74FST3251DT

Overview

The onsemi 74FST3251DT is an 8:1 multiplexer/demultiplexer bus switch manufactured by ON Semiconductor. It operates within a voltage range of 4 to 5.5 Volts and maintains CMOS TTL compatibility. The device features extremely low R_ON characteristics and adds nearly zero propagation delay to the system. It is designed to add no noise or ground bounce during operation.

Feature Summary

• Functions as an 8:1 high-performance multiplexer and demultiplexer bus switch
• Maintains CMOS and TTL compatibility across specified operating voltages
• Exhibits extremely low on-resistance for efficient signal transmission
• Adds negligible propagation delay without introducing system noise or ground bounce

Applications

• High-speed data routing in digital systems
• Bus switching applications requiring minimal signal distortion
• Multiplexing and demultiplexing tasks in TTL-compatible environments

Procurement Notes

Verify the specific suffix DT corresponds to the TSSOP-16 package (CASE 948F) when sourcing. Confirm that the component is sourced directly from authorized distributors to ensure authenticity. Check current lifecycle status, as older logic families may face obsolescence. Ensure voltage requirements align with the 4V to 5.5V operational range before integration.

Selection Notes

Select this component for applications requiring fast switching speeds with minimal signal degradation. It is suitable for systems needing CMOS/TTL compatibility at higher supply voltages. Consider the TSSOP-16 package for space-constrained designs. Evaluate if the 8:1 configuration meets the specific routing needs compared to other FST series variants.

Part Context

This part belongs to the 74FST logic family, known for high-speed performance. It serves as a bus switch solution for managing multiple data lines. The device integrates multiplexer and demultiplexer functions into a single IC. It is designed for robust operation in digital communication interfaces.

Replacement Considerations

Check for direct pin-to-pin replacements within the same FST series. Verify functional equivalence regarding voltage ranges and package types. Consult official substitution guides for updated components if the original part is discontinued.