IC快速检索：
型号 / 厂家，封装，批号，备注，订购
M74HC4520B1RSTPDIP16 / ,,07+,原装货欢迎来电 订购 PDF文档
M74HC4520BI / JAPAN,,, 订购 PDF文档
M74HC4520BIR / ,,,010-62106431 订购 PDF文档
M74HC4520M1R / FUJ,DIP,02+,全新原装，深圳/香港现货 订购 PDF文档
M74HC423B1 / ST,DIP,01+,全新原装，深圳/香港现货 订购 PDF文档
M74HC423B1R / FAIRCHILD,,02+,原装现货 订购 PDF文档
M74HC423M1RSTSOIC16 / ,,07+,原装货欢迎来电 订购 PDF文档
M74HC42B1 / FAIRCHILD,,02+,原装现货 订购 PDF文档