The maximum cable length supported by the SN75HVD12D is dependent on the baud rate and cable characteristics. As a general guideline, the device can support cable lengths up to 100 meters at lower baud rates (e.g., 9600 bps) and up to 10 meters at higher baud rates (e.g., 115200 bps).
To ensure reliable communication in noisy environments, it is recommended to use shielded cables, implement proper grounding and shielding techniques, and consider using noise-filtering components such as ferrite beads or common-mode chokes. Additionally, adjusting the transmitter output amplitude and receiver input threshold can help improve noise immunity.
For optimal performance, it is recommended to follow good PCB layout practices, such as keeping the transmitter and receiver lines as short as possible, using a solid ground plane, and avoiding routing signals near noise sources. Additionally, it is recommended to use a 100-ohm differential impedance for the transmitter and receiver lines.
To handle hot-swapping or hot-plugging with the SN75HVD12D, it is recommended to use external circuitry to protect the device from voltage transients and ESD events. This can include using TVS diodes, resistors, and capacitors to filter and clamp the voltage and current during hot-swapping or hot-plugging events.
The SN75HVD12D has a maximum junction temperature of 150°C. To ensure reliable operation, it is recommended to keep the device within a safe operating temperature range by providing adequate heat sinking, using thermal pads or heat sinks, and ensuring good airflow around the device.
SN75HVD12D datasheet
by Texas Instruments
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