SN74LS04NSR by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。SN74LS04NSR Price reference $ 0.268250。SN74LS04NSR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information SN74LS04NSR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial