型號(hào) / 廠家，封裝，批號(hào)，備注，訂購(gòu)

SN74ALS520NSR / ,SOP,08/09+,010-62104891 訂購(gòu) PDF文檔

SN74ALS521AMS / ,,08/09+,原裝全新現(xiàn)貨 訂購(gòu) PDF文檔

SN74ALS521DW / TEXAS INSTRUMENTS,,08/09+,全新原裝深圳庫(kù)存 訂購(gòu) PDF文檔

SN74ALS521DWR / TEXAS INSTRUMENTS,,08/09+,全新原裝深圳庫(kù)存 訂購(gòu) PDF文檔

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SN74ALS522N / ,,08/09+,庫(kù)存原裝特價(jià) 訂購(gòu) PDF文檔