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LMV331: LMV331

Part Number: LMV331

I found  marking of  LMV331IDCKR   are marking "2RI"  whille Spec marking => R2F / R2K / R2R  

what's difference  of  2RI ?    I found old data sheet of TI  have  this marking in since 2015  also

what's develop of 2RI mean?  stil use  or it fake?