SN74AC574DW datasheet by Texas Instruments

SN74AC574DW Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74AC574DW can handle?
  The maximum clock frequency of the SN74AC574DW is 100 MHz.
• How do I ensure that the flip-flops are properly initialized on power-up?
  To ensure proper initialization, connect the preset (PRE) input to VCC and the clear (CLR) input to GND. This will set the outputs to a known state on power-up.
• What is the purpose of the output enable (OE) input?
  The output enable (OE) input is used to enable or disable the outputs. When OE is low, the outputs are enabled, and when OE is high, the outputs are in a high-impedance state.
• Can I use the SN74AC574DW in a 3.3V system?
  Yes, the SN74AC574DW is compatible with 3.3V systems. However, ensure that the input signals are compatible with the device's input voltage levels.
• How do I handle the asynchronous preset (PRE) and clear (CLR) inputs?
  The preset (PRE) and clear (CLR) inputs are asynchronous, meaning they can be asserted at any time, regardless of the clock signal. Ensure that these inputs are synchronized with the clock signal to avoid metastability issues.