晶焱科技的AZRS5485无极性RS485通信芯片采标准SOP8封装，内建极性侦测与判断电路，当内部电路判断完成后，即自我进行极性的校正动作，全部在芯片内部完成，不用外接额外硬件或软件来达到无极性接口要求-Crystal Yan technology AZRS5485 non-polarity RS485 communication chip adopt standards SOP8 encapsulation, built-in polarity and detect circuit, when after the completion of the internal circuit judge, namely self polarity correction action, all inside the chip, without external additional hardware or software to meet the requirements of nonpolar interface