SNJ54AS240FK

Overview

The SNJ54AS240FK is a military-grade octal buffer and line driver from Texas Instruments, belonging to the AS logic series. It features inverting outputs with three-state capability and operates within a supply voltage range of 4.5 V to 5.5 V. The device is housed in a 20-lead ceramic LCCC package (8.89 mm x 8.89 mm) designed for high reliability. It supports an operating temperature range from -55°C to +125°C, making it suitable for demanding environments.

Feature Summary

• Provides eight inverting buffer channels with independent three-state control
• Utilizes advanced Schottky technology for high-speed signal processing
• Engineered with ceramic packaging for enhanced durability in harsh conditions

Applications

• Military aerospace communication systems
• High-reliability data bus interfacing
• Harsh environment signal buffering

Procurement Notes

Verify the specific suffix 'FK' corresponds to the ceramic LCCC package variant when sourcing. Confirm RoHS compliance status as military parts may differ from commercial standards. Ensure the supplier provides traceability documentation required for defense or aerospace procurement protocols.

Selection Notes

Select this component for applications requiring high-speed inversion with robust thermal stability. The AS series offers faster performance than standard LS logic while maintaining compatibility. Consider the ceramic package for vibration resistance and long-term reliability in critical infrastructure.

Part Context

This part belongs to the SN54xx family of military-grade logic devices. Unlike commercial SN74 variants, SN54 components are qualified for extended temperature ranges and stricter manufacturing controls. The AS series represents a high-speed evolution within the TTL-compatible landscape.

Replacement Considerations

Direct substitutes include SNJ54ALS240FK for lower power consumption or SNJ54S240FK for standard speed. Verify pinout compatibility and electrical characteristics before swapping to ensure system integrity.