HEF4049BT by NXP Design and production,in CHUNG ZE Internation Technology Limited Spot sales,And can pass CHUNG ZE Internation Technology Limited Purchasing。HEF4049BT Price reference $ 1.120000。HEF4049BT - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information HEF4049BT Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial