CD74AC74E datasheet by Texas Instruments

CD74AC74E Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD74AC74E can handle?
  The CD74AC74E can handle clock frequencies up to 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 CD74AC74E?
  The recommended operating voltage range for the CD74AC74E is 4.5V to 5.5V.
• Can I use the CD74AC74E in a 3.3V system?
  While the CD74AC74E is specified for 5V operation, it can be used in a 3.3V system, but the output voltage levels may not be compatible with 3.3V logic. Additional level-shifting circuitry may be required.
• How do I minimize power consumption in my design using the CD74AC74E?
  To minimize power consumption, use a low-power clock source, minimize clock frequency, and use a low-power mode (if available) when the device is not in use.