MAX3250EAI+ datasheet by Maxim Integrated Products

MAX3250EAI+ Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the MAX3250EAI+?
  A good PCB layout for the MAX3250EAI+ involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
• How do I ensure the MAX3250EAI+ is properly powered?
  To ensure proper power supply, connect the VCC pin to a clean, low-noise power supply with a voltage range of 2.7V to 5.5V. Decouple the power supply with a 10uF capacitor and a 100nF capacitor in parallel, placed close to the device.
• What is the maximum data transfer rate of the MAX3250EAI+?
  The MAX3250EAI+ has a maximum data transfer rate of 100Mbps in SPI mode and 1Mbps in I2C mode.
• How do I configure the MAX3250EAI+ for I2C or SPI mode?
  The MAX3250EAI+ can be configured for I2C or SPI mode by setting the MODE pin high or low, respectively. For I2C mode, connect the MODE pin to VCC, and for SPI mode, connect it to GND.
• What is the purpose of the WAKE pin on the MAX3250EAI+?
  The WAKE pin is an active-low input that allows the device to wake up from shutdown mode. When the WAKE pin is pulled low, the device will exit shutdown mode and resume normal operation.