DAC8562: About logic input high voltage

Lifeng Hao

Part Number: DAC8562

Hello,

I have a question about the logic input high voltage(VIH) of dac8562. It is mentioned in the datasheet that the minimum of VIH should be 0.7xAVdd. So if AVdd = 5V, minimum of VIH should be greater than 3.5V. Does that mean 3.3V signal can not be used to drive the logic input?

Many thanks!

over 3 years ago

0 Akhilesh K over 3 years ago

TI__Mastermind 18546 points

Hi,

I believe there is a mistake in the datasheet. Device can accept any logic levels between 1.8V to AVDD I guess. I will check with design team for confirmation.

Regards,

0 Akhilesh K over 3 years ago in reply to Akhilesh K

TI__Mastermind 18546 points

Hi,

If your VDD is above 4.5V, then 3.3V logic wont work. You need to use level translator for the same.

Regards,

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DAC8562: About logic input high voltage