A good PCB layout practice is to keep the analog and digital grounds separate, use a solid ground plane, and keep the high-frequency signals away from the analog signals. Additionally, use a common-mode choke or a ferrite bead to filter the power supply lines.
The MAX3490CSA+T requires a power-up sequence of VCC first, followed by VDD. During power-down, VDD should be turned off first, followed by VCC. This ensures that the internal voltage regulators are properly shut down to prevent damage.
The MAX3490CSA+T supports cable lengths up to 100 meters, depending on the cable quality and the transmission rate. However, it's recommended to use repeaters or active cables for longer distances to maintain signal integrity.
Use an oscilloscope to check the signal integrity, and verify that the power supply voltages are within the recommended range. Check the datasheet for specific troubleshooting guidelines, and consult the application notes for common issues and solutions.
Yes, the MAX3490CSA+T is designed to support hot-swapping, but it's essential to ensure that the power supply is properly sequenced and the device is properly reset during hot-swap events to prevent damage or malfunction.
MAX3490CSA+T datasheet
by Maxim Integrated Products
