FST3345WM

Overview

The FST3345WM is an 8-bit bus switch manufactured by Fairchild Semiconductor. It provides high-speed CMOS TTL-compatible bus switching capabilities within a single package. The device features low on-resistance, allowing inputs to connect to outputs without adding propagation delay or generating additional ground bounce noise. It includes four independent switches connecting two ports and offers minimal propagation delay with low supply current.

Feature Summary

• Provides eight bits of high-speed CMOS TTL-compatible bus switching
• Features low on-resistance for minimal signal degradation
• Includes four independent switches between two ports
• Ensures zero bounce in flow-through mode

Applications

• High-speed data bus switching applications
• TTL-compatible logic interface circuits
• Portable battery-powered systems requiring low power consumption

Procurement Notes

Verify the specific suffix 'WM' against official Fairchild documentation to confirm exact packaging type and temperature range. Ensure compatibility with required voltage levels and check for RoHS compliance status as indicated in the final datasheet revision. Confirm pinout alignment with target PCB footprint before procurement.

Selection Notes

Select this component when designing circuits requiring fast, low-noise bidirectional data transfer between TTL-compatible buses. Consider its low on-resistance for maintaining signal integrity in high-frequency applications. Evaluate power consumption requirements as it is designed for low supply current operation suitable for portable devices.

Part Context

This part belongs to the FST series of bus switches from Fairchild Semiconductor. These components are designed to replace traditional logic gates in bus-oriented applications, offering faster switching speeds and lower power consumption compared to standard logic families. The series supports various packaging options for different board space constraints.