SN74HC11DR by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。SN74HC11DR Price reference $ 0.130350。SN74HC11DR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information SN74HC11DR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial