CD54HC173F3A datasheet by Texas Instruments

CD54HC173F3A Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with CD54HC173F3A?
  The maximum clock frequency for CD54HC173F3A is 25 MHz. However, it's recommended to check the specific application and operating conditions to ensure reliable operation.
• How do I handle the asynchronous clear input (CLR) in CD54HC173F3A?
  The asynchronous clear input (CLR) should be tied to VCC or GND through a pull-up or pull-down resistor, respectively, to prevent unwanted clearing of the counters. It's recommended to use a 1 kΩ to 10 kΩ resistor for this purpose.
• What is the recommended power-on reset (POR) circuit for CD54HC173F3A?
  A simple POR circuit can be implemented using a resistor, capacitor, and diode. The capacitor should be connected between VCC and GND, and the resistor should be connected between VCC and the CLR input. The diode should be connected between the CLR input and GND to prevent backflow of current.
• How do I ensure proper synchronization of the counters in CD54HC173F3A?
  To ensure proper synchronization, the clock input (CLK) should be synchronized with the enable input (EN) and the load input (LOAD). This can be done by using a common clock source for all counters and ensuring that the enable and load inputs are asserted only when the clock is low.
• What is the maximum output current that can be sourced or sunk by CD54HC173F3A?
  The maximum output current that can be sourced or sunk by CD54HC173F3A is ±5 mA. However, it's recommended to limit the output current to ±2 mA to ensure reliable operation and prevent overheating.