Description
Galvanically Isolated I2C Module with Power and IRQ Isolation – ISO1541 + R1SE-0505 Based
This high-quality I2C isolator module provides full galvanic isolation for both I2C communication and power supply, making it ideal for complex and safety-critical applications. Built around the ISO1541 bidirectional isolator, it supports I2C clock speeds up to 1 MHz, ensuring fast and reliable data transfer even in demanding environments.
Unlike typical level shifters, this module does not perform voltage level conversion, but instead provides complete isolation between two I2C domains operating at the same voltage level (5V).
Key Features:
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Galvanic isolation of I2C signals (SDA, SCL) via ISO1541
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Supports I2C Standard (100 kHz), Fast (400 kHz), and Fast-mode Plus (1 MHz)
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Fully isolated 5V power rail using RECOM R1SE-0505 mini transformer
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Additional optocoupler-isolated IRQ line for transmitting interrupt signals across domains
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Compact, plug-and-play design
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Designed for 5V-to-5V isolated applications
Important Note:
This is not a level shifter. It is intended for systems where electrical isolation is required, not for bridging different logic voltage levels. Both sides must operate at 5V.
Typical Applications:
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Sensor systems requiring electrical isolation from the controller
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Ground loop elimination in multi-domain embedded systems
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Safe and isolated interrupt (IRQ) signaling via dedicated optocoupler
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Data acquisition systems with galvanically separated channels
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Industrial, lab, and educational use cases
Enhance your system’s reliability and safety with this precision-engineered I2C and power isolator module — perfect for any project where clean separation between circuits is essential.
