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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/705189/thvd1450-thvd1450-transmission-distance
尊敬的先生：
我想使用 THVD1450 进行 RS485 传输、但 我有疑问。
如果我 向端口 A 输入不同的电压(3.3V 或5V) 、传输距离是否不同？
我现在使用 MAX13488E 替换 THVD1450。
