型号 / 厂家，封装，批号，备注，订购

54F189LL / National Semiconductor,Datasheet,07+,64-Bit Random Access 订购 PDF文档

54F189LLQB / National Semiconductor,Datasheet,07+, 订购 PDF文档

54F190/B2A / Philips Semiconductors,Datasheet,07+,BCD-Output Decade Up 订购 PDF文档

54F190/BEA / Philips Semiconductors,Datasheet,07+,BCD-Output Decade Up 订购 PDF文档

54F190/BFA / Philips Semiconductors,Datasheet,07+,BCD-Output Decade Up 订购 PDF文档

54F190FMQB / Various,Datasheet,07+,BCD-Output Decade Up 订购 PDF文档

54F190LM / National Semiconductor,Datasheet,07+,Up/Down Decade 订购 PDF文档

54F191FM / National Semiconductor,Datasheet,07+,Up/Down Binary 订购 PDF文档

54F191FMQB / National Semiconductor,Datasheet,07+,Up/Down Binary 订购 PDF文档

54F191FMQB(SMD) / National Semiconductor,Datasheet,07+,4-Bit Binary Up-Down 订购 PDF文档