JM54ACT240SSA-R

Overview

The JM54ACT240SSA-R is a high-speed CMOS octal bus buffer manufactured by National Semiconductor. It features three-state inverted outputs and operates within a supply voltage range of 4.5V to 5.5V. The device supports output currents of 24mA for both sourcing and sinking. It is designed for military-grade performance with an operating temperature range of -55°C to +125°C.

Feature Summary

• High-speed CMOS technology for rapid signal processing
• Three-state outputs enabling efficient bus line management
• Inverted logic configuration for specific interface requirements
• Robust drive capability supporting multiple loads

Applications

• Military aerospace bus systems
• Harsh environment data buffering
• High-reliability digital interfaces
• Spacecraft communication subsystems

Procurement Notes

Verify the component origin, as National Semiconductor was acquired by Texas Instruments. Confirm that the part meets current military specifications if required for your application. Check for RoHS compliance status, as older manufacturing runs may differ from modern equivalents. Ensure the ceramic package integrity is intact upon receipt.

Selection Notes

Select this component when high-speed CMOS performance is required in a military or space-rated environment. It is suitable for applications needing octal buffering with inverted outputs. Consider the 24mA drive strength for driving heavy capacitive loads. Verify compatibility with existing 5V logic families in the system design.

Part Context

This part belongs to the 54ACT series, which combines the speed of advanced TTL with CMOS low power consumption. The 'JM' prefix typically denotes military grade qualification. The 'SSA-R' suffix indicates a specific tape-and-reel packaging format for automated assembly processes.

Replacement Considerations

Direct replacements include other 54ACT240 variants from manufacturers like Texas Instruments or Rochester Electronics. Ensure any substitute maintains the same ceramic DIP package and military temperature rating. Verify pinout compatibility before integration.