型号 / 厂家，封装，批号，备注，订购

DM54LS47 / National Semiconductor,Datasheet,07+,BCD to 7-Segment Dec 订购 PDF文档

DM54LS471 / National Semiconductor,Datasheet,07+,(256 X 8) 2048-BIT T 订购 PDF文档

DM54LS490M / National Semiconductor,Datasheet,06/07+,Dual Decade 订购 PDF文档

DM54LS491 / National Semiconductor,Datasheet,06/07+, 订购 PDF文档

DM54LS491AJ / National Semiconductor,Datasheet,07+,10-Bit 订购 PDF文档

DM54LS491J / National Semiconductor,Datasheet,06/07+, 订购 PDF文档

DM54LS498A / National Semiconductor,Datasheet,06/07+,Octal Shift Register 订购 PDF文档

DM54LS498AJ/883 / National Semiconductor,Datasheet,07+,8-Bit Shift Register 订购 PDF文档

DM54LS502 / National Semiconductor,Datasheet,06/07+,8-Bit Successive App 订购 PDF文档

DM54LS502J / National Semiconductor,Datasheet,07+,8-Bit Successive App 订购 PDF文档