FST3126DTR2G

Overview

The FST3126DTR2G is a 4-bit bus switch manufactured by onsemi, belonging to the FST3126 series. It is housed in a 14-TSSOP surface-mount package with an exposed pad. The device operates as a digital bus switch IC designed for low-voltage applications. Key electrical parameters include a supply voltage range of 1.0 V to 3.6 V and a maximum on-resistance (Ron) of 5 ohms. The component supports bidirectional data transmission and features active pull-up/pull-down circuits to ensure defined logic states during power-off conditions.

Feature Summary

• Provides four independent bidirectional bus switches for signal routing
• Incorporates active pull-up and pull-down mechanisms to maintain stable logic levels when the device is unpowered
• Designed for low-voltage operation compatible with modern system architectures

Applications

• Portable equipment requiring low-power signal switching
• Consumer electronics utilizing low-voltage logic interfaces
• Computing systems needing efficient bus isolation and routing

Procurement Notes

Verify the specific suffix 'DTR2G' to confirm the tape-and-reel packaging configuration and RoHS compliance status. Ensure the procurement channel sources from authorized distributors to guarantee authenticity. Cross-reference the manufacturer part number with official datasheets to validate the pinout and thermal characteristics before finalizing orders.

Selection Notes

Select this component for designs requiring low on-resistance and minimal propagation delay in low-voltage environments. Verify that the operating supply voltage aligns with the 1.0 V to 3.6 V specification. Consider the 14-TSSOP package dimensions for PCB layout constraints and thermal management requirements relative to the application's power dissipation limits.

Part Context

This part belongs to the FST3126 family of high-speed bus switches from onsemi. These devices are engineered for high-performance data transfer in compact form factors. The series is characterized by its ability to handle multiple channels within a single package, offering space savings compared to discrete switching solutions while maintaining signal integrity across various logic families.

Replacement Considerations

Check for direct substitutes within the same FST3126 series or equivalent 4-bit bus switches from other manufacturers. Ensure compatibility regarding supply voltage ranges, package footprint, and electrical performance metrics such as Ron and propagation delay before substituting.