SNJ54LS279AW

Overview

The SNJ54LS279AW is a military-grade quadruple S-R latch from Texas Instruments, designed for high-reliability applications. It operates within an extended temperature range of -55°C to 125°C and utilizes a 16-pin Ceramic Flat Pack (CFP) package. The device contains four independent S-R latches, each featuring Set and Reset inputs along with a Data output. As part of the SN54LS279A series, it adheres to standard TTL logic specifications while meeting QML certification requirements for defense and aerospace environments.

Feature Summary

• Military-grade construction certified for QML standards
• Extended operating temperature range suitable for harsh environments
• Contains four independent S-R latch circuits

Applications

• Military defense systems
• Aerospace avionics
• High-reliability industrial control

Procurement Notes

Verify the specific ordering suffix 'W' corresponds to the Ceramic Flat Pack package configuration. Confirm that the QML certification status aligns with current procurement requirements. Ensure compatibility with existing board layouts designed for 16-pin CFP footprints. Check for any updated environmental compliance statements regarding lead-free finishes if applicable to the specific production lot.

Selection Notes

Select this component when military-grade reliability and wide temperature operation are mandatory. The SNJ54LS279AW is appropriate for designs requiring QML certification. Consider the physical dimensions of the CFP package during PCB layout. Evaluate cost implications compared to commercial grade alternatives if environmental constraints allow.

Part Context

This part belongs to the SN54LS279A family of quadruple S-R latches. It shares functional characteristics with the SN74LS279A but differs in manufacturing standards and operational limits. The SN54 series is specifically qualified for military use, distinguishing it from the commercial SN74 series variants available in other packages such as SOIC or PDIP.

Replacement Considerations

SNJ54LS279AJ (CDIP package), SNJ54LS279AFK (LCCC package)