SN54S280J

Overview

The SN54S280J is a military-grade, 9-bit odd/even parity generator/checker from the Texas Instruments S-TTL series. It operates on a single 5V supply with a voltage range of 4.5V to 5.5V. The device features complementary outputs and is housed in a 14-pin ceramic dual-in-line package (CDIP). It supports an extended operating temperature range from -55°C to 125°C, ensuring reliability in harsh environments.

Feature Summary

• Provides simultaneous odd and even parity generation or checking for 9-bit data words
• Features complementary output signals for flexible logic interfacing
• Constructed with high-speed TTL technology for rapid signal processing
• Designed for robust performance in extreme thermal conditions

Applications

• Military communication systems requiring high-reliability data integrity
• Avionics data bus monitoring and error detection
• Spacecraft telemetry data validation circuits
• Industrial control systems operating in severe environmental conditions

Procurement Notes

Verify that the specific SN54S280J variant matches the required military qualification standards and ceramic packaging specifications. Confirm the pinout compatibility with existing board layouts, as S-TTL packages may differ from plastic equivalents. Ensure the supplier provides traceability documentation for components intended for defense or aerospace applications.

Selection Notes

Select this component when high-speed parity checking is required alongside strict military temperature and radiation tolerance standards. Compare against SN54LS280J if lower power consumption is prioritized over speed, or SN54AS286 if integrated bus-driver functionality is needed instead of pure parity logic.

Part Context

This part belongs to the SN54xx series, which denotes military-grade devices capable of operating across the full -55°C to 125°C temperature range. It is functionally similar to the commercial SN74S280 but utilizes ceramic construction for enhanced durability and hermetic sealing compared to standard plastic packages.

Replacement Considerations

SN54LS280J offers slower switching speeds but lower power consumption. SN54AS286 includes additional bus-driver capabilities for I/O port expansion. Verify pin-to-pin compatibility before substituting with these alternatives.