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DRV8412: PWMx High Level Input Voltage

haras nosregor
Prodigy 90 points
Part Number: DRV8412

Tool/software:

I am using a microcontroller with 0 to 3.3V digital outputs to control the PWMA-D lines on the DRV8412. I noticed in the DRV8412 datasheet that the maximum high-level input voltage is 3.6V. Does this mean that 3.3V may not be a high enough input voltage for the DRV8412 to register it as logic high? Am I reading this incorrectly?

  • +1
    TI__Mastermind 35405 points

    Hi Haras,

    The VIH MIN for the PWM inputs is 2V and MAX is 3.6V. PWM input voltage > 2V will be considered as a logic HIGH. So 3.3V input for HIGH is good. The input must not not exceed the MAX value 3.6V. Likewise for logic LOW, MAX is 0.8V. So between 0 to 0.8V PWM input voltage will be considered as logic LOW, 

    Regards, Murugavel