LTC4310IMS-1#PBF

Overview

The LTC4310IMS-1#PBF is a hot-swappable I2C isolator manufactured by Analog Devices Inc. It provides bidirectional communication between two isolated buses, supporting standard and fast-mode I2C protocols up to 400 kb/s. The device operates within a supply voltage range of 3 V to 5.5 V and draws a typical operating current of 6.5 mA. It features an insulation voltage of 1500 Vrms and utilizes both capacitive and magnetic coupling for isolation. The component is housed in a 10-lead MSOP package with a propagation delay of 170 ns.

Feature Summary

• Enables safe hot-swapping of I2C devices into or removed from a live bus without disrupting existing communications.
• Integrates automatic bus recovery mechanisms that generate clock pulses and stop bits to unstick a low-bus condition.
• Provides high noise immunity through combined capacitive and magnetic coupling isolation technologies.

Applications

• Isolating I2C buses in systems requiring frequent module insertion or removal.
• Protecting sensitive control logic from electrical faults on external peripheral buses.
• Implementing secure communication channels across different ground potential domains.

Procurement Notes

Verify the specific suffix and package type against official Analog Devices documentation to ensure compatibility with your design requirements. Confirm availability status as distribution channels may report limited stock or discontinuation notices. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before finalizing procurement decisions.

Selection Notes

Select this component when bidirectional I2C isolation is required alongside hot-swap capability. Ensure the system voltage aligns with the 3 V to 5.5 V operating range. Consider the MSOP-10 footprint constraints during PCB layout. Verify that the 1500 Vrms isolation rating meets the safety standards of your target application environment.

Part Context

This part belongs to the LTC4310 series of hot-swappable I2C isolators designed by Analog Devices. It serves as a bridge between isolated domains, allowing safe interaction with peripherals connected to active buses. The series addresses common issues such as bus contention and stuck-low conditions inherent in multi-master I2C environments.

Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Do not assume functional equivalence with other interface ICs without reviewing specific datasheet parameters and pin configurations.