型号 / 厂家，封装，批号，备注，订购

54LS248FMQB / National Semiconductor,Datasheet,07+,7-Segment Display Dr 订购 PDF文档

54LS249 / Fairchild Semiconductor,Datasheet,07+,Full Line Condensed 订购 PDF文档

54LS249DMQB / National Semiconductor,Datasheet,07+,7-Segment Display Dr 订购 PDF文档

54LS251J/883C / ,,最新批号,原装现货 订购 PDF文档

54LS253FM / Various,Datasheet,07+,4-Line Digital Multi 订购 PDF文档

54LS253LM / NSC,原厂原装,08+07+,7到10天国际现货 订购 PDF文档

54LS253LMQB / Various,Datasheet,07+,4-Line Digital Multi 订购 PDF文档

54LS255J / Raytheon Electronics,Datasheet,07+,4-Line Digital Demul 订购 PDF文档

54LS257A/B2A / Philips Semiconductors,Datasheet,07+,2-Line Digital Multi 订购 PDF文档

54LS257A/BFA / Philips Semiconductors,Datasheet,07+,2-Line Digital Multi 订购 PDF文档