MAX485ESA+: FAQ

  • Do I need to add pull-up/pull down resistors when using MAX485?

    MAX485 file safe circuit can only grantee a logic-high receiver output when receiver inputs are open, it can not guarantees a logic-high receiver output when receiver inputs are shorted, or when they are…
  • Does the MAX485E require pull-up/pull-down resistors on the driver outputs?

    When the driver is not driving, its output will be high impedance. Because of this and the bus differential termination resistance the voltage between pins A and B will become 0V. In the RS-485/RS-422…
  • RS232/RS485通讯的可靠性问题

    问题: 最近我一直在做通讯可靠性方面的研究,例如我想测试RS232/RS485通讯的可靠性。我一直简单使用电脑通讯口监控通讯命令的发送字节数、接受字节数以及接受字节的错误率,但是这样非常的麻烦。有没有什么样的模块可以自动监控通讯模式下通讯数据的可靠性,当出错时可及时报错,不用人工重复去找错。另外我也想知道是否CAN 通讯模式也可以自动监控。 解答: 对于RS232或者RS485器件来讲…
  • What is the minimum supply voltage for the MAX485?

    The minimum supply voltage for the IC is 4.75V.

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