I2C 數字隔離器

Low Power, 3.0kV rms/5.0 kV rms

π220N31/π221N31: AC 3000Vrms;π220N61/π221N61: AC 5000Vrms




    The π220N31/π221N31 devices arelow-power bidirectional isolators compatible with the I2C interfaceand are based on iDivider technology from 2PaiSemi. These devices have logicinput and output buffers that are separated by using a silicon dioxide (SiO2)barrier. These devices block high voltages and prevent noise currents fromentering the control side ground, avoiding circuit interference and damagingsensitive components.

    The π220N31/π221N31devices are based on iDivider technology with functional, performance, size,and power consumption advantages as compared to optocouplers.

    The π220N31 providestwo bidirectional channels, supporting a complete isolated I2Cinterface. The π221N31 provides one bidirectional channel and oneunidirectional channel for applica- tions where a bidirectional clock is notrequired. The π221N31 is used in applications that have a single master while the π220N31 is suitable formulti-master applications.

    These devices feature independent 3.0V to 5.5V supplieson each side of the isolator. These devices operate from DC to 2MHz at ambienttemperatures of -40°C to +125°C.


    Bidirectional I2C communication

    Supports upto 2 MHz operation


    Side 1 outputs with 3.5 mA sink current

    Side 2 outputs with 35 mA sink current

    3.0V to 5.5V supply/logic levels

    High common-mode transient immunity: 75 kV/μs typical

    Safetyand regulatory approvals(Pending)

    UL recognition:

    3000Vrms for 1 minute per UL 1577

    CSAComponent Acceptance Notice 5A

    VDE certificate of conformity:

    DIN V VDE V0884-10 (VDE V 0884-10):2006-12

    VIORM = 707V peak

    CQCcertification per GB4943.1-2011

    AEC-Q100 (Pending)

    Wide temperature range: -40°C to125°C

    8-lead, RoHS-compliant, SOICpackage


    Isolated I2C, SMBus,PMBus interfaces

    Multilevel I2C interfaces

    Electric and Hybrid-ElectricVehicles

    Open-Drain Networks

    I2C Level Shifting

    Power supplies


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