ISO1540 Bidirectional I2C Isolator Module Key benefits — why you need it Protects controllers and sensors by isolating voltage domains between I2C buses, preventing damage from mismatched grounds or transient voltages and improving system reliability. Maintains native I2C operation and timing while isolating signals, so you do not need protocol changes or custom drivers. Low power design reduces added energy draw in battery or powerconstrained systems. What it does Provides galvanic voltage isolation while transparently passing bidirectional I2C signals between two bus segments. Supports standard I2C protocol operation up to 1 MHz for fast communication and clock stretching compatibility. Built as a compact PCBmounted module using durable PCB materials to withstand industrial environments. Standout attributes Model: ISO1540 — proven bidirectional isolator functionality for I2C networks. Performance: bidirectional signal transmission up to 1 MHz. Compatibility: plugandplay with standard I2C masters and peripherals; no firmware changes required. Efficiency: engineered for low power consumption, minimizing impact on overall system power budgets. Construction: PCBbased module designed for reliable performance in harsh conditions typical of industrial use. Typical applications and scenarios PLC and factory automation: isolate sensors or remote I2C modules from PLC power domains to prevent ground loops and reduce noise impact on data acquisition and control signals. Distributed sensor networks: connect remote sensor clusters to a central I2C master across different voltage domains while preserving signal integrity and device safety. Laboratory and IoT equipment: protect test instruments and connected devices when integrating modules from different power sources or when isolating measurement circuitry to reduce interference. Who it's for Industrial automation engineers, embedded systems developers, and electronics designers who need secure, standardcompatible I2C communication across isolated voltage domains in PLCs, sensor networks, lab devices, or IoT systems. Practical notes Designed for straightforward integration into existing I2C systems; the module as a bus bridge between two isolated domains. Use where stable I2C communication and reliable electrical isolation are required for data acquisition, control, or safety reasons.