SN74HC74DRE4 datasheet by Texas Instruments

SN74HC74DRE4 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74HC74DRE4 can handle?
  The maximum clock frequency of the SN74HC74DRE4 is 25 MHz, but it can vary depending on the operating conditions and the quality of the clock signal.
• How do I ensure that the SN74HC74DRE4 is properly powered?
  The SN74HC74DRE4 requires a power supply voltage (VCC) of 2.0 V to 6.0 V, and it's recommended to use a decoupling capacitor of 0.1 μF to 1 μF between VCC and GND to ensure proper power supply decoupling.
• What is the propagation delay of the SN74HC74DRE4?
  The propagation delay of the SN74HC74DRE4 is typically around 10 ns to 15 ns, but it can vary depending on the operating conditions and the load capacitance.
• Can I use the SN74HC74DRE4 in a 3.3 V system?
  Yes, the SN74HC74DRE4 can operate at 3.3 V, but it's recommended to check the datasheet for the specific voltage and current requirements to ensure compatibility.
• How do I handle the asynchronous reset input (CLR) of the SN74HC74DRE4?
  The asynchronous reset input (CLR) should be tied to VCC through a pull-up resistor (e.g., 1 kΩ) to ensure that the flip-flop is properly reset. A low signal on CLR will reset the flip-flop.