CD54HC4046AF datasheet by Texas Instruments

CD54HC4046AF Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the CD54HC4046AF?
  The recommended operating voltage range for the CD54HC4046AF is 2V to 6V, with a typical operating voltage of 5V.
• How do I ensure the PLL is properly locked in the CD54HC4046AF?
  To ensure the PLL is properly locked, the VCO input frequency should be within the specified range, and the loop filter components should be selected according to the datasheet recommendations. Additionally, the PLL lock detector output can be monitored to verify lock status.
• What is the maximum clock frequency that the CD54HC4046AF can handle?
  The maximum clock frequency that the CD54HC4046AF can handle is 50 MHz, but this may vary depending on the specific application and operating conditions.
• How do I choose the correct loop filter components for the CD54HC4046AF?
  The loop filter components should be chosen based on the desired PLL bandwidth, phase margin, and stability. The datasheet provides guidelines and equations to help with component selection.
• Can the CD54HC4046AF be used as a standalone frequency synthesizer?
  Yes, the CD54HC4046AF can be used as a standalone frequency synthesizer, but it requires an external reference clock and loop filter components to operate.