74FST3257MN2TWG

Overview

The onsemi 74FST3257MN2TWG is a quad 2:1 multiplexer/demultiplexer bus switch belonging to the 74FST logic family. It operates with CMOS and TTL compatibility within a supply voltage range of 4V to 5.5V. The device integrates four independent switches, each capable of routing one of two inputs to a common output or functioning as a demultiplexer. It utilizes an SC-88 package configuration for surface-mount installation.

Feature Summary

• Provides four independent bidirectional data paths for signal routing
• Ensures high-speed switching performance suitable for bus applications
• Maintains compatibility with standard CMOS and TTL logic levels

Applications

• Data bus switching in computer systems
• Signal routing in telecommunications equipment
• Multiplexing functions in industrial control interfaces

Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm package integrity and pin alignment against official datasheet specifications. Ensure storage conditions prevent moisture damage prior to soldering. Review latest manufacturer notices for any final assembly guidelines or handling restrictions associated with discontinued inventory batches.

Selection Notes

Select this component when designing circuits requiring multiple independent signal paths within a compact footprint. Verify that the operating voltage aligns with the 4V to 5.5V specification. Consider the SC-88 package dimensions for PCB layout constraints. Evaluate thermal requirements based on expected load currents and ambient operating temperatures defined in the technical documentation.

Part Context

This part belongs to the 74FST series of high-performance bus switches manufactured by onsemi. The series is designed for applications demanding fast switching speeds and low power consumption. The specific model indicates a quad configuration with multiplexer functionality, distinguishing it from single or dual-channel variants within the same logical family.

Replacement Considerations

The manufacturer has scheduled this component for obsolescence. Designers should identify alternative parts from current production lines that match the functional specifications and pinout compatibility. Cross-reference electrical characteristics and package dimensions to ensure seamless integration into existing designs without modification.