SN74HC161DR by TI Design and production,in SEHOT CO., LIMITED Spot sales,And can pass SEHOT CO., LIMITED Purchasing。SN74HC161DR Price reference $ 0.380228。SN74HC161DR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information SN74HC161DR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial