CY74FCT2543ATSOCT

Overview

The CY74FCT2543ATSOCT is an octal registered bus transceiver from the Texas Instruments FCT logic series. It features true, non-inverting outputs with three-state capability and integrated series damping resistors for signal integrity. The device operates on a single 5V supply within a voltage range of 4.75V to 5.25V. It utilizes TTL-compatible input and output levels, ensuring compatibility with standard digital systems. Packaged in a 24-pin SOIC format, it supports surface-mount assembly and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates eight bidirectional data paths with internal latching registers for data storage during transmission.
• Includes built-in series damping resistors to minimize signal reflections and improve waveform quality on high-speed buses.
• Provides independent direction control and separate output enable signals for each transceiver direction.

Applications

• High-density memory buffer applications requiring registered data storage.
• Clock drivers and buffered clock distribution networks.
• Control signal routing and management in complex digital systems.

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm that the manufacturer designation aligns with Texas Instruments specifications, as Cypress Semiconductor previously produced this part number under similar designations. Ensure the order quantity matches the reel size requirements for automated surface-mount placement processes.

Selection Notes

Select this component when application requirements demand both bus transceiving functionality and data registration within a single package. The inclusion of series damping resistors makes it suitable for PCB layouts where trace impedance matching is critical without external components. Consider the 24-SOIC package dimensions for board space constraints compared to through-hole alternatives.

Part Context

This part belongs to the broader 74FCT family of high-speed CMOS logic devices. While originally developed by Cypress Semiconductor, the product line was acquired by Texas Instruments, which now manages production and datasheet documentation. The device serves as a registered variant within the FCT transceiver portfolio, offering enhanced data handling capabilities compared to unregistered counterparts.

Replacement Considerations

The CY74FCT2543ATSOC is a verified tube-packaged equivalent with identical electrical characteristics. Designers may substitute the ATSOCT variant with the ATSOC version if reel packaging is not strictly required for the assembly process.