SN74HC85AN datasheet by Texas Instruments

SN74HC85AN Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the SN74HC85AN?
  The recommended operating voltage range for the SN74HC85AN is 2V to 6V, with a typical voltage of 5V.
• How do I handle the unused inputs on the SN74HC85AN?
  Unused inputs on the SN74HC85AN should be tied to a logic level (either VCC or GND) to prevent floating inputs and ensure proper device operation.
• What is the maximum clock frequency that the SN74HC85AN can handle?
  The maximum clock frequency that the SN74HC85AN can handle is 30 MHz, but this can vary depending on the specific application and operating conditions.
• Can I use the SN74HC85AN in a 3.3V system?
  Yes, the SN74HC85AN can be used in a 3.3V system, but the output voltage levels may not be compatible with 3.3V logic. A voltage translator or level shifter may be required to ensure proper operation.
• How do I ensure that the SN74HC85AN is properly powered?
  To ensure proper power-up and operation, the SN74HC85AN should be powered up slowly (dv/dt < 10 V/μs) and the power supply should be decoupled with a 0.1 μF capacitor.