CY74FCT543ATSOCT

Overview

The CY74FCT543ATSOCT is an octal registered bus transceiver from the FCT logic series, manufactured by Texas Instruments. It features a single circuit with eight-bit width and non-inverting true outputs housed in a 24-pin SOIC package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. Key electrical parameters include a propagation delay of 6.5 ns, low-level output current of 64 mA, and high-level output current of -32 mA. It functions as a tri-state transceiver with independent control capabilities.

Feature Summary

• Octal registered bus transceiver architecture providing data storage and bidirectional transfer
• Tri-state outputs allowing connection to shared bus structures without interference
• TTL-compatible input and output levels ensuring interface compatibility with standard logic families

Applications

• High-performance register transfers in computer systems
• Buffering and bus-oriented memory address registers
• Clock drivers for synchronous data transmission

Procurement Notes

Verify the specific suffix 'A' against official datasheets to confirm temperature grade and manufacturing lot details. Ensure the SOIC-24 package dimensions match the target PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's current documentation before finalizing procurement specifications.

Selection Notes

Select this component when an octal registered transceiver with FCT speed characteristics is required. The 6.5 ns propagation delay suits high-speed digital applications. Verify that the 4.75 V to 5.25 V operating voltage aligns with the system power supply. Consider the SOIC-24 package size relative to available board space.

Part Context

This part belongs to the CY74FCT543T family of registered bus transceivers. It shares functional similarities with other FCT series devices but is distinguished by its octal configuration and registered output capability. The device integrates clocked data storage directly into the transceiver function for synchronized bus operations.

Replacement Considerations

Check for CY74FCT543TSOCT or CY74FCT543CTQCT as potential alternatives within the same family. Verify pinout compatibility and electrical parameter equivalence before substitution.