CY74FCT2543CTSOC

Overview

The CY74FCT2543CTSOC is an octal registered bus transceiver manufactured by Texas Instruments, belonging to the FCT logic series. It features a single function with eight bits of data handling capability and true output polarity. The device utilizes a SOIC-24 surface-mount package and operates within a supply voltage range of 4.75 V to 5.25 V. It supports TTL input and output levels and provides three-state outputs. Key electrical specifications include a propagation delay of 5.5 ns, a low-level output current of 12 mA, and a high-level output current of -15 mA. The component is rated for operation between -40°C and +85°C.

Feature Summary

• Octal Registered Transceiver Functionality
• Three-State Output Capability
• TTL Compatible Input and Output Levels

Applications

• High-speed data bus buffering
• Memory interface registration
• System control signal latching

Procurement Notes

Verify the manufacturer designation carefully, as official documentation lists Texas Instruments as the producer for this specific part number despite the brand query referencing Cypress Semiconductor Corp. Confirm the SOIC-24 package type and ensure the required operating temperature range meets system specifications. Cross-reference the datasheet version to validate electrical parameters such as propagation delay and output drive strength before integration.

Selection Notes

Select this component when an octal registered transceiver with TTL compatibility is required for bus applications. The FCT series offers speed performance suitable for moderate-frequency digital systems. Ensure the design accommodates the specified 5V power supply constraints and thermal requirements for the industrial temperature range. Verify that the SOIC-24 footprint aligns with the PCB layout constraints.

Part Context

This device is part of the broader FCT logic family, which combines Fast CMOS technology with TTL compatibility. While Cypress Semiconductor produced various FCT components, this specific part number is documented under Texas Instruments manufacturing. It serves as a registered buffer for maintaining data integrity across bus structures in digital electronics.

Replacement Considerations

Consult official substitution guides for equivalent registered bus transceivers from Texas Instruments or other authorized manufacturers. Verify pinout compatibility and electrical parameter alignment before replacing the component.