CY74FCT2574CTQCT

Overview

The CY74FCT2574CTQCT is an octal bus transceiver manufactured by Texas Instruments within the FCT logic series. It features eight D-type registers with three-state outputs, housed in a QSOP-20 surface-mount package. The device operates on a single supply voltage ranging from 4.75 V to 5.25 V and supports non-inverting input polarity. Key electrical characteristics include a propagation delay of 6.5 ns, a high-level output current of -15 mA, and a low-level output current of 12 mA. It functions as a single circuit with TTL-compatible inputs and is rated for an operating temperature range between -40°C and +85°C.

Feature Summary

• Octal D-type register architecture providing eight independent data storage channels
• Three-state output capability enabling efficient bus sharing and system integration
• TTL-compatible input interface ensuring compatibility with standard logic families

Applications

• High-speed data buffering in computer systems
• Clock drivers and buffered oscillators
• Bus-oriented memory and signal switching applications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure packaging integrity matches specified reel or cut tape formats. Cross-reference datasheet revisions to confirm pinout and electrical specifications align with design requirements before final procurement decisions.

Selection Notes

Select this component when designing systems requiring octal data latching with bus isolation capabilities. The FCT series offers speed advantages over standard 74LS logic while maintaining CMOS power efficiency. Consider the QSOP-20 package constraints for PCB layout. Verify that the 4.75V to 5.25V supply range matches the target system voltage rails and that the 6.5ns propagation delay meets timing constraints.

Part Context

This part belongs to the Texas Instruments CY74FCT family, which combines the speed of bipolar logic with the low power consumption of CMOS technology. The FCT series is widely used in high-performance digital systems where fast switching speeds and noise immunity are critical. The specific model integrates octal registration with three-state control, distinguishing it from simpler buffer or latch variants within the broader logic IC portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided documentation.