IC快速检索：
型号 / 厂家，封装，批号，备注，订购
74LS540FC / Various,Datasheet,07+,Inverting-Function B 订购 PDF文档
74LS541PC / Various,Datasheet,07+,Non-Inverting-Functi 订购 PDF文档
74LS55DC / Various,Datasheet,07+,4-4-Input AND-OR-INV 订购 PDF文档
74LS55SC / NSC,原厂原装,08+07+,7到10天国际现货 订购 PDF文档
74LS55W / Raytheon Electronics,Datasheet,07+,4-4-Input AND-OR-INV 订购 PDF文档
74LS568PC / Fairchild Semiconductor,Datasheet,07+,BCD-Output Decade Up 订购 PDF文档
74LS569PC / Fairchild Semiconductor,Datasheet,07+,4-Bit Binary Up-Down 订购 PDF文档
74LS574DC / Various,Datasheet,07+,Octal D-Type Flip-Fl 订购 PDF文档