LM211DR by Texas Instruments(TI) Design and production,in Shenzhen Nanyuxin Electronics Co., Ltd. Spot sales,And can pass Shenzhen Nanyuxin Electronics Co., Ltd. Purchasing。LM211DR Price reference $ 0.660116。LM211DR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM211DR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial