型号 / 厂家，封装，批号，备注，订购

74LS283FC / Various,Datasheet,07+,4-Bit Parallel Full 订购 PDF文档

74LS283J / Raytheon Electronics,Datasheet,07+,4-Bit Parallel Full 订购 PDF文档

74LS289DC / Various,Datasheet,07+,General-Purpose Stat 订购 PDF文档

74LS289FC / Various,Datasheet,07+,General-Purpose Stat 订购 PDF文档

74LS289PC / Various,Datasheet,07+,General-Purpose Stat 订购 PDF文档

74LS28FC / Fairchild Semiconductor,Datasheet,07+,NOR-Function Buffer 订购 PDF文档

74LS251W / Raytheon Electronics,Datasheet,07+,8-Line Digital Multi 订购 PDF文档

74LS253FC / Various,Datasheet,07+,4-Line Digital Multi 订购 PDF文档

74LS255W / Raytheon Electronics,Datasheet,07+,4-Line Digital Demul 订购 PDF文档

74LS256DC / Various,Datasheet,07+,Dual 4-Bit D-Type La 订购 PDF文档