TL494CDR by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。TL494CDR Price reference $ 0.224750。TL494CDR - 。You can download TL494CDR Chinese information、Pin map、DatasheetData sheet function specification,In the information TL494CDR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial