CD74HC173M96 datasheet by Texas Instruments

CD74HC173M96 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the CD74HC173M96?
  The maximum clock frequency for the CD74HC173M96 is 25 MHz, but it can vary depending on the operating voltage and temperature. It's recommended to check the timing diagrams and switching characteristics in the datasheet to ensure the desired clock frequency meets the device's requirements.
• How do I handle the asynchronous clear (CLR) input?
  The asynchronous clear (CLR) input 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 also recommended to use a debouncing circuit to ensure a clean CLR signal.
• Can I use the CD74HC173M96 as a binary counter?
  Yes, the CD74HC173M96 can be used as a binary counter by connecting the Q3 output to the CLK input, and using the CLR input to reset the counter. However, this configuration may not be suitable for all applications, and the datasheet should be consulted for specific implementation details.
• What is the recommended power-on reset (POR) circuit for the CD74HC173M96?
  A simple POR circuit can be implemented using a resistor, capacitor, and diode connected to the VCC pin. The capacitor should be chosen to ensure a minimum reset pulse width of 10 μs. The datasheet provides a recommended POR circuit diagram and component values.
• How do I ensure proper noise immunity and signal integrity when using the CD74HC173M96?
  To ensure proper noise immunity and signal integrity, it's recommended to use a low-impedance power supply, decouple the VCC pin with a 0.1 μF capacitor, and use series resistors on the input signals to reduce ringing and overshoot. Additionally, the PCB layout should be designed to minimize signal loops and crosstalk.