AM26LV31CNSLE datasheet by Texas Instruments

AM26LV31CNSLE Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the AM26LV31CNSLE to minimize EMI and noise?
  Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital traces separate. Additionally, use a common-mode choke and ferrite beads to filter out high-frequency noise.
• How do I ensure the AM26LV31CNSLE is properly terminated for high-speed data transmission?
  Use a 100-ohm differential termination resistor at the receiver end, and ensure the transmission line is properly matched to the driver impedance. Also, use a common-mode termination resistor to reduce electromagnetic radiation.
• What is the maximum cable length supported by the AM26LV31CNSLE?
  The maximum cable length depends on the data rate and cable characteristics. As a general guideline, for a data rate of 100 Mbps, the maximum cable length is around 10 meters. However, it's recommended to consult the TI application note 'AN-1031: TIA/EIA-485 (RS-485) Cable Length and Data Rate' for more detailed information.
• How do I handle hot-swapping or hot-plugging with the AM26LV31CNSLE?
  To ensure safe hot-swapping, use a power-on reset circuit to reset the device when the power is applied. Additionally, use a slew-rate controlled driver to minimize electromagnetic interference during hot-plugging.
• What are the thermal considerations for the AM26LV31CNSLE, and how do I prevent overheating?
  The AM26LV31CNSLE has a maximum junction temperature of 150°C. To prevent overheating, ensure good thermal conductivity between the device and the PCB, use a heat sink if necessary, and avoid high ambient temperatures.