Part Number: ADS1258
We have ADS1258IRTCR as attached picture.
Please help us to figure out the date code. 
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Part Number: ADS1258
We have ADS1258IRTCR as attached picture.
Please help us to figure out the date code. 
Hi Sungwoo Go,
TI does not reveal date/lot code marking details because it is company proprietary information. Revealing the codes provides counterfeit semiconductor manufactures the ability to mark their devices with lot/date codes that could be legitimate. I hope this is understandable
If the ADS1258 was purchased directly from TI, or one of TI's authorized distributors, it should be legitimate TI product. However, I do not see that date code in our system.
Can you tell me where you purchased this device?
-Bryan