FST3345MTCX

Overview

The FST3345MTCX is an 8-bit bus switch manufactured by Fairchild Semiconductor, housed in a 20-TSSOP package. It provides high-speed CMOS TTL-compatible switching with minimal propagation delay and low ground bounce noise. The device features four independent switches connecting two ports, ensuring zero bounce in flow-through mode. Control inputs are compatible with TTL levels, and the low on-resistance allows direct connection of inputs to outputs without adding significant signal degradation.

Feature Summary

• Provides eight bits of high-speed CMOS TTL-compatible bus switching capability
• Features minimal propagation delay through the switch for high-speed data integrity
• Ensures zero bounce operation in flow-through mode for reliable signal transmission

Applications

• High-speed data bus switching applications requiring low latency
• Systems utilizing TTL-compatible control logic for interface management
• Circuits demanding low ground bounce noise during signal transitions

Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor, noting that ON Semiconductor acquired Fairchild's logic business. Confirm the specific suffix MTCX corresponds to the 20-TSSOP surface-mount package. Ensure compatibility with existing TTL control levels and check for any RoHS compliance updates due to corporate restructuring history.

Selection Notes

Select this component when an 8-bit bidirectional bus switch is required with TTL-compatible control inputs. It is suitable for applications needing low on-resistance and minimal signal distortion. Consider the 20-TSSOP package constraints for PCB layout. Verify that the operating voltage range aligns with the system's power supply specifications before integration.

Part Context

This part belongs to the FST series of bus switches, designed for high-performance digital interfaces. It serves as a bridge between different logic families or segments of a data bus. The device is engineered to maintain signal integrity while providing flexible connectivity options in complex electronic systems.

Replacement Considerations

The FST3345QSC is a documented equivalent from Fairchild Semiconductor offering identical functionality. Other variants within the FST3345 family may provide similar performance with different packaging options.