型号 / 厂家，封装，批号，备注，订购

MM74HC623 / National Semiconductor,Datasheet,06/07+,Octal TRI-STATE Tran 订购 PDF文档

MM74HC640J / National Semiconductor,Datasheet,06/07+,Inverting Octal TRI- 订购 PDF文档

MM74HC597MX_NL / Fairchild Semiconductor,Datasheet,06/07+,8-Bit Shift Register 订购 PDF文档

MM74HC646 / National Semiconductor,Datasheet,06/07+,Octal Bus-Line Trans 订购 PDF文档

MM74HC643J / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档

MM74HC6555M / FSC,SOP-16,06+,0755-83980010 订购 PDF文档

MM74HC648 / National Semiconductor,Datasheet,07+, 订购 PDF文档

MM74HC688 / National Semiconductor,Datasheet,06/07+,8-Bit Magnitude Comp 订购 PDF文档

MM74HC688N/MC74HT521N / ,DIP20,94+,原装 订购 PDF文档

MM74HC688CW / Fairchild Semiconductor,Datasheet,07+,8-Bit Magnitude Comp 订购 PDF文档