74HC109D,653 datasheet by NXP Semiconductors

74HC109D,653 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the 74HC109D,653?
  The recommended operating voltage range for the 74HC109D,653 is 2.0 V to 6.0 V, with a typical voltage of 5.0 V.
• How do I handle the power-up and power-down sequences for the 74HC109D,653?
  To ensure proper operation, it's recommended to power up the VCC pin before the input signals, and power down the VCC pin after the input signals. This helps prevent unwanted output states during power-up and power-down.
• What is the maximum frequency of operation for the 74HC109D,653?
  The maximum frequency of operation for the 74HC109D,653 is typically around 25 MHz, but this can vary depending on the specific application, operating voltage, and temperature.
• How do I ensure proper noise immunity and signal integrity when using the 74HC109D,653?
  To ensure proper noise immunity and signal integrity, use proper PCB design techniques, such as using ground planes, decoupling capacitors, and signal termination. Additionally, consider using series resistors or ferrite beads to reduce noise and ringing.
• Can I use the 74HC109D,653 in a 3.3 V or 1.8 V system?
  Yes, the 74HC109D,653 can operate at 3.3 V or 1.8 V, but the output voltage levels and current drive capabilities may be reduced. Consult the datasheet for specific details on voltage and current limitations at these voltage levels.