LM239APT by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。LM239APT Price reference $ 0.175150。LM239APT - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM239APT Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial