LM339N by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。LM339N Price reference $ 0.500000。LM339N - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM339N Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial