SN74HC138NE4 datasheet by Texas Instruments

SN74HC138NE4 Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC138NE4?
  The maximum frequency of operation for the SN74HC138NE4 is 25 MHz.
• How do I ensure that the SN74HC138NE4 is properly powered?
  To ensure proper power supply, connect VCC to a 2.0-V to 6.0-V power supply, and GND to the system ground. Decouple the power supply with a 0.1-μF capacitor.
• What is the maximum current that the SN74HC138NE4 can sink or source?
  The maximum current that the SN74HC138NE4 can sink or source is 25 mA per output pin.
• How do I handle unused inputs on the SN74HC138NE4?
  Unused inputs should be tied to VCC or GND to prevent floating inputs, which can cause unpredictable behavior.
• Is the SN74HC138NE4 compatible with 3.3-V and 5-V logic?
  Yes, the SN74HC138NE4 is compatible with both 3.3-V and 5-V logic, making it suitable for use in a wide range of applications.