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SN65C1167EPW 用作485总线和422总线 驱动器都可以嘛?

Other Parts Discussed in Thread: SN65C1167

SN65C1167EPW 我们有个项目用这个芯片,作为422全双工通信。SN65C1167EPW 输出DCD信号的电压 不带负载时 ±5V没问题。和另一个设备连接后带负载了就时不时不正常,120ohm端接电阻SN65C1167EPW输出端需要嘛? 如下图纸 有问题嘛? 原来客户用的是LTC2872IUHF#PBF,看了规格书没觉得 哪里不一样,只是描述时它只提了485。