MAX3221CPWR by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。MAX3221CPWR Price reference $ 0.768150。MAX3221CPWR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information MAX3221CPWR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial