74AC257TTR datasheet by STMicroelectronics

74AC257TTR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the 74AC257TTR?
  The recommended operating voltage range for the 74AC257TTR is 2.0V to 5.5V, although it can operate down to 1.5V with reduced performance.
• How do I ensure signal integrity when using the 74AC257TTR in high-speed applications?
  To ensure signal integrity, use a low-impedance PCB design, keep signal traces short, and use termination resistors or series resistors to reduce reflections and ringing.
• Can I use the 74AC257TTR in a 3.3V system with 5V tolerant inputs?
  Yes, the 74AC257TTR is 5V tolerant, so it can be used in a 3.3V system with 5V inputs, but ensure that the output voltage does not exceed the maximum rating of 5.5V.
• What is the maximum clock frequency supported by the 74AC257TTR?
  The maximum clock frequency supported by the 74AC257TTR is typically around 100MHz, but this can vary depending on the specific application and operating conditions.
• How do I handle power sequencing when using the 74AC257TTR in a system with multiple power rails?
  To avoid latch-up or damage, ensure that the power rails are sequenced such that the VCC rail is powered up before the input signals, and powered down after the input signals.