74LS83 4-Bit Binary FULL ADDER With Fast Carry 5V IC DIP-16
The 74LS83 is a high-speed 4-bit binary full adder designed to perform binary addition of two 4-bit input words, A and B, together with an incoming carry signal. It provides four sum outputs and a final carry output, making it useful for arithmetic operations in digital systems, calculators, counters, and processor-related circuits.
This IC uses internal carry-lookahead circuitry to improve carry propagation speed compared with basic ripple-carry arrangements. It supports positive-logic or negative-logic operation and comes in a 16-pin dual in-line package (DIP-16), suitable for through-hole PCB assembly and breadboard prototyping. The supplied datasheet identifies the device as the SN54/74LS83A family; verify the exact marking on your component when matching specifications.
Features:
- Performs binary addition of two 4-bit input words.
- Accepts an external carry input.
- Provides four sum outputs and a carry output.
- Internal carry-lookahead circuitry.
- Supports positive-logic and negative-logic operation.
- TTL-compatible digital logic Through-hole package for convenient prototyping.
Specifications:
| Parameter | Specification |
|---|---|
| IC Number | 74LS83 / 74LS83A family |
| IC Type | 4-Bit Binary Full Adder |
| Logic Family | 74LS TTL |
| Number of Bits | 4 |
| Number of Sum Outputs | 4 |
| Carry Input | 1 (C0) |
| Carry Output | 1 (C4) |
| Supply Voltage | 4.75V to 5.25V for commercial 74-series operation |
| Nominal Supply Voltage | 5V |
| Supply Current | Approximately 34–39mA under datasheet test conditions |
| Package Type | DIP-16 |
| Mounting Type | Through-hole |
| Propagation Delay | Approximately 15–24ns for sum outputs under specified test conditions |
| Operating Temperature | 0°C to 70°C for commercial 74-series devices |
Pinout:
| Pin Number | Pin Name | Description |
| 10,8,3,1 | A1, A2, A3, A4 | First Input for the adder circuit (Four pins for four stages) |
| 11,7,4,16 | B1, B2, B3, B4 | Second Input for the adder circuit (Four pins for four stages) |
| 13 | C0 | Carry Input – from the previous stage if present. |
| 9,6,2,15 | S1, S2, S3, S4 | Output pin for the Adder circuit (Four pins for four stages) |
| 14 | C4 | Carry Out the pin to cascade with other ICs. |
Applications:
- High-Speed Arithmetic operations.
- Miniature calculators.
- Counters.
- Simple logic control designs.
Package Includes:
- 1 × 74LS83 4-Bit Binary FULL ADDER With Fast Carry 5V IC DIP-16.
