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ISO3080: 5V tolerant meaning and tradeoff

high speed guy
Expert 3205 points
Part Number: ISO3080

Hi,

I need to understand the meaning of 5V tolerant phrase in data sheet?  Also what is the trade off for using 5V?   I have a system where it will be designed for 5V operation.


Thank you,

HSG 

  • 0
    TI__Guru 54815 points

    Hi HSG,

    The meaning of 3.3V being 5V-tolerant is that the input pins on Side1 can withstand 5V when VCC1 is 3.3V. The inputs will withstand 5V and the device will be operational but please do note that the outputs on Side1 will only be able to output voltage as per the VOH spec (VCC1-0.4V) defined in datasheet.

    In customer application where MCU is operating at 5V, if the MCU accepts 3.3V inputs and then the 5V-tolerant inputs feature of ISO3080 will enable the device to be used in this application without any issues.

    Let me know if this answers your question, thank you.

    Regards,
    Koteshwar Rao