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 No | Pin Name | Description |
1 | SUM 3 | Sum Of Serial Adder 3 |
2 | INVERT 3 | Invert Pin 3 |
3 | CLK | Clock Pin |
4 | SUM 2 | Sum Of Serial Adder 2 |
5 | INVERT 2 | Invert Pin 2 |
6 | CARRY RESET | Carry Reset Pin |
7 | INVERT 1 | Invert Pin 1 |
8 | VSS | Supply Voltage |
9 | SUM 1 | Sum Of Serial Adder 1 |
10 | A1 | Serial Adder 1 Input Pin 1 |
11 | B1 | Serial Adder 1 Input Pin 2 |
12 | B2 | Serial Adder 2 Input Pin 2 |
13 | A2 | Serial Adder 2 Input Pin 1 |
14 | B3 | Serial Adder 3 Input Pin 2 |
15 | A3 | Serial Adder 3 Input Pin 1 |
16 | VDD | Drain Voltage |
CD4038 Circuit
Applications
- Add two binary numbers
CD4038 Alternative Equivalent
Download CD4038 Triple serial adder Datasheet from the link given below.