型號 / 廠家，封裝，批號，備注，訂購

74LS189PC / Fairchild Semiconductor,Datasheet,07+,64-BIT RANDOM ACCESS 訂購 PDF文檔

74LS190FC / Various,Datasheet,07+,BCD-Output Decade Up 訂購 PDF文檔

74LS190W / Raytheon Electronics,Datasheet,07+,BCD-Output Decade Up 訂購 PDF文檔

74LS191BP / HIT,,,絕對自己庫存貨 訂購 PDF文檔

74LS190J / Raytheon Electronics,Datasheet,07+,BCD-Output Decade Up 訂購 PDF文檔

74LS191DR / TI,3.9mm,00+,0755-83980010 訂購 PDF文檔

74LS191FC / Various,Datasheet,07+,4-Bit Binary Up-Down 訂購 PDF文檔

74LS191NA / ,,最新批號,原裝現(xiàn)貨 訂購 PDF文檔

74LS192DC / Various,Datasheet,07+,BCD-Output Decade Up 訂購 PDF文檔

74LS191J / Raytheon Electronics,Datasheet,07+,4-Bit Binary Up-Down 訂購 PDF文檔