HD3SS3220: DIR pin external pull up

Tiger Yeh

Part Number: HD3SS3220

Hi~

Is it okay to use 1MOhm for DIR pin pull up?

Although the typical is 200K in the datasheet.

Any concern?

Thanks and Best regards,

Tiger

0 Brian Zhou over 6 years ago

it should be ok, it's open drain output

0 Tiger Yeh over 6 years ago in reply to Brian Zhou

Brian.

I think so, but I am a little concern because the pin description said it has to implement external pull up for proper operation.

In general, the open drain output is okay to floating if no use.

This is why I asked this question.

Thank you,

0 Brian Zhou over 6 years ago in reply to Tiger Yeh

open drain output normally need external pullup.

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