M74HC123B1R datasheet by STMicroelectronics

M74HC123B1R Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the M74HC123B1R?
  The recommended operating voltage range for the M74HC123B1R is 2V to 6V.
• How do I ensure the M74HC123B1R is properly powered?
  To ensure proper operation, the M74HC123B1R requires a stable power supply with a decoupling capacitor (e.g., 100nF) connected between VCC and GND, as close to the device as possible.
• What is the maximum clock frequency supported by the M74HC123B1R?
  The M74HC123B1R can operate at clock frequencies up to 25MHz.
• How do I handle the asynchronous reset input (MR) on the M74HC123B1R?
  The asynchronous reset input (MR) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure proper reset operation.
• What is the purpose of the Q0-Q3 outputs on the M74HC123B1R?
  The Q0-Q3 outputs are the binary counter outputs, which provide the current count value.