SN74AHC174D datasheet by Texas Instruments

SN74AHC174D Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74AHC174D can handle?
  The maximum clock frequency of the SN74AHC174D is 100 MHz, but it can vary depending on the operating conditions and the quality of the clock signal.
• How do I ensure that the SN74AHC174D is properly powered and decoupled?
  To ensure proper power and decoupling, use a high-quality power supply with a low impedance output, and decouple the VCC pin with a 0.1 μF ceramic capacitor to GND, placed as close to the device as possible.
• What is the recommended termination scheme for the SN74AHC174D?
  The recommended termination scheme for the SN74AHC174D is to use a series terminator (e.g., 33 Ω) at the far end of the transmission line, and a parallel terminator (e.g., 50 Ω) at the near end, to minimize reflections and ensure signal integrity.
• Can I use the SN74AHC174D in a 3.3V system, and if so, what are the limitations?
  Yes, the SN74AHC174D can be used in a 3.3V system, but the output voltage will be limited to 3.3V, and the input voltage threshold will be around 2.0V. Additionally, the device may not meet the specified timing parameters at 3.3V.
• How do I handle the asynchronous reset input (MR) during power-up?
  During power-up, the asynchronous reset input (MR) should be held low until the power supply has reached a stable level, and then released to allow the device to come out of reset. This ensures that the device initializes correctly and avoids any potential metastability issues.