CD74FCT244ATM datasheet by Texas Instruments

CD74FCT244ATM Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of CD74FCT244ATM?
  The maximum operating frequency of CD74FCT244ATM is 100 MHz, but it can vary depending on the system design and capacitive loading.
• How do I ensure signal integrity when using CD74FCT244ATM in a high-speed application?
  To ensure signal integrity, use a low-impedance PCB design, keep signal traces short, and use termination resistors to minimize reflections. Also, consider using a signal integrity analysis tool to simulate and optimize your design.
• Can I use CD74FCT244ATM in a 3.3V system?
  Yes, CD74FCT244ATM is compatible with 3.3V systems, but ensure that the input voltage does not exceed the maximum rating of 4.5V. Also, be aware that the output voltage may not reach the full 3.3V level due to the internal voltage drop.
• How do I handle power sequencing when using CD74FCT244ATM in a system with multiple power rails?
  To avoid latch-up or damage, ensure that the VCC pin is powered up before the input signals, and that the input signals are stable before the VCC pin is powered down. Consider using a power sequencing controller or a reset circuit to manage the power-up and power-down sequences.
• What is the recommended layout and routing for CD74FCT244ATM to minimize EMI and noise?
  To minimize EMI and noise, use a symmetrical layout, keep the input and output traces separate, and avoid running signal traces near the VCC and GND pins. Also, consider using a ground plane and shielding to reduce radiation.