型号 / 厂家，封装，批号，备注，订购

DM74S271J / National Semiconductor,Datasheet,07+,General Purpose 订购 PDF文档

DM74S271N / National Semiconductor,Datasheet,07+,General Purpose 订购 PDF文档

DM74S280N? / ,,最新批号,原装现货 订购 PDF文档

DM74S280WM / National Semiconductor,Datasheet,07+,9-Bit Parity Generat 订购 PDF文档

DM74S283 / Fairchild Semiconductor,Datasheet,07+,4-Bit Binary Adder w 订购 PDF文档

DM74S283N? / ,,最新批号,原装现货 订购 PDF文档

DM74S287AJ/A+ / National Semiconductor,Datasheet,07+,Fuse-Programmable PR 订购 PDF文档

DM74S287J/A+ / National Semiconductor,Datasheet,06/07+,Fuse-Programmable PR 订购 PDF文档

DM74S288A / National Semiconductor,Datasheet,06/07+,1K x 8 TTL PROM Memo 订购 PDF文档

DM74S288AJ/A+ / National Semiconductor,Datasheet,06/07+,Fuse-Programmable PR 订购 PDF文档