SN65HVD75D datasheet by Texas Instruments

SN65HVD75D Frequently Asked Questions (FAQs)

• What is the maximum cable length supported by the SN65HVD75D?
  The maximum cable length supported by the SN65HVD75D is dependent on the baud rate and the type of cable used. As a general guideline, the maximum cable length is around 100 meters at 9600 bps and 10 meters at 1 Mbps.
• How do I ensure electromagnetic compatibility (EMC) with the SN65HVD75D?
  To ensure EMC with the SN65HVD75D, it is recommended to follow proper PCB layout and design guidelines, use a common-mode choke, and add EMI filters to the RS-485 bus.
• What is the maximum number of nodes supported by the SN65HVD75D?
  The SN65HVD75D supports up to 32 nodes on a single RS-485 bus, but this can be limited by the specific application and cable length.
• How do I handle bus contention and collisions on the SN65HVD75D?
  To handle bus contention and collisions on the SN65HVD75D, it is recommended to implement a collision detection and automatic retransmission mechanism in the application software.
• What is the recommended termination scheme for the SN65HVD75D?
  The recommended termination scheme for the SN65HVD75D is a 120-ohm resistor at each end of the RS-485 bus, with a biasing network to ensure a stable idle state.