74HC251D,653 datasheet by NXP Semiconductors

74HC251D,653 Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the 74HC251D,653?
  The maximum operating frequency of the 74HC251D,653 is 30 MHz, but it can vary depending on the supply voltage and load conditions.
• Can I use the 74HC251D,653 in a 5V system?
  Yes, the 74HC251D,653 can operate with a supply voltage range of 2V to 6V, making it suitable for 5V systems.
• How do I handle the enable inputs (E1 and E2) when not in use?
  When not in use, the enable inputs (E1 and E2) should be tied to a fixed logic level (either VCC or GND) to prevent unwanted switching.
• What is the propagation delay of the 74HC251D,653?
  The propagation delay of the 74HC251D,653 is typically around 10ns to 15ns, but it can vary depending on the supply voltage and temperature.
• Can I use the 74HC251D,653 as a level shifter?
  Yes, the 74HC251D,653 can be used as a level shifter, but it's not recommended as it's not designed for that purpose. Instead, use a dedicated level shifter IC for reliable operation.