型號(hào) / 廠家，封裝，批號(hào)，備注，訂購(gòu)

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74S175FM / NSC,原廠原裝,08+07+,7到10天國(guó)際現(xiàn)貨 訂購(gòu) PDF文檔

74S181DC / Various,Datasheet,07+,4-Bit Arithmetic Log 訂購(gòu) PDF文檔

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74S181FC / Fairchild Semiconductor,Datasheet,07+,4-Bit Arithmetic Log 訂購(gòu) PDF文檔