

Download CD4002 Dual 4-Input NOR Gate Datasheet from the link given below