CD74HC151E datasheet by Texas Instruments

CD74HC151E Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the CD74HC151E?
  The CD74HC151E can operate at frequencies up to 25 MHz.
• How do I ensure that the CD74HC151E is properly powered?
  The CD74HC151E requires a single power supply voltage (VCC) of 2.0 to 6.0 volts, and it is recommended to decouple the power supply with a 0.1 μF capacitor.
• What is the propagation delay time for the CD74HC151E?
  The propagation delay time for the CD74HC151E is typically around 10-15 ns, but this can vary depending on the operating frequency and load conditions.
• Can I use the CD74HC151E in a 3.3V system?
  Yes, the CD74HC151E can operate at 3.3V, but the output voltage levels may not be compatible with 3.3V logic. It's recommended to use a level translator or voltage regulator to ensure compatibility.
• How do I handle the enable inputs (E1 and E2) for the CD74HC151E?
  The enable inputs (E1 and E2) are active-low, meaning that they must be pulled low to enable the multiplexer. If not used, they should be tied high to prevent unwanted switching.