M74HC155RM13TR datasheet by STMicroelectronics

M74HC155RM13TR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for M74HC155RM13TR?
  The recommended operating voltage range for M74HC155RM13TR is 2V to 6V, with a typical voltage of 5V.
• How do I handle the unused inputs of the M74HC155RM13TR?
  Unused inputs of the M74HC155RM13TR should be tied to VCC or GND to prevent floating inputs and ensure proper device operation.
• What is the maximum clock frequency that the M74HC155RM13TR can handle?
  The maximum clock frequency that the M74HC155RM13TR can handle is 25 MHz, but this may vary depending on the specific application and operating conditions.
• Is the M74HC155RM13TR compatible with 3.3V logic?
  Yes, the M74HC155RM13TR is compatible with 3.3V logic, but the output voltage levels may not be fully compatible with 3.3V systems. A voltage translator or level shifter may be required in some cases.
• How do I ensure that the M74HC155RM13TR is properly powered on and off?
  To ensure proper power-on and power-off sequencing, the VCC pin should be powered on before the clock signal, and the clock signal should be stable before applying input data.