CY74FCT2543ATSOC

Overview

The CY74FCT2543ATSOC is an octal registered bus transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and features TTL-compatible input and output levels. The device provides three-state outputs with series damping resistors for signal integrity. It supports a propagation delay of 5.5 ns and delivers a low-level output current of 12 mA and a high-level output current of -15 mA. The component is housed in a 24-pin SOIC package and functions as a non-inverting latched transceiver.

Feature Summary

• Integrates eight-bit registered bus transceiver functionality with true output polarity.
• Includes built-in series damping resistors to enhance signal quality on transmission lines.
• Provides three-state outputs allowing safe connection to shared bus architectures.

Applications

• High-speed data acquisition systems requiring registered buffering.
• Clock distribution networks utilizing damped transmission paths.
• Memory interface circuits needing isolated bidirectional data transfer.

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm pinout compatibility and electrical characteristics. Ensure the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the ordering information with the latest datasheet revisions to avoid discrepancies in packaging or material specifications.

Selection Notes

Select this component when designing systems that require registered data storage at the receiving end of a bus. The integrated damping resistors make it suitable for applications where signal reflection control is critical without external components. Verify that the required operating temperature range and power supply constraints align with the specified 4.75 V to 5.25 V window and industrial temperature limits.

Part Context

This part belongs to the FCT logic family, which combines CMOS density with TTL speed. The CY74FCT2543 variant specifically adds registration capabilities compared to standard unregistered transceivers. It serves as a bridge between microprocessors and peripheral devices, ensuring data stability during bus transactions through internal latching mechanisms.

Replacement Considerations

Check for direct substitutes such as the CY74FCT2543CTSOC or CY74FCT2543ATSOCT. Confirm that alternative packages maintain identical pin configurations and electrical performance metrics before substitution.