CD74FCT2543ATQM

Overview

The CD74FCT2543ATQM is a non-inverting bus transceiver from the FCT series, manufactured by Harris Corporation. It features an 8-bit configuration with three-state outputs and operates within a voltage range of 4.5V to 5.5V. The device utilizes CMOS technology and is housed in a 24-pin SSOP package. Key electrical characteristics include a load capacitance of 50 pF and a maximum output current of 64 mA. It supports bidirectional data transfer with direction control inputs.

Feature Summary

• Provides bidirectional data transmission capability for system buses
• Features three-state outputs to isolate the bus when disabled
• Includes direction control inputs for managing data flow
• Utilizes Schottky transistor-transistor logic for high-speed performance

Applications

• High-performance microprocessor systems
• Memory mapping applications
• Control lines for data acquisition systems

Procurement Notes

Verify component authenticity through authorized distributors or certified suppliers. Confirm RoHS compliance status as indicated in official documentation. Ensure storage conditions meet specified humidity sensitivity levels. Check for obsolescence notices from Harris Corporation or successor entities before finalizing procurement plans.

Selection Notes

Select this component for applications requiring fast switching speeds and low power consumption. Consider the 24-SSOP package for space-constrained designs. Verify voltage compatibility with the target system's 5V logic levels. Ensure adequate thermal management for continuous operation at elevated temperatures.

Part Context

This part belongs to the Harris Corporation FCT (Fast CMOS Technology) family, designed for high-speed digital applications. It serves as a bridge between different logic families, offering improved performance over standard TTL while maintaining CMOS power efficiency. The FCT series was widely used in computing and telecommunications equipment during its production lifecycle.

Replacement Considerations

Check for direct pin-compatible replacements from Harris Corporation successors such as Intersil or Renesas. Verify that alternative components maintain identical pinout configurations and electrical specifications. Ensure functional equivalence in terms of propagation delay and drive strength.