SN74LS283N

Specialty Logic Overview

The SN74LS283N is a four-bit binary full adder from the Texas Instruments LS logic series, housed in a 16-pin PDIP package. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a power dissipation of 95 mW. The device functions across an operating temperature range of 0°C to 70°C. Key electrical parameters include a low-level output current of 8 mA, a high-level output current of -0.4 mA, and propagation delays ranging from 17 ns to 24 ns.

Specialty Logic Feature Summary

• Executes addition of two four-bit binary words with corresponding sum outputs for each bit position.
• Features complete internal look-ahead carry generation across all four bits to minimize propagation delay.
• Outputs carry signals in true form, eliminating the need for external inversion logic or level shifting.

Specialty Logic Applications

• Digital arithmetic processing units requiring fast binary addition
• Address calculation circuits in microprocessor systems
• Data conversion logic including binary-to-BCD transformation implementations

Specialty Logic Procurement Notes

Verify the specific suffix 'N' confirms the through-hole PDIP-16 package configuration. Ensure the LS logic family designation matches the required speed and power constraints for the target design. Confirm RoHS compliance status if environmental regulations apply to the manufacturing process. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision history before integration.

Specialty Logic Selection Notes

Select this component when a standard TTL-compatible four-bit adder with integrated look-ahead carry is required. The LS technology offers a balance between power consumption and switching speed suitable for general-purpose digital logic. Consider the 16-pin DIP footprint for prototyping or legacy board designs. Evaluate alternative families like HC or AC only if lower power or higher speed specifications are strictly necessary for the application.

Specialty Logic Part Context

This device belongs to the widely used 74xx series of digital logic integrated circuits. The SN74LS283N specifically implements the function defined by the National Semiconductor 74LS83A specification. It serves as a fundamental building block for complex arithmetic operations in digital systems, providing reliable performance within the commercial temperature range defined for the LS series.

Specialty Logic Replacement Considerations

The SN74LS283NE4 is a verified equivalent variant from Texas Instruments. Other manufacturers produce functionally identical parts under different prefixes, such as the DM74LS283. Verify pinout compatibility and electrical characteristics before substituting with generic equivalents.