Texas Instruments provides a recommended PCB layout in the application note SLVAE04, which includes guidelines for trace routing, component placement, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
The SN65LVELT22DGKR has a thermal pad on the bottom of the package, which should be connected to a thermal ground plane on the PCB to dissipate heat. A thermal via array or a thermal pad on the PCB can be used to improve heat dissipation. Additionally, the device should be placed in a well-ventilated area to prevent overheating.
Although the datasheet specifies a recommended operating voltage range of 3.3V to 5V, it's recommended to operate the device within a narrower range of 3.3V ± 10% to ensure optimal performance and minimize power consumption.
To ensure EMC, it's recommended to follow proper PCB design and layout practices, such as using a solid ground plane, minimizing trace lengths, and using shielding or filtering components as needed. Additionally, the device should be placed in a metal enclosure or shielded area to prevent electromagnetic radiation.
The maximum cable length supported by the SN65LVELT22DGKR depends on the specific application and the type of cable used. However, as a general guideline, the device can support cable lengths up to 100 meters at a data rate of 100 Mbps. For longer cable lengths or higher data rates, repeaters or active cables may be required.
SN65LVELT22DGKR datasheet
by Texas Instruments
