CD74HC251M datasheet by Texas Instruments

CD74HC251M Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the CD74HC251M?
  The maximum frequency of operation for the CD74HC251M is 25 MHz.
• Can I use the CD74HC251M in a 5V system?
  Yes, the CD74HC251M 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 enable inputs (E1 and E2) when not in use?
  When not in use, the enable inputs (E1 and E2) should be tied to VCC or GND to prevent floating inputs, which can cause unpredictable behavior.
• What is the propagation delay time for the CD74HC251M?
  The propagation delay time for the CD74HC251M is typically around 10-15 ns, but this can vary depending on the operating conditions and load capacitance.
• Can I use the CD74HC251M in a 3.3V system?
  Yes, the CD74HC251M is compatible with 3.3V systems, but the output voltage will be limited to 3.3V, and the input voltage thresholds may be affected.