L293D by STMicroelectronics Design and production,in Shenzhen Jungu Technology Electronics Co., Ltd. Spot sales,And can pass Shenzhen Jungu Technology Electronics Co., Ltd. Purchasing。L293D Price reference $ 5.317600。L293D - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L293D Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial