CD74FCT640TM

Overview

The CD74FCT640TM is a Fast CMOS octal bus transceiver manufactured by Harris Corporation. It features non-inverting logic with three-state outputs, designed for high-speed data transmission. The device operates on a single supply voltage ranging from 4.75V to 5.25V. It utilizes a 20-SOIC surface-mount package and supports bidirectional data flow across eight channels. The component is rated for an operating temperature range of -55°C to 125°C.

Feature Summary

• Octal bidirectional bus transceiver architecture
• Non-inverting logic functionality
• Three-state output control capability

Applications

• High-speed data bus systems
• Memory module interfacing
• Microprocessor-based control circuits

Procurement Notes

Verify the manufacturer origin, as Harris Corporation assets were acquired. Confirm the specific suffix 'TM' corresponds to the 20-SOIC surface mount package. Check RoHS compliance status, as older Harris production may not meet current environmental standards. Ensure the supply voltage matches the 4.75V to 5.25V requirement for proper operation.

Selection Notes

Select this component when an octal, non-inverting transceiver with three-state outputs is required for 5V logic systems. It is suitable for applications needing high-speed data transfer between buses or memory devices. Consider the 20-SOIC package constraints for PCB layout. Verify compatibility with the system's voltage levels and thermal requirements before integration.

Part Context

This part belongs to the FCT (Fast CMOS Technology) series, optimized for speed and power efficiency in 5V applications. It serves as a critical interface component in digital systems requiring reliable data routing. The device complements other logic families by providing robust buffering and direction control for complex circuit designs.

Replacement Considerations

Check for equivalents from Texas Instruments or ON Semiconductor that match the FCT specification and 20-SOIC package. Ensure pin compatibility and electrical characteristics align with the original design requirements.