MAX3221IPWR by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。MAX3221IPWR Price reference $ 0.884250。MAX3221IPWR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information MAX3221IPWR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial