TM74HC245 by TM(天微) Design and production,in One Stai Electronic Co, LTD Spot sales,And can pass One Stai Electronic Co, LTD Purchasing。TM74HC245 Price reference $ 0。TM74HC245 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TM74HC245 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial