CD4038 Triple serial adder


CD4038 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4038 has a Triple serial adder

CD4038 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.

CD4038 Features

  • Single-Phase Clocking
  • Buffered Inputs and Outputs
  • Standard Symmetrical Output Characteristics
  • 100% Tested for Maximum Quiescent Current at 20V
  • 5V, 10V, and 15V Parametric Ratings

CD4038 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

CD4038 Pinout Diagram

CD4038 Pin Description

Pin NoPin NameDescription
1SUM 3Sum Of Serial Adder 3
2INVERT 3Invert Pin 3
3CLKClock Pin
4SUM 2 Sum Of Serial Adder 2
5INVERT 2Invert Pin 2
6CARRY RESETCarry Reset Pin
7INVERT 1Invert Pin 1
8VSSSupply Voltage
9SUM 1 Sum Of Serial Adder 1
10A1Serial Adder 1 Input Pin 1
11B1 Serial Adder 1 Input Pin 2
12B2 Serial Adder 2 Input Pin 2
13A2 Serial Adder 2 Input Pin 1
14B3 Serial Adder 3 Input Pin 2
15A3 Serial Adder 3 Input Pin 1
16VDDDrain Voltage

CD4038 Circuit


  • Add two binary numbers 

CD4038 Alternative Equivalent

Download CD4038 Triple serial adder Datasheet from the link given below.