This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN65HVD1781: About communication quality

Part Number: SN65HVD1781
Other Parts Discussed in Thread: SN65HVD485E

To whom it may concern,

When it compares with SN65HVD485E and SN65HVD1781 about signal rate,
the SN65HVD485E is faster than SN65HVD1781.

If the actual data rate is 0.1875Mbps, is the SN65HVD485E better in communication quality than SN65HVD1781?
Or is there no difference?
I’d like to know if the faster the signal rate, the more stable the communication.

Best regards,

Gk110

  • Hello,

    RS-485 communication should work well for either part as long as it is operated below its maximum specified operating rate and with appropriate cabling. There is generally no benefit to choosing a transceiver with a much higher rated rate. In fact, some users prefer to use "slower" transceivers in lower-data-rate applications because the slower output state transitions will result in less noticeable reflections when operated in a more complex network with multiple unterminated branches. Slower transceivers are also sometimes preferred due to EMI concerns, although since RS-485 transceivers typically have a well-balanced differential output this is less of a concern for most applications.

    Please let me know if this isn't clear or if you have any further questions.

    Regards,
    Max