ISO7221BDR by Texas Instruments Design and production,in DES TECHINOLOGY(HK)LIMITED Spot sales,And can pass DES TECHINOLOGY(HK)LIMITED Purchasing。ISO7221BDR Price reference ¥ 11.635131。ISO7221BDR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information ISO7221BDR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial