74HC4046ADB,118 datasheet by NXP Semiconductors

74HC4046ADB,118 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the 74HC4046ADB,118?
  The recommended operating voltage range for the 74HC4046ADB,118 is 2V to 6V, with a typical voltage of 5V.
• How do I ensure the PLL (Phase-Locked Loop) is properly locked in the 74HC4046ADB,118?
  To ensure the PLL is properly locked, the VCO (Voltage-Controlled Oscillator) 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 (LD) can be used to monitor the lock status.
• What is the maximum clock frequency that the 74HC4046ADB,118 can handle?
  The maximum clock frequency that the 74HC4046ADB,118 can handle is 20 MHz, but this may vary depending on the specific application and operating conditions.
• How do I reduce the power consumption of the 74HC4046ADB,118?
  To reduce power consumption, operate the device at a lower voltage (e.g., 3.3V instead of 5V), reduce the clock frequency, or use the power-down mode (PD) when the device is not in use.
• What is the purpose of the R1 and R2 resistors in the 74HC4046ADB,118?
  The R1 and R2 resistors are part of the loop filter in the PLL and are used to set the PLL bandwidth and damping ratio. They should be selected according to the datasheet recommendations to ensure proper PLL operation.