LM393DT by STMicroelectronics Design and production,in Xinfengsheng Electronics (Hong Kong) Co., Ltd. Spot sales,And can pass Xinfengsheng Electronics (Hong Kong) Co., Ltd. Purchasing。LM393DT Price reference $ 0.234000。LM393DT - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information LM393DT Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial