SN74ACT8990FNR datasheet by Texas Instruments

SN74ACT8990FNR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the SN74ACT8990FNR?
  The recommended operating voltage range for the SN74ACT8990FNR is 4.5V to 5.5V, with a typical voltage of 5V.
• How do I ensure signal integrity when using the SN74ACT8990FNR?
  To ensure signal integrity, use a low-impedance PCB design, keep signal traces short, and use termination resistors as needed. Also, follow the recommended layout guidelines in the datasheet.
• Can I use the SN74ACT8990FNR in a 3.3V system?
  While the SN74ACT8990FNR is specified for 5V operation, it can be used in a 3.3V system with some limitations. However, the output voltage will be reduced, and the device may not meet all the specified timing parameters.
• How do I handle power sequencing when using the SN74ACT8990FNR?
  To avoid latch-up or other issues, ensure that the power supply voltage (VCC) is applied before the input signals, and that the input signals are stable before the clock signal is applied.
• What is the maximum clock frequency supported by the SN74ACT8990FNR?
  The maximum clock frequency supported by the SN74ACT8990FNR is 100 MHz, but this can vary depending on the specific application and operating conditions.