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型號 / 廠家，封裝，批號，備注，訂購
SN74LS642NSR / ,,08/09+,全新原裝現(xiàn)貨庫存 訂購 PDF文檔
SN74LS643-1P / MIT,,08/09+,特價 訂購 PDF文檔
SN74LS643N / ,,08/09+,全新原裝深圳庫存 訂購 PDF文檔
SN74LS644-1N / UMC,DIP,08/09+,全新原裝深圳庫存 訂購 PDF文檔
SN74LS644-1P / MIT,,08/09+,特價 訂購 PDF文檔
SN74LS644N / UMC,DIP,08/09+,全新原裝深圳庫存 訂購 PDF文檔
SN74LS645 / UMC,DIP,08/09+,全新原裝深圳庫存 訂購 PDF文檔
SN74LS645-1DWE4 / Texas Instruments,Datasheet,07+,Octal bus transceive 訂購 PDF文檔