TLC555QDR by TI Design and production,in SEHOT CO., LIMITED Spot sales,And can pass SEHOT CO., LIMITED Purchasing。TLC555QDR Price reference $ 0.474884。TLC555QDR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TLC555QDR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial