SN74AHC74D datasheet by Texas Instruments

SN74AHC74D Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74AHC74D can handle?
  The maximum clock frequency of the SN74AHC74D 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) and clear (CLR) inputs to VCC or GND, and use a pull-up or pull-down resistor to prevent floating inputs.
• What is the recommended operating voltage range for the SN74AHC74D?
  The recommended operating voltage range for the SN74AHC74D is 2.0 V to 5.5 V.
• Can I use the SN74AHC74D in a 3.3 V system?
  Yes, the SN74AHC74D is compatible with 3.3 V systems, but ensure that the input signals are within the recommended voltage range.
• How do I handle asynchronous inputs to the flip-flops?
  Use synchronous inputs whenever possible. If asynchronous inputs are necessary, use a synchronizer circuit or a metastability resolver to ensure reliable operation.