CD74FCT623M

Overview

The CD74FCT623M is an octal bus transceiver featuring BiCMOS technology and three-state outputs. It operates within a voltage range of 4.75 V to 5.25 V, with a maximum propagation delay of 5.3 ns at 5 V. The device provides non-inverting data transfer with input/output isolation from VCC. It draws a maximum quiescent current of 80 uA and supports TTL input levels. Packaged in a 20-SOIC format, it functions reliably across temperatures from 0°C to +70°C.

Feature Summary

• BiCMOS technology ensures low quiescent power consumption while maintaining high-speed performance.
• Input/output isolation from VCC protects internal circuitry and enhances signal integrity.
• Controlled output edge rates minimize electromagnetic interference during switching operations.

Applications

• High-speed data bus architectures requiring bidirectional transmission
• Memory buffer interfaces in computing systems
• I/O expansion modules for microprocessor-based designs

Procurement Notes

Verify the specific suffix (e.g., M) against the manufacturer's official ordering guide to confirm package type and temperature grade. Ensure compatibility with system voltage requirements before integration. Cross-reference datasheet revisions to confirm pinout consistency with existing PCB layouts.

Selection Notes

Select this component when designing systems requiring octal width with controlled slew rates. The BiCMOS process offers a balance between CMOS low power and bipolar speed. Verify that the 20-SOIC footprint matches the target assembly constraints and that the 5V logic level aligns with the host interface standards.

Part Context

This part belongs to the Texas Instruments FCT (Fast CMOS) family, designed for high-performance digital applications. It serves as a direct replacement for legacy LS/TTL equivalents while offering improved speed and lower power dissipation. The octal configuration simplifies wide-bus interfacing without requiring multiple discrete components.

Replacement Considerations

Check for CD74FCT623M96 or other suffix variants if different packaging or temperature ranges are required. Confirm functional equivalence with CD74FCT623T if tape-and-reel handling is needed. Verify that substitute parts maintain the same 20-SOIC pinout and electrical characteristics.