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SN74HC08: SN74HC08DR

Part Number: SN74HC08

Dear Sir,

I found that there are two kinds of REV for SN74HC08DR label, one is for F and the other is B.May i ask if ther are uesd the same?in addition,I also found that the corresponding origin of these two versions is different.One is Mexico and the other is Malaysia.

Please check and help answer.Thanks very much!