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STUSB4500 - SCL and SDA really pulled low when none of VDD or VSYS is present?

KVerb.1
Associate II

‎2023-01-24 07:23 AM

According to the datasheet, this is what would happen if no VDD or VSYS is present. This seems like odd behaviour for an open drain output. This also does no correspond to what I'm measuring on the board. Any insights?

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2 REPLIES 2
KVerb.1
Associate II

‎2023-01-24 07:36 AM

Minor clarification: I don't measure this behaviour, but I'm a bit reluctant to simply ignore the warning without some background..

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KVerb.1
Associate II

‎2023-02-28 12:06 AM

Just wondering if anyone had any input on this?

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