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AM5729: IC TOP MARKING

Part Number: AM5729

The part is received is AM5729BABCXEA .

Its top marking is as per datasheet is below:

AM5729BABCXEA
842
842 ABC

But in the IC received, the top marking is 

AM5729BABCXEA
21P1SWS
842 ABC

Is it correct? Is it ok to use?