M74HC173B1R datasheet by STMicroelectronics

M74HC173B1R Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for M74HC173B1R?
  The recommended operating voltage range for M74HC173B1R is 2V to 6V, with a typical voltage of 5V.
• How do I handle the asynchronous clear input (CLR) in M74HC173B1R?
  The asynchronous clear input (CLR) should be tied to VCC through a pull-up resistor or connected to a logic high signal to prevent accidental clearing of the counter. When CLR is low, the counter is reset to zero.
• What is the maximum clock frequency that M74HC173B1R can handle?
  The maximum clock frequency that M74HC173B1R can handle is 25 MHz, but this may vary depending on the operating voltage and load capacitance.
• How do I ensure that the counter outputs (Q0-Q3) are stable during power-up?
  To ensure stable counter outputs during power-up, it is recommended to add a power-on reset (POR) circuit or a reset signal to the CLR input to initialize the counter to zero.
• Can I use M74HC173B1R as a synchronous counter?
  No, M74HC173B1R is an asynchronous counter, meaning that the clock signal is not synchronized with the counter outputs. If you need a synchronous counter, consider using a different device, such as the 74HC393.