TXS0102: TXS0102DCTR part marking

Part Number: TXS0102

Tool/software:

Hello - we have been updating our database and have noticed that our system calls out the following device marking in relation to part TXS0102DCTR   -    'NFE'

We also have records of the part with 35UT as the device marking for this part, and also note that the datasheet shows both 'NFE' and '35UT' as interchangeable device markings. 

Is there a difference between parts marked with '35UT' or 'NFE' - or was this device changed at some point?

Thank you

Craig Earl