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型號 / 廠家，封裝，批號，備注，訂購
DM74ALS253M_Q / ,,最新批號,現貨庫存 訂購 PDF文檔
DM74ALS253N_Q / ,,最新批號,最新供應 訂購 PDF文檔
DM74ALS257AM / ,,08/09+,全新原裝貨 訂購 PDF文檔
DM74ALS257M_Q / ,,最新批號,原裝現貨 訂購 PDF文檔
DM74ALS257MX / NATIONAL SEMICONDUCTOR,,08/09+,全新原裝深圳庫存 訂購 PDF文檔
DM74ALS257N / NATIONAL SEMICONDUCTOR,,08/09+,全新原裝深圳庫存 訂購 PDF文檔
DM74ALS257N_Q / ,,最新批號,原裝現貨 訂購 PDF文檔
DM74ALS257SJ / NATIONAL SEMICONDUCTOR,,08/09+,全新原裝深圳庫存 訂購 PDF文檔