LM239ADT by STMicroelectronics Design and production,in TanJiayuan Electronics Spot sales,And can pass TanJiayuan Electronics Purchasing。LM239ADT Price reference ¥ 5.276603。LM239ADT - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM239ADT Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial