这是一485与422共用的一个片子,能帮你开发485和422提供参考,这个片子电压范围很宽,希望能带给你很大的帮助-This is a 485 with 422 shared a film, can help you to develop 485 and 422 provide a reference, a wide voltage range of this film, and hope to give you a great help