CDC2351QDBR datasheet by Texas Instruments

CDC2351QDBR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for CDC2351QDBR?
  The recommended power-up sequence is to apply VCC first, followed by VDD, and then the clock signal. This ensures proper initialization and prevents latch-up.
• How do I handle the clock signal when using CDC2351QDBR in a system with multiple clock domains?
  When using CDC2351QDBR in a system with multiple clock domains, it's essential to ensure that the clock signal is properly synchronized and buffered to prevent clock domain crossing issues. Use a clock buffer or a clock domain crossing circuit to synchronize the clock signal.
• What is the maximum frequency of operation for CDC2351QDBR?
  The maximum frequency of operation for CDC2351QDBR is 100 MHz. However, the actual frequency of operation may be limited by the system's clock distribution, signal integrity, and other factors.
• How do I implement a reset signal for CDC2351QDBR?
  The CDC2351QDBR does not have a dedicated reset pin. Instead, use the asynchronous reset signal (ASYNC_RST) to reset the device. This signal must be asserted low for at least 10 ns to ensure a proper reset.
• What is the recommended termination scheme for CDC2351QDBR outputs?
  The recommended termination scheme for CDC2351QDBR outputs is to use a 50-ohm series resistor and a 50-ohm parallel terminator to the output pin. This ensures proper signal integrity and reduces reflections.