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DRV8837: IN1 and IN2 logic voltages

Prodigy 90 points

Replies: 4

Views: 160

Part Number: DRV8837

hello,
i'm new in hardware development and i have some problems with the datasheet, so there we go
i'm designing a latching relay driver using DRV8837 and a single coil 3V latching relay, but the logic voltages mentioned in datasheet for IN1 and IN2 confuses me.
How can i find the maximum low voltage and the minimum high voltage for IN1 and IN2?
thanks for your help

ps. google translate helps me with this question, so ignore the mistakes

  • Daniel,

    Datasheet Page 5 "Absolute Maximum Ratings" and "Recommended Operating Conditions" shows IN1 and IN2 maximum voltage is 7V.

    Datasheet Page 6 "CONTROL INPUTS (IN1 or PH, IN2 or EN, nSLEEP)" gives the IN1 and IN2 logic high or low voltage threshold.

    "

    Best Regards,

    Wang Li

    Motor Drive Solutions

  • In reply to Wang5577:

    so, if i have Vcc = 3.3V my minimum high voltage is 3.3 * 0.46 = 1.51V and my maximum low voltage is 3.3 * 0.38 = 1.25V. Thats right?

  • In reply to Daniel Gasparini:

    0.46 or 0.38 are typical number.. Please use minimum voltage for VIL and maximum voltage for VIH

    Best Regards,

    Wang Li

    Motor Drive Solutions

  • In reply to Wang5577:

    ok, thank you very much!

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