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What is differnce between photocouple and digital isolator?

Ray Chang
Intellectual 1345 points

What is differnce between photocouple and digital isolator?

speed?

isolation?

powr consumption?

  • 0
    TI__Genius 14015 points

    Hi Ray,

    The advantages of digital isolators are that they can be higher speed, longer lifetime, and higher CMTI (common-mode transient immunity) than optocouplers. 

    Optocouplers typically have high input currents and their performance varies more over temperature than digital isolators. 

    I hope this helps. Let me know if you need anything else!

    Thanks,
    Jason Blackman