M74HC161RM13TR datasheet by STMicroelectronics

M74HC161RM13TR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for M74HC161RM13TR?
  The recommended operating voltage range for M74HC161RM13TR is 2V to 6V, with a typical voltage of 5V.
• How do I handle the asynchronous reset input (MR) in M74HC161RM13TR?
  The asynchronous reset input (MR) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure proper operation. A low level on MR resets the counter.
• What is the maximum clock frequency that M74HC161RM13TR can handle?
  The maximum clock frequency that M74HC161RM13TR can handle is 25 MHz at 5V and 10 MHz at 3.3V.
• How do I synchronize the clock input (CP) with the data inputs (A, B, C, D) in M74HC161RM13TR?
  The clock input (CP) should be synchronized with the data inputs (A, B, C, D) to ensure proper counting. A clock transition (rising or falling edge) should occur when the data inputs are stable.
• What is the purpose of the enable input (ENP, ENT) in M74HC161RM13TR?
  The enable inputs (ENP, ENT) allow the counter to be enabled or disabled. When ENP and ENT are both high, the counter is enabled. When either ENP or ENT is low, the counter is disabled.