The maximum cable length supported by the SN65HVD485EDG4 is dependent on the baud rate and the type of cable used. As a general guideline, the maximum cable length for a 9600-baud rate is around 4000 feet (1219 meters), while for a 115200-baud rate, it is around 100 feet (30 meters).
To ensure EMC with the SN65HVD485EDG4, it is recommended to follow proper PCB layout and design guidelines, such as separating analog and digital grounds, using decoupling capacitors, and shielding the device. Additionally, the device should be placed in a metal enclosure to reduce electromagnetic radiation.
The recommended termination resistor value for the SN65HVD485EDG4 is 120 ohms. This value is based on the characteristic impedance of the transmission line and is used to match the impedance of the transmission line to the device.
Yes, the SN65HVD485EDG4 can be used in a multi-drop configuration. However, it is recommended to use a repeater or a hub to connect multiple devices to the same bus, as the device is not designed to drive multiple loads directly.
The maximum operating temperature range for the SN65HVD485EDG4 is -40°C to 85°C. However, it is recommended to operate the device within a temperature range of 0°C to 70°C for optimal performance.
SN65HVD485EDG4 datasheet
by Texas Instruments
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