DRV8343-Q1: DRV8343-Q1 : VOL and VOH

Sreelekshmi Unnithan

Part Number: DRV8343-Q1

Hello,

We would like to know the output logic low voltage (VOL) and output logic high voltage (VOH) for the SDO (SPI Output data) pin of DRV8343. It is not mentioned in the datasheet.

Regards,

Sreelekshmi.

over 1 year ago

0 Andrew Liu over 1 year ago

TI__Mastermind 18916 points

Hi Sreelekshmi,

Since SDO is an output pin being driven by the DRV device itself, I believe that the H and L toggling of this signal will be as described below.

The push-pull configuration of this pin will mean DRV driven logic-low will target 0V and DRV driven logic-high will target the voltage set on the VSDO pin (either 5V or 3.3V)

Best Regards,
Andrew

0 Sreelekshmi Unnithan over 1 year ago in reply to Andrew Liu

Prodigy 110 points

Hi Andrew,

Thank you for the response. So, can we take VOHmax = 3.3V and VOLmin = 0V?

Regards

Sreelekshmi.

+1 Andrew Liu over 1 year ago in reply to Sreelekshmi Unnithan

TI__Mastermind 18916 points

Hi Sreelekshmi,

For expectation of what the DRV device will output - answer should be Yes for the values above.

For evaluation of what voltages the SDO pin can withstand & be biased externally, refer to 'absolute max ratings' datasheet section

note that 0 - 3.3V is a good range, since you'll be operating comfortably within the abs max range, allowing for safety margin to mitigate overshoot/undershoot transients

Best Regards,
Andrew

0 Sreelekshmi Unnithan over 1 year ago in reply to Andrew Liu

Prodigy 110 points

Hi Andrew,

Thankyou for the response.

Regards

Sreelekshmi.

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DRV8343-Q1: DRV8343-Q1 : VOL and VOH