CD74HC221NSR datasheet by Texas Instruments

CD74HC221NSR Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the CD74HC221NSR?
  The maximum frequency of operation for the CD74HC221NSR is 25 MHz.
• Can I use the CD74HC221NSR in a 5V system?
  Yes, the CD74HC221NSR is compatible with 5V systems, but it's recommended to use a voltage regulator to ensure a stable 5V supply.
• How do I handle the power-up and power-down sequences for the CD74HC221NSR?
  It's recommended to power up the VCC pin first, followed by the input signals, and power down the input signals before the VCC pin to prevent latch-up.
• What is the recommended operating temperature range for the CD74HC221NSR?
  The recommended operating temperature range for the CD74HC221NSR is -40°C to 85°C.
• Can I use the CD74HC221NSR in a high-reliability or aerospace application?
  The CD74HC221NSR is a commercial-grade device and may not meet the requirements for high-reliability or aerospace applications. Consider using a radiation-hardened or high-reliability version of the device for such applications.