HCPL-1931 datasheet by Avago Technologies

HCPL-1931 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of HCPL-1931?
  Broadcom recommends a PCB layout with a solid ground plane, minimal track length, and a 50-ohm transmission line for the output stage to ensure optimal performance and minimize electromagnetic interference (EMI).
• How do I ensure reliable operation of HCPL-1931 in high-temperature environments?
  To ensure reliable operation in high-temperature environments, it is essential to follow proper thermal management practices, such as providing adequate heat sinking, using a thermally conductive PCB material, and keeping the junction temperature below 125°C.
• What is the maximum allowable voltage on the VCC pin of HCPL-1931?
  The maximum allowable voltage on the VCC pin of HCPL-1931 is 5.5V. Exceeding this voltage can cause permanent damage to the device.
• Can I use HCPL-1931 in a galvanically isolated interface?
  Yes, HCPL-1931 is designed for galvanic isolation and can be used in applications requiring electrical isolation between the input and output stages.
• What is the typical propagation delay of HCPL-1931?
  The typical propagation delay of HCPL-1931 is around 10-15 ns, which is relatively low compared to other optocouplers, making it suitable for high-speed applications.