TLC274CDR by TI(德州仪器) Design and production,in One Stai Electronic Co, LTD Spot sales,And can pass One Stai Electronic Co, LTD Purchasing。TLC274CDR Price reference $ 0.607034。TLC274CDR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TLC274CDR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial