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INA260: INA260 I2C address not responding to mapped address

hilal a
Prodigy 140 points
Part Number: INA260

We are using INA260AIPWR in our design , with following configuration. We had produced 3K units with out any issues 

Everything was working fine with  address 80 81  & 8A & 8B.

In our recent batch production  80  address we are not getting response , instead we are getting 88 even though all the A1 & A0 pin are grounded .

Working  IC top marking                                                                                                    Non working Top marking