TLC555QDR by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。TLC555QDR Price reference $ 0.860000。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