TL084QDR by Texas Instruments(TI) Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。TL084QDR Price reference $ 0.352800。TL084QDR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TL084QDR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial