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型號(hào) / 廠家，封裝，批號(hào)，備注，訂購
SN7420 / TI,,08/09+,010-62106431 訂購 PDF文檔
SN74208NS12 / ,,08/09+,原裝全新現(xiàn)貨 訂購 PDF文檔
SN7420J / TI,陶瓷-14,08/09+,原裝特價(jià) 訂購 PDF文檔
SN74221J / ,,08/09+,原裝全新現(xiàn)貨 訂購 PDF文檔
SN74221N / ,,08/09+,原裝特價(jià) 訂購 PDF文檔
SN74221NE4 / ,PDIP,08/09+,010-62104891 訂購 PDF文檔
SN74221NSE4 / ,SOP,08/09+,010-62104891 訂購 PDF文檔
SN74221NSRE4 / ,SOP,08/09+,010-62104891 訂購 PDF文檔