型号 / 厂家，封装，批号，备注，订购

SN54LS49 / Texas Instruments,Datasheet,06/07+,BCD-TO-SEVEN-SEGMENT 订购 PDF文档

SN54LS490FK / ,Datasheet,06/07+,Dual Asynchronous De 订购 PDF文档

SN54LS490W / Various,Datasheet,06/07+,BCD-Output Decade Up 订购 PDF文档

SN54LS491A / Monolithic Memories,Datasheet,06/07+,LSI Data Book 1986 订购 PDF文档

SN54LS491A28L / Various,Datasheet,06/07+,Binary Up-Down 订购 PDF文档

SN54LS491AJS / Various,Datasheet,07+,Binary Up-Down .. 订购 PDF文档

SN54LS491AW / Various,Datasheet,06/07+,Binary Up-Down 订购 PDF文档

SN54LS498L / Various,Datasheet,06/07+,8-Bit Shift Register 订购 PDF文档

SN54LS49W / Texas Instruments,Datasheet,07+,BCD-TO-SEVEN-SEGMENT 订购 PDF文档

SN54LS51 / Texas Instruments,Datasheet,06/07+,AND-OR-INVERT GATES 订购 PDF文档