SN54HC05J datasheet by Texas Instruments

SN54HC05J Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN54HC05J?
  The maximum operating frequency of the SN54HC05J is 25 MHz, but it can operate up to 50 MHz with a reduced voltage supply (VCC) of 4.5V.
• How do I handle the unused inputs of the SN54HC05J?
  Unused inputs of the SN54HC05J should be tied to VCC or GND to prevent them from floating and causing unwanted oscillations or power consumption.
• What is the power consumption of the SN54HC05J?
  The power consumption of the SN54HC05J depends on the operating frequency and voltage supply. At 25 MHz and 5V, the typical power consumption is around 20-30 mW.
• Can I use the SN54HC05J in a 3.3V system?
  Yes, the SN54HC05J can operate with a voltage supply (VCC) as low as 2V, but the maximum operating frequency will be reduced to 12 MHz at 3.3V.
• How do I ensure the SN54HC05J is properly decoupled?
  A 0.1 μF ceramic capacitor should be placed as close as possible to the VCC pin of the SN54HC05J to decouple the power supply and reduce noise.