型號 / 廠家，封裝，批號，備注，訂購

DM74S257 / Fairchild Semiconductor,Datasheet,06/07+,3-STATE Quad 1-of-2 訂購 PDF文檔

DM74S257CW / Fairchild Semiconductor,Datasheet,07+,Quad 3-STATE 2-to-1 訂購 PDF文檔

DM-74S257N. / ,,,原裝現(xiàn)貨 訂購 PDF文檔

DM74S270J / National Semiconductor,Datasheet,07+,General Purpose 訂購 PDF文檔

DM74S271J / National Semiconductor,Datasheet,07+,General Purpose 訂購 PDF文檔

DM74S271N / National Semiconductor,Datasheet,07+,General Purpose 訂購 PDF文檔

DM74S280N? / ,,最新批號,原裝現(xiàn)貨 訂購 PDF文檔

DM74S280WM / National Semiconductor,Datasheet,07+,9-Bit Parity Generat 訂購 PDF文檔

DM74S283 / Fairchild Semiconductor,Datasheet,07+,4-Bit Binary Adder w 訂購 PDF文檔

DM74S283N? / ,,最新批號,原裝現(xiàn)貨 訂購 PDF文檔