FST3245WM

Overview

The FST3245WM is an octal bus switch manufactured by Fairchild Semiconductor. It features eight independent bidirectional switches configured as 1:1 data paths. The device operates within a supply voltage range of 4V to 5.5V and supports a temperature range of -40°C to 85°C. It is housed in a 20-pin SOIC package with a width of 7.50mm (0.295 inches). The component is RoHS compliant and lead-free.

Feature Summary

• Provides eight independent bidirectional switching paths for signal routing
• Operates at high speeds with low power consumption characteristics
• Features common control logic for synchronized switching of all channels

Applications

• High-speed data bus switching applications
• Portable battery-powered equipment requiring low power operation
• Consumer electronics utilizing compact surface-mount packaging

Procurement Notes

Verify the manufacturer marking on the component body to confirm Fairchild or ON Semiconductor origin, as ownership transitions occurred. Ensure the package code matches the 20-SOIC specification with the correct pin pitch. Check for RoHS compliance markings if environmental regulations apply to the end product. Confirm the suffix 'WM' corresponds to the specific tape-and-reel or tube packaging variant required for assembly.

Selection Notes

Select this component when an octal configuration is required for bidirectional data transfer between buses operating at 4V to 5.5V. The wide body SOIC-20 package facilitates automated surface-mount assembly. Consider the common control input architecture if simultaneous switching of all eight channels is necessary for system synchronization.

Part Context

This part belongs to the FST series of bus switches, designed for high-performance digital signal routing. It serves as a solution for managing data flow in systems where multiple buses need to be interconnected or isolated dynamically. The technology leverages advanced semiconductor processes to achieve speed and efficiency in a compact form factor.

Replacement Considerations

The DM74ALS245AWMX is a related bus transceiver from the same manufacturer but differs in series technology and package dimensions. Verify functional compatibility and electrical specifications before substitution, as interface requirements may vary.