MAX3221CDBR by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。MAX3221CDBR Price reference $ 0.884250。MAX3221CDBR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information MAX3221CDBR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial