CD4068 8-input NAND/AND Gate


CD4068 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4068 has an 8-input NAND/AND Gate

CD4068 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.

CD4068 Features

  • High Voltage Type (20V Rating)
  • Medium Speed Operation
    • TPHL, TPLH = 75ns (Typ.) at VDD = 10V
  • Buffered Inputs and Outputs
  • 5V, 10V and 15V Parametric Ratings
  • Standardized Symmetrical Output Characteristics
  • 100% Tested for Quiescent Current at 20V
  • 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

CD4068 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

CD4068 Pinout Diagram

CD4068 Pin Description

Pin NoPin NameDescription
1K=A.B.C.D.E.F.G.HOutput Of NAND/AND Gate
2AInput A Of NAND/AND Gate
3B Input B Of NAND/AND Gate
4C Input C Of NAND/AND Gate
5D Input D Of NAND/AND Gate
6NCNo Connection
7VSSSupply Voltage
8NC No Connection
9E Input E Of NAND/AND Gate
10F Input F Of NAND/AND Gate
11G Input G Of NAND/AND Gate
12H Input H Of NAND/AND Gate
13J=(A.B.C.D.E.F.G.H)’ Output Of NAND/AND Gate
14VDDDrain Voltage

CD4068 Circuit


  • Burglar alarm
  • Freezer warning buzzer

CD4068 Alternative Equivalent

CD4011, CD4012, CD4023

Download CD4068 8-input NAND/AND Gate Datasheet from the link given below.