CD4012 Dual 4-input NAND Gate


CD4012 belongs to 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4012 has Dual 4-input NAND Gate

CD4012 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.

CD4012 Features

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

CD4012 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

CD4012 Pinout Diagram

CD4012 Pin Description

Pin NoPin NameDescription
1j=(ABCD)’The output of NAND Gate 1
2ANAND Gate 1 Input 1
3B NAND Gate 1 Input 2
4C NAND Gate 1 Input 3
5D NAND Gate 1 Input 4
6NCNot Connected
7VSSSupply Voltage
8NCNot Connected
9F NAND Gate 2 Input 1
10F NAND Gate 2 Input 2
11G NAND Gate 2 Input 3
12H NAND Gate 2 Input 4
13K=(EFGH)’ The output of NAND Gate 2
14VDDDrain Voltage

CD4012 Circuit


  • Freezer warning buzzer
  • Burglar alarm

CD4012 Alternative Equivalent

CD4011, CD4025

Download CD4012 Dual 4-input NAND Gate Datasheet from the link given below.