这个485器件和同系列的1490支持3.3v供电吗,支持的话,3.3v供电时abzy四个引脚的电压是多大呢
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您好,ADM1491是ADI公司的485收发器哈,关于它的技术问题,您可以直接联系ADI或者登录ADI论坛呢。