CY7C4421-25AC datasheet by Cypress Semiconductor

CY7C4421-25AC Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with CY7C4421-25AC?
  The maximum clock frequency for CY7C4421-25AC is 25 MHz, as indicated by the '-25' in the part number. However, the actual clock frequency limit may be lower depending on the system design and layout.
• How do I ensure signal integrity with CY7C4421-25AC?
  To ensure signal integrity, follow proper PCB design guidelines, such as using controlled impedance traces, minimizing trace length, and using termination resistors. Additionally, ensure that the clock signal is clean and has minimal jitter.
• Can I use CY7C4421-25AC in a 3.3V system?
  Yes, CY7C4421-25AC is compatible with 3.3V systems. The device operates from a single 3.3V power supply and has 3.3V-tolerant inputs.
• How do I handle metastability issues with CY7C4421-25AC?
  Metastability issues can be handled by using synchronizers, such as two-stage synchronizers, to resynchronize asynchronous inputs. Additionally, ensure that the clock signal is clean and has minimal jitter.
• What is the maximum capacitance that can be driven by CY7C4421-25AC?
  The maximum capacitance that can be driven by CY7C4421-25AC is 30 pF. However, the actual capacitance limit may be lower depending on the system design and layout.