SN74AHCT541: The issue of font and style differences printed on the chip surface

Part Number: SN74AHCT541


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Regarding this chip SN74AHCT541, we have received two batches of goods.

However, the printing style on the front of the chip is completely different. Is there a PCN change? What caused it?

2. The style on the back is also different. Is there a PCN change? What caused it?