M74HC165TTR by STMicroelectronics Design and production,in TanJiayuan Electronics Spot sales,And can pass TanJiayuan Electronics Purchasing。M74HC165TTR Price reference ¥ 5.793917。M74HC165TTR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information M74HC165TTR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial