LM293AD by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. Purchasing。LM293AD Price reference $ 0.450000。LM293AD - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM293AD Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial