ST485BN datasheet by STMicroelectronics

ST485BN Frequently Asked Questions (FAQs)

• What is the maximum cable length supported by ST485BN?
  The maximum cable length supported by ST485BN is 1200 meters, but it depends on the baud rate and cable quality.
• How do I ensure signal integrity with ST485BN?
  To ensure signal integrity, use twisted pair cables, keep the transmitter and receiver close to each other, and use a common ground between the transmitter and receiver.
• What is the maximum data rate supported by ST485BN?
  The maximum data rate supported by ST485BN is 10 Mbps, but it can be limited by the cable length and quality.
• Can I use ST485BN for half-duplex communication?
  Yes, ST485BN can be used for half-duplex communication by using the DE (Driver Enable) pin to switch between transmit and receive modes.
• How do I handle bus contention with multiple transmitters on the same bus?
  To handle bus contention, use a non-return-to-zero (NRZ) encoding scheme and implement a collision detection mechanism to detect and resolve bus contention.