CY74FCT2646ATQCT-CY

Overview

The CY74FCT2646ATQCT is an octal registered bus transceiver from the FCT series, manufactured by Cypress Semiconductor. It features a single function with eight-bit true output capability in a CMOS technology package. The device utilizes a 24-pin PDSO (QSOP) form factor with a 0.150-inch body width. It operates within a temperature range of -40°C to +85°C and supports bidirectional data flow with independent direction control. The component includes registered outputs for stable signal transmission.

Feature Summary

• Provides registered bidirectional data transfer between two buses with independent direction control
• Features true output polarity for non-inverting signal transmission
• Utilizes CMOS technology for low power consumption and high noise immunity
• Integrates edge-triggered registration to stabilize data paths

Applications

• High-speed data bus interfaces requiring registered buffering
• Bidirectional memory bus architectures
• System-level data routing with controlled directionality
• Industrial control systems operating in extended temperature ranges

Procurement Notes

Verify the manufacturer designation as Cypress Semiconductor Corp or Texas Instruments, noting historical corporate transitions. Confirm the specific suffix 'CY' aligns with the requested QSOP-24 package variant. Ensure compliance with RoHS directives if required, as original specifications may indicate leaded status. Cross-reference the full part number against current distributor catalogs to confirm availability and exact pinout compatibility.

Selection Notes

Select this component when registered bidirectional data transfer is required for eight-bit wide buses. The independent direction control allows flexible data flow management without external logic. The CMOS construction offers advantages in power efficiency compared to older bipolar technologies. Ensure the application environment stays within the specified -40°C to +85°C operational temperature limits for reliable performance.

Part Context

This device belongs to the FCT (Fast CMOS Technology) logic family, designed for high-speed digital applications. It serves as a registered interface solution, combining the speed of FCT logic with the data storage capabilities of flip-flops. The octal configuration simplifies board layout for wide data buses, reducing component count compared to using multiple smaller transceivers.

Replacement Considerations

Check for direct equivalents such as the CY74FCT646ATQCT, which shares similar FCT characteristics but may differ in registration features. Verify pin-to-pin compatibility before substitution. Consider newer generations from Texas Instruments if Cypress legacy support is limited.