LM239ADR by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。LM239ADR Price reference $ 0.113850。LM239ADR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM239ADR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial