M74HC393B1R datasheet by STMicroelectronics

M74HC393B1R Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for M74HC393B1R?
  The recommended operating voltage range for M74HC393B1R is 2V to 6V, with a typical voltage of 5V.
• How do I ensure correct power sequencing when using M74HC393B1R?
  To ensure correct power sequencing, apply power to the VCC pin before applying any input signals, and ensure that the power supply is stable before enabling the clock input.
• What is the maximum clock frequency that M74HC393B1R can handle?
  The maximum clock frequency that M74HC393B1R can handle is 30 MHz, but this can vary depending on the operating voltage and load capacitance.
• Can I use M74HC393B1R in a 3.3V system?
  Yes, M74HC393B1R can be used in a 3.3V system, but the output voltage will be limited to 3.3V, and the device may not operate at the maximum clock frequency.
• How do I handle the asynchronous reset input (MR) in M74HC393B1R?
  The asynchronous reset input (MR) should be tied to VCC through a pull-up resistor or connected to a reset signal that is active-low. This input should not be left floating.