NE556N by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。NE556N Price reference $ 0.530000。NE556N - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information NE556N Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial