CD74HC21M datasheet by Texas Instruments

CD74HC21M Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the CD74HC21M?
  The CD74HC21M can operate at frequencies up to 25 MHz.
• How do I ensure that the CD74HC21M is properly powered?
  The CD74HC21M requires a power supply voltage (VCC) of 2.0 V to 6.0 V, and it is recommended to decouple the power supply with a 0.1 μF capacitor.
• What is the maximum input voltage that the CD74HC21M can handle?
  The maximum input voltage that the CD74HC21M can handle is 6.0 V, and exceeding this voltage may cause damage to the device.
• How do I handle the output of the CD74HC21M?
  The output of the CD74HC21M is an open-drain output, which means it can sink current but cannot source current. An external pull-up resistor is required to pull the output high.
• Is the CD74HC21M compatible with 3.3 V and 5 V logic systems?
  Yes, the CD74HC21M is compatible with both 3.3 V and 5 V logic systems, making it a versatile component for a wide range of applications.