IC快速检索：
型号 / 厂家，封装，批号，备注，订购
M74HC221B1R / FAIRCHILD,,02+,原装现货 订购 PDF文档
M74HC221B1RSTPDIP16 / ,,,原装现货 订购 PDF文档
M74HC221DT / ST,SO-16,04+,全新原装 订购 PDF文档
M74HC221M1 / FAIRCHILD,,02+,原装现货 订购 PDF文档
M74HC221M13TR / ,,05+,全新库存特价 订购 PDF文档
M74HC221M1Rsmdtube / ST 93,,,010-62106431 订购 PDF文档
M74HC221RM13TR / ST,,02+,全新原装，深圳/香港现货 订购 PDF文档
M74HC237B1R / FAIRCHILD,,02+,原装现货 订购 PDF文档