74F240SJX

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74F240SJX is an octal buffer and line driver belonging to the F/FAST logic series. It features two functional units, each handling four bits with inverted outputs. The device utilizes a 3-state output configuration and operates within a TTL-compatible framework. It is housed in a ceramic LCC-20 package (CQCC20) with a maximum propagation delay of 5.7 ns. The component supports a standard 5 V power supply and functions within an operating temperature range from -55 °C to 125 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides high-speed bus driving capabilities through inverted 3-state outputs
• Features a dual-function architecture with independent control for enhanced system flexibility
• Designed for robust performance in demanding digital environments using TTL-compatible inputs

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed data bus buffering in computing systems
• Memory address and data line drivers
• Clock signal distribution networks
• Bus-oriented transmitter and receiver circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix SJX against official Fairchild documentation to confirm the exact package variant and moisture sensitivity level. Ensure compatibility with existing PCB footprints for the CQCC20 ceramic package. Confirm that the 3-state enable logic aligns with current design requirements before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed signal integrity is critical for bus applications. The F/FAST series offers superior switching speeds compared to standard logic families. Consider the ceramic package for thermal stability and reliability in harsh industrial or military environments where plastic packages may be insufficient.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the widely adopted 74F logic family, known for its speed-performance balance. The 74F240 specifically addresses the need for octal buffering with tri-state capability. It serves as a foundational component in digital logic designs requiring efficient data flow management between microprocessors and peripheral devices.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.