CY74FCT399ATSOCT

Overview

The CY74FCT399ATSOCT is a quadruple 2-input multiplexer with storage, belonging to the FCT logic series. It features four independent data selectors, each capable of routing one of two input lines to a single output based on select signals. The device includes internal storage registers to maintain selected data states. It operates within a supply voltage range of 4.75 V to 5.25 V and exhibits a propagation delay of 6.1 ns at 5 V. The component is housed in a 16-pin SOIC (DW) package and supports surface mount installation. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates four independent 2-to-1 multiplexing channels with dedicated storage registers for data retention.
• Provides high-speed signal selection with low propagation delay characteristics suitable for fast digital systems.
• Features three-state outputs allowing direct connection to system buses without external pull-up or pull-down resistors.

Applications

• Data routing in high-speed digital communication interfaces
• Address/data bus switching in microprocessor-based systems
• Signal selection in test and measurement equipment

Procurement Notes

Verify the specific suffix 'CT' against the manufacturer's official documentation to confirm tape-and-reel packaging and lead finish specifications. Ensure the operating environment remains within the specified -40°C to +85°C temperature range. Confirm that the 5V supply voltage tolerance aligns with the target circuit design requirements before finalizing procurement.

Selection Notes

Select this component when multiple independent 2-input signal paths require simultaneous selection and storage capabilities. The FCT series offers compatibility with standard TTL logic levels while providing CMOS performance benefits. Consider the 16-pin SOIC package constraints for PCB layout and ensure adequate thermal management for the intended application density.

Part Context

This part belongs to Texas Instruments' CY74FCT399T family of quad multiplexers with storage. It serves as a functional equivalent to other industry-standard quad 2-input muxes but utilizes Fast CMOS technology for improved speed and power efficiency. The device is designed for applications requiring reliable data path switching in industrial and commercial environments.

Replacement Considerations

Check for CY74FCT399ATSOC as a tube-packaged alternative within the same family. Verify pinout compatibility and electrical parameters against any third-party equivalents to ensure seamless integration without redesigning the host circuit board.