LTC4310IDD-1#TRPBF

Overview

The LTC4310IDD-1#TRPBF is a hot-swappable I2C isolator manufactured by Analog Devices Inc. It provides bidirectional communication between two isolated buses, specifically designed for 100kHz I2C systems. The device operates within a supply voltage range of 3V to 5.5V and features a maximum supply current of 8mA. It supports surface mount installation in a 10-pin DFN package with exposed pad. The component functions across an operating temperature range of -40°C to +85°C and includes a shutdown mode for power conservation.

Feature Summary

• Enables hot-swappable insertion or removal from a live bus without disrupting system operation
• Generates clock pulses and STOP bits to automatically recover stuck-low bus conditions
• Provides bidirectional data isolation between separate I2C domains

Applications

• Isolating I2C buses in industrial control systems
• Connecting sensors in automotive infotainment networks
• Protecting master controllers in avionics data acquisition

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration distinct from tube variants. Confirm that the IDD designation aligns with the required extended industrial temperature range specifications. Ensure compatibility with standard 100kHz I2C protocol timing requirements before finalizing procurement orders.

Selection Notes

Select this component when bidirectional isolation is required for 100kHz I2C applications. Consider the 10-pin DFN footprint for space-constrained designs. Evaluate the automatic bus recovery feature against manual reset alternatives. Compare power consumption in shutdown mode against system standby requirements.

Part Context

This part belongs to the LTC4310 series of hot-swap I2C isolators. It complements other interface protection devices by offering active bus recovery rather than passive blocking. The series addresses common failures where slave devices hold the bus low indefinitely.

Replacement Considerations

LTC4310IDD-1#PBF serves as the tube-packaged equivalent variant.