SN74LS280NS

Overview

The SN74LS280NS is a 9-bit parity generator and checker from the Texas Instruments SN74LS280 series. It operates on a single supply voltage ranging from 4.75 V to 5.25 V. The device features complementary outputs for odd and even parity generation or checking. It utilizes a 14-pin SOIC surface-mount package. Key electrical characteristics include a propagation delay of 45 ns, a maximum high-level output current of -2 mA, and a low-level output current of 24 mA. The component supports commercial operating temperatures between 0°C and +70°C.

Feature Summary

• Generates or checks 9-bit parity with complementary odd/even outputs
• Compatible with standard LS-TTL logic families
• Surface-mount construction in a 14-pin SOIC package

Applications

• Digital data transmission systems requiring error detection
• Computer memory modules for parity verification
• Industrial control logic circuits

Procurement Notes

Verify the specific suffix 'NS' against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Ensure the ordering information matches the required pin configuration and thermal performance standards for your design. Cross-reference the RoHS compliance status with the latest environmental declarations provided by Texas Instruments before finalizing procurement.

Selection Notes

Select this component when a 9-bit parity solution compatible with LS-TTL voltage levels is required. Consider the 45 ns propagation delay and 24 mA low-level sink capability for driving loads. Verify that the 14-pin SOIC footprint fits the PCB layout constraints. Confirm that the 4.75 V to 5.25 V supply range aligns with the system power architecture.

Part Context

This part belongs to the SN74LS280 family of parity generators/checkers. It provides a standardized interface for implementing parity functions in digital systems. The LS series offers a balance of speed and power consumption suitable for general-purpose logic applications. The device integrates nine input lines and two complementary outputs into a single integrated circuit.

Replacement Considerations

Direct replacements may include other SN74LS280 variants with different packaging options, such as DIP or TSSOP, provided the pinout remains compatible. Verify functional equivalence for any cross-series substitutions.