JD54F258BFA

Overview

The JD54F258BFA is a high-speed Schottky TTL octal bus transceiver manufactured by National Semiconductor. It features three-state outputs and is designed for bidirectional data transmission between buses. The device operates with a supply voltage range typical of the 54F series, ensuring reliable performance in military and aerospace applications. It includes built-in clamp diodes on inputs to suppress transient voltages, enhancing system robustness against ESD events.

Feature Summary

• Octal bus transceiver architecture supporting bidirectional data flow
• High-speed Schottky TTL technology for rapid switching
• Three-state outputs allowing multiple devices on a shared bus
• Integrated input clamp diodes for transient voltage suppression

Applications

• Military communication systems requiring radiation-hardened or high-reliability components
• Aerospace data bus interfaces
• High-speed memory buffer applications
• Industrial control systems with strict environmental tolerances

Procurement Notes

Verify the manufacturer date code and lot traceability when sourcing this component, as it may be available through surplus channels. Confirm that the package matches the specified BFA ceramic flatpack variant. Ensure compliance with relevant military specifications if the application demands qualified parts. Check for any lead-free or RoHS exemptions if required by your specific regulatory framework.

Selection Notes

Select this part when high-speed bidirectional transfer is needed in harsh environments. Compare pin compatibility with existing designs before substitution. Consider thermal dissipation requirements due to the ceramic package type. Evaluate power consumption against system constraints, noting the inherent characteristics of Schottky TTL logic families.

Part Context

This component belongs to the 54F series, which denotes military-grade performance standards. The 'JD' prefix typically indicates a specific packaging or processing variant within National Semiconductor's catalog. It serves as a critical interface element in legacy high-speed digital systems where reliability and speed are paramount.

Replacement Considerations

Direct replacements include other 54F-series octal transceivers from compatible manufacturers. Verify pinout compatibility before substituting with modern equivalents. Ensure voltage levels and drive strengths match the original design specifications.