FSTUD162450MTD

Overview

The FSTUD162450MTD is a configurable bus switch from Fairchild Semiconductor, featuring a 10:1 architecture in a 56-TSSOP package. It supports signal widths from 4-bit to 20-bit with selectable level shifting and -2V undershoot protection. The device operates on a single supply voltage ranging from 4V to 5.5V and includes 25 Ohm series resistors in the outputs. It is designed for high-speed CMOS and TTL-compatible applications within an operating temperature range of -40°C to 85°C.

Feature Summary

• Configurable bus switching capability supporting variable bit widths from 4-bit up to 20-bit
• Integrated -2V undershoot protection for enhanced signal integrity
• Selectable level shifting functionality for versatile interface compatibility
• Built-in 25 Ohm series output resistors to manage signal reflections

Applications

• High-speed data bus switching in consumer electronics
• Level shifting between different logic families in industrial systems
• Signal routing in telecommunications equipment
• Interface adaptation in automotive electronic control units

Procurement Notes

Verify the specific suffix 'MTD' corresponds to the required tape-and-reel packaging configuration as defined by Fairchild Semiconductor documentation. Confirm that the 56-TSSOP footprint matches your PCB design constraints. Ensure the supply voltage requirements align with your system's 4V to 5.5V operational window before procurement.

Selection Notes

Select this component when a configurable bus width up to 20 bits is required alongside integrated level shifting capabilities. The inclusion of undershoot protection makes it suitable for noisy environments or interfaces with varying voltage levels. Consider the 56-TSSOP package size relative to available board space and thermal management requirements for high-density designs.

Part Context

This part belongs to the FSTUD universal bus switch family, which provides flexible signal routing solutions. The FSTUD162450 variant specifically addresses applications needing wide bus configurations without external multiplexers. It bridges the gap between simple switches and complex muxes, offering a compact solution for signal path management in mixed-signal systems.

Replacement Considerations

Check for direct pin-to-pin replacements within the FSTUD series with similar bit counts. Verify if alternative packages like TQFN are available for the same electrical specifications if footprint changes are permissible. Ensure any substitute maintains the 4V-5.5V supply range and undershoot protection features.