LTC4310CMS-1#PBF

Overview

The LTC4310CMS-1#PBF 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 supports insertion or removal from a live bus without disrupting operation. Key electrical parameters include a maximum supply voltage of 5.5V and a minimum of 3V. It operates with a typical supply current of 6.5mA and features a propagation delay of 170ns. The component offers an insulation voltage of 1500Vrms and utilizes both capacitive and magnetic coupling isolation types. It is housed in a 10-pin MSOP package.

Feature Summary

• Enables safe hot-swapping of I2C devices into or removed from a live bus
• Generates clock pulses and STOP bits to unstick a low bus condition
• Provides bidirectional data transfer across isolated boundaries
• Features low current shutdown mode for power conservation

Applications

• Hot-swappable I2C system integration
• Bidirectional I2C communication between isolated buses
• Industrial control systems requiring live bus insertion

Procurement Notes

Verify the specific suffix CMS-1 against the official Analog Devices datasheet to confirm the MSOP-10 package configuration. Confirm RoHS compliance status through the manufacturer's documentation. Check current availability as distribution channels may indicate limited stock or special order requirements. Ensure the part number matches the exact functional variant required for 100kHz I2C applications.

Selection Notes

Select this component when bidirectional I2C isolation is required for hot-swap scenarios. The 1500Vrms insulation rating suits applications needing robust galvanic separation. Consider the 170ns propagation delay for timing-sensitive designs. The MSOP-10 package is suitable for space-constrained surface-mount layouts. Verify that the 3V to 5.5V supply range aligns with the system power architecture.

Part Context

The LTC4310 series belongs to Analog Devices' portfolio of interface ICs focused on I2C isolation. This specific model addresses the challenge of connecting I2C peripherals while maintaining electrical isolation. It complements other isolators by adding hot-swap capability, allowing dynamic bus reconfiguration. The technology combines capacitive and magnetic coupling to ensure reliable signal transmission across the isolation barrier.

Replacement Considerations

Consult the Analog Devices product selector guide for direct substitutes within the LTC4310 family. Verify pin compatibility and isolation voltage ratings before swapping. Alternative models may differ in package type or operating temperature range. Cross-reference specifications to ensure functional equivalence in hot-swap applications.