CD74AC240M datasheet by Texas Instruments

CD74AC240M Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the CD74AC240M?
  The maximum operating frequency of the CD74AC240M is 100 MHz, but it can vary depending on the specific application and operating conditions.
• How do I handle the power-up and power-down sequencing of the CD74AC240M?
  It is recommended to power up the VCC pin before the input signals and power down the VCC pin after the input signals to prevent unwanted output states.
• What is the recommended termination scheme for the CD74AC240M?
  The recommended termination scheme for the CD74AC240M is to use a 50-ohm termination resistor at the output of each buffer/driver to prevent signal reflections and ensure signal integrity.
• Can I use the CD74AC240M in a 3.3V system?
  Yes, the CD74AC240M can operate in a 3.3V system, but the output voltage will be limited to 3.3V. Additionally, the input voltage threshold may be affected, and the device may not meet the specified propagation delay and transition time.
• How do I handle the thermal management of the CD74AC240M?
  The CD74AC240M is available in a surface-mount package, and thermal management can be achieved through proper PCB design, thermal vias, and heat sinks. The device has a maximum junction temperature of 150°C.