FST3125DR2G

Overview

The FST3125DR2G is a quad bus switch manufactured by onsemi, housed in an SOIC-8 surface-mount package. It operates within a supply voltage range of 2V to 3.6V and supports data rates up to 400Mbps. The device features low on-resistance for minimal signal degradation and includes separate output enable inputs for each channel.

Feature Summary

• Provides four high-speed CMOS TTL-compatible bus switches
• Features low on-resistance to prevent propagation delay and ground bounce noise
• Supports independent control of each switch via separate output enable inputs

Applications

• Portable applications requiring low power consumption
• High-speed data lines and bidirectional translating buses
• Memory and card controllers

Procurement Notes

Verify the specific suffix DR2G against the manufacturer's official datasheet to confirm the SOIC-8 package and tape-and-reel packaging configuration. Ensure compliance with RoHS standards and check for any lead-free manufacturing declarations required by your assembly process specifications.

Selection Notes

Select this component when designing circuits that require bidirectional level translation or switching between two ports with minimal insertion loss. It is suitable for systems operating at 3.3V logic levels where low capacitance and fast switching speeds are critical for maintaining signal integrity.

Part Context

This part belongs to the FST (Fast Switching Technology) family from onsemi, designed for high-performance digital switching applications. It serves as a successor to older logic families, offering improved speed and lower power consumption while maintaining compatibility with standard TTL and CMOS logic interfaces.

Replacement Considerations

Compatible substitutes include the NXP 74CBTLV3125 and Fairchild FST3125MX. Verify pinout compatibility and electrical characteristics such as on-resistance and leakage current before substituting.