SN74HC20D datasheet by Texas Instruments

SN74HC20D Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC20D?
  The maximum frequency of operation for the SN74HC20D is 25 MHz.
• Can I use the SN74HC20D in a 5V system?
  Yes, the SN74HC20D is compatible with 5V systems, but it's recommended to use a voltage regulator to ensure a stable 5V supply.
• How do I handle the output enable (OE) pin?
  The output enable (OE) pin is active-low, meaning it should be connected to GND to enable the outputs. Leaving it unconnected or connecting it to VCC will disable the outputs.
• What is the maximum current that the SN74HC20D can sink or source?
  The SN74HC20D can sink or source up to 25 mA per output pin.
• Can I use the SN74HC20D in a 3.3V system?
  Yes, the SN74HC20D is compatible with 3.3V systems, but the output voltage levels may not be compatible with 3.3V logic. Use a level translator or voltage regulator if necessary.