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SN65HVS880: Logic input treshold level

user6109733
Prodigy 90 points
Part Number: SN65HVS880

I need directly connect SN65HVS88x to 3.3V powered microcontroller with 5V tolerant inputs. Will the CE,CLK, LD, SIP inputs of the SN65HVS88x accept 3.3V logic signals? I cannot find logic input treshold levels for these pins in the datasheet.

  • 0
    TI__Expert 5660 points

    Hello,

    Thank you for reaching out.

    The CE, CLK, LD, SIP logic input pins will accept 3.3V logic signals.

    The Recommended Operating Conditions table on page 4 of the datasheet shows the logic inputs will accept 0-0.8V as a low state and 2-5.5V as a high state.

    According to standard 3.3V logic levels, the minimum high output (VOH) is 2.4V, which is within the range of VIH of SN65HVS88x. The maximum low output (VOL) is 0.4V, which is within the range of VIL of SN65HVS88x. Please double check that your microcontroller follows these standard threshold values.

    Regards,

    Kate

  • 0 in reply to Kate Dickson
    TI__Expert 5660 points

    Hello,

    Just checking in that your question was answered. I am marking the case resolved, but please don't hesitate to reach out if you have any more questions!

    Regards,

    Kate