FSTU3384WM

Overview

The FSTU3384WM is a 10-bit high-speed CMOS TTL-compatible bus switch manufactured by Fairchild Semiconductor. It features low on-resistance for efficient signal transmission and includes -2V undershoot hardened circuit (UHC) protection to enhance reliability under adverse voltage conditions. The device operates on a single supply voltage ranging from 4 V to 5.5 V, making it suitable for various digital interface applications requiring robust switching capabilities.

Feature Summary

• Provides 10 bits of high-speed CMOS bus switching with TTL compatibility
• Incorporates -2V undershoot hardened circuit (UHC) protection for enhanced durability
• Features low on-resistance to minimize signal loss during transmission

Applications

• High-speed data bus switching in digital systems
• TTL-compatible interface circuits requiring robust signal integrity
• Applications subject to voltage undershoot conditions

Procurement Notes

Verify the manufacturer origin, as ON Semiconductor acquired Fairchild's semiconductor business. Confirm the package type is SOIC-24 and check RoHS compliance status. Ensure the part number suffix matches the specific variant required for your design, as different suffixes may indicate variations in tape-and-reel packaging or temperature ratings.

Selection Notes

Select this component when designing circuits that require 10-bit parallel bus switching with TTL logic levels. The UHC feature is critical if the application environment experiences significant voltage undershoots. Ensure the operating voltage range of 4 V to 5.5 V aligns with your system's power supply constraints before finalizing the selection.

Part Context

This component belongs to the FST series of bus switches, designed for high-speed digital applications. The 'U' in the model name typically denotes the inclusion of Undershoot Hardened Circuit technology, distinguishing it from standard variants like the FST3384. It serves as a key interface element in systems needing reliable multi-bit signal routing.

Replacement Considerations

The FST3384WMX is a comparable variant within the same family but lacks the specific UHC protection features documented for the FSTU3384WM. Verify functional equivalence regarding undershoot tolerance before substitution.