CD74HC85M datasheet by Texas Instruments

CD74HC85M Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD74HC85M can handle?
  The CD74HC85M can handle clock frequencies up to 10 MHz.
• How do I ensure that the CD74HC85M is properly powered?
  The CD74HC85M requires a single 2V to 6V power supply, and it's recommended to use a decoupling capacitor of 0.1uF to 1uF between VCC and GND to ensure proper power supply decoupling.
• What is the propagation delay of the CD74HC85M?
  The propagation delay of the CD74HC85M is typically around 10ns to 20ns, depending on the operating voltage and temperature.
• Can I use the CD74HC85M in a 3.3V system?
  Yes, the CD74HC85M can operate at 3.3V, but the input voltage thresholds may vary, and the output voltage levels may not be compatible with 3.3V logic levels.
• How do I handle the asynchronous reset input (R) of the CD74HC85M?
  The asynchronous reset input (R) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure proper reset operation. A low level on the R input resets the counter.