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AJMRTC ISO1540 Bidirectional I2C Isolator Module, 2500V-RMS Isolation Separator, Capacitive Isolation, Support Clock Stretching for Arduino ESP32 Industrial Sensor I2C Bus
- 1. ISO1540 chip, fully bidirectional I2C isolation for both SDA and SCL lines
- 2. 2500V-RMS isolation rating, blocks high voltage and ground loop noise
- 3. Supports clock stretching, ideal for multi-controller I2C bus systems
- 4. 3V ~ 5.5V wide supply voltage, compatible with 3.3V and 5V MCU logic
- 5. High common-mode transient immunity, stable communication in noisy industrial environments
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Overview
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AJMRTC ISO1540 I2C isolation separator adopts TI capacitive isolation technology. It provides galvanic isolation between host side and sensor side to eliminate ground loop interference and protect low-voltage MCU from high voltage surge. Both SDA and SCL channels are bidirectional and support clock stretching, which cannot be achieved by ordinary digital isolators. It works up to 1MHz I2C speed, fits long-distance I2C wiring, industrial sensors, PLC peripheral expansion and battery monitoring systems. It is widely used with Arduino, ESP32, STM32 and other microcontrollers. Isolated power supply is required for both sides of the module.
Specifications
- Model: ISO1540
- Function: Bidirectional I2C isolator
- Isolation Voltage: 2500V-RMS
- Max Communication Speed: 1MHz
- Supply Voltage: 3.0V ~ 5.5V
- Channel: 2 bidirectional channels (SDA, SCL)
- Feature: Support clock stretching, capacitive isolation
- CMTI: ±50kV/µs typical
- Operating Temperature: -40 ~ +125
- Application: Industrial I2C bus, sensor isolation, ground loop suppression
- Compatible: Arduino, ESP32, STM32, Raspberry Pi, I2C sensors
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
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