SN74HCT138PW datasheet by Texas Instruments

SN74HCT138PW Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HCT138PW?
  The maximum frequency of operation for the SN74HCT138PW is 40 MHz.
• How do I ensure that the SN74HCT138PW is properly powered?
  Ensure that the VCC pin is connected to a stable 5V power supply, and the GND pin is connected to a reliable ground. Also, decouple the power supply with a 0.1uF capacitor to reduce noise.
• What is the maximum current that the SN74HCT138PW can sink or source?
  The SN74HCT138PW can sink or source up to 6mA of current per output pin.
• How do I handle the enable inputs (E1, E2, E3) to ensure proper operation?
  The enable inputs (E1, E2, E3) must be connected to a valid logic level (either VCC or GND) to ensure proper operation. Floating or unconnected enable inputs can cause unpredictable behavior.
• What is the propagation delay of the SN74HCT138PW?
  The propagation delay of the SN74HCT138PW is typically around 10ns, but can vary depending on the operating conditions and load capacitance.