CDC208DWR datasheet by Texas Instruments

CDC208DWR Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the CDC208DWR?
  The recommended power-on 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 the CDC208DWR in a system with multiple clock domains?
  When using the CDC208DWR 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 the CDC208DWR?
  The maximum frequency of operation for the CDC208DWR is 100 MHz. However, the actual frequency of operation may be limited by the system's clock signal quality, PCB layout, and other factors.
• How do I ensure proper termination of the output signals when using the CDC208DWR?
  Proper termination of the output signals is crucial to prevent signal reflections and ensure signal integrity. Use a 50-ohm termination resistor in series with the output signal, and consider using a termination network or a clock termination circuit for high-frequency signals.
• What is the recommended layout and routing for the CDC208DWR to minimize noise and signal degradation?
  To minimize noise and signal degradation, follow good PCB layout and routing practices. Keep the clock signal traces short and away from noisy signals, use a solid ground plane, and avoid vias and layer changes in the clock signal path.