LM311DT by ST Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。LM311DT Price reference $ 0.118800。LM311DT - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM311DT Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial