SN54LS280J

Overview

The SN54LS280J is a 9-bit odd/even parity generator and checker manufactured by Texas Instruments. It belongs to the SN54LS series of logic circuits, designed for military-grade reliability with an operating temperature range of -55°C to 125°C. The device features nine data inputs (A through I) and two complementary outputs: Sum (odd parity) and Carry (even parity). It utilizes standard TTL logic levels and is housed in a 16-lead ceramic dual-in-line package (CDIP), ensuring robust performance in harsh environments.

Feature Summary

• Provides simultaneous generation and checking of 9-bit odd and even parity
• Military-grade construction suitable for extreme temperature environments
• Offers complementary Sum and Carry outputs for flexible system integration

Applications

• Digital communication systems requiring error detection
• Military avionics and aerospace computing modules
• Industrial control systems with high reliability requirements

Procurement Notes

Verify the specific suffix J indicates the ceramic DIP package variant. Confirm the SN54 designation ensures military-grade qualification and extended temperature range compliance. Check for RoHS status if required by specific procurement policies, as legacy LS series parts may have varying environmental compliance statuses depending on production batch.

Selection Notes

Select this component when 9-bit parity processing is required within a military or industrial specification environment. Ensure the system design accommodates the power consumption characteristics typical of the LS series. Verify that the 16-pin CDIP footprint matches the target PCB layout constraints and thermal management requirements for the intended application scope.

Part Context

This part is part of the broader SN54LS family of logic devices, known for their standardized functionality across various logic gates and functional blocks. The SN54LS280 specifically addresses parity functions, complementing other SN54LS components like shift registers and counters in complex digital logic designs requiring data integrity verification.

Replacement Considerations

Compatible substitutes include the SN74LS280 for commercial grade applications, though it lacks the military temperature rating. Other variants such as SN54S280 offer faster switching speeds but different power characteristics. Verify pin compatibility and electrical specifications before substitution.