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MAX14850 short circuit between GNDB and I/OB2

Category: Hardware
Product Number: MAX14850

After a few days of operation I measured a short circuit between GNDB and I/OB2.

I unsoldered the part and measured between the Pins and it's definetely the IC and not the board.

To simplify the evaluation I used the same power source for both sides of the Isolator.

Is it allowed to have GNDA and GNDB on the same supply?

The part was supplied from 2 different LDO's and both sides with 3.3V.

Is there any power supply sequence that could cause such a problem?

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