The maximum cable length supported by the SN65HVD21AD depends on the baud rate and the type of cable used. As a general guideline, Texas Instruments recommends a maximum cable length of 100 meters at 1 Mbps, 50 meters at 5 Mbps, and 20 meters at 10 Mbps.
To ensure reliable communication in noisy environments, it is recommended to use a shielded cable, twisted pair wiring, and common-mode chokes. Additionally, the SN65HVD21AD has built-in noise filtering and common-mode rejection, which can help to improve signal integrity.
The power consumption of the SN65HVD21AD depends on the operating mode and the supply voltage. In normal operation, the device typically consumes around 10-15 mA at 3.3V or 5V supply voltage. In shutdown mode, the power consumption is typically less than 1 μA.
Yes, the SN65HVD21AD can be used in a multi-point configuration, but it is limited to a maximum of 32 nodes on the bus. Additionally, the device must be configured in a star topology, with one master node and multiple slave nodes.
To troubleshoot communication issues with the SN65HVD21AD, it is recommended to check the signal integrity using an oscilloscope, verify the correct configuration of the device, and check for any noise or interference on the bus. Additionally, Texas Instruments provides a range of tools and software to help with debugging and troubleshooting.
SN65HVD21AD datasheet
by Texas Instruments
