CY74FCT399CTQCT

Overview

The CY74FCT399CTQCT is a quad 2-input multiplexer manufactured by Texas Instruments, belonging to the FCT logic series. It operates within a supply voltage range of 4.75 V to 5.25 V and features a propagation delay of 6.1 ns at 5 V. The device utilizes an SOIC-16 surface-mount package and supports a wide operating temperature range from -40°C to +85°C. Designed for high-speed data selection applications, it integrates four independent multiplexing circuits into a single component.

Feature Summary

• Integrates four independent 2-to-1 multiplexing channels for efficient data routing
• Provides fast signal switching with a propagation delay of 6.1 ns at 5 V
• Operates reliably across industrial temperature ranges from -40°C to +85°C

Applications

• Data selector circuits in embedded systems
• Signal routing in communication interfaces
• Address/data bus multiplexing in microcontroller designs

Procurement Notes

Verify the specific suffix CTQCT against official Texas Instruments documentation to confirm the exact tape-and-reel packaging configuration and moisture sensitivity level. Ensure compatibility with standard SOIC-16 footprints during PCB layout. Confirm RoHS compliance status through current manufacturer declarations before finalizing procurement orders.

Selection Notes

Select this component when multiple low-speed data paths require independent selection within a compact footprint. The FCT series offers CMOS input compatibility with TTL output levels, simplifying interface design. Consider the 6.1 ns delay and 4.75 V to 5.25 V operating window to ensure timing and power requirements are met in the target application environment.

Part Context

This part belongs to the CY74FCT family of high-speed CMOS logic devices produced by Texas Instruments. The FCT series is engineered for performance comparable to LS-TTL but with lower power consumption and higher noise immunity. The 399 variant specifically addresses multiplexing needs, providing a cost-effective solution for managing multiple data sources in digital logic applications.

Replacement Considerations

Consult official cross-reference guides for verified equivalents. Generic replacements may differ in pinout or electrical characteristics. Verify that any substitute maintains the same SOIC-16 package and FCT logic family specifications.