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CD4069UB: Is it original Texas IC?

Part Number: CD4069UB

We are having issues with this IC and in some boards it's locked on low level output when input is also low.

Power supply is 3.31 volts.

There is quite a few with this problem.

Could TI tell me something about this lot (IC picture below) 19JMAK4  G4?

Is it original?

Thanks.