SN74HC151D datasheet by Texas Instruments

SN74HC151D Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC151D?
  The maximum frequency of operation for the SN74HC151D is 40 MHz.
• How do I ensure that the SN74HC151D is properly powered?
  The SN74HC151D requires a single 2-V to 6-V power supply, and it is recommended to use a decoupling capacitor of 0.1 μF to 1 μF between VCC and GND to ensure proper operation.
• What is the propagation delay time for the SN74HC151D?
  The propagation delay time for the SN74HC151D is typically around 10 ns to 20 ns, depending on the operating frequency and voltage.
• Can I use the SN74HC151D in a 3.3-V system?
  Yes, the SN74HC151D can operate at 3.3 V, but the input voltage thresholds may vary, and the output voltage levels may not be compatible with 3.3-V logic levels.
• How do I handle the enable inputs (E1 and E2) for the SN74HC151D?
  The enable inputs (E1 and E2) must be connected to a valid logic level (either VCC or GND) to ensure proper operation. Leaving them unconnected or floating can cause unpredictable behavior.