M74HC688M1R datasheet by STMicroelectronics

M74HC688M1R Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the M74HC688M1R?
  The recommended operating voltage range for the M74HC688M1R is 2V to 6V, with a typical operating voltage of 5V.
• How do I handle the output enable (OE) pin in my design?
  The output enable (OE) pin should be connected to a logic low (GND) to enable the outputs. If left unconnected or tied to a logic high (VCC), the outputs will be in a high-impedance state.
• What is the maximum clock frequency supported by the M74HC688M1R?
  The maximum clock frequency supported by the M74HC688M1R is 25 MHz, but this can vary depending on the operating voltage and load conditions.
• Can I use the M74HC688M1R in a 3.3V system?
  Yes, the M74HC688M1R can be used in a 3.3V system, but the maximum clock frequency may be reduced to 10 MHz or less, depending on the specific application and load conditions.
• How do I ensure reliable operation of the M74HC688M1R in high-temperature environments?
  To ensure reliable operation of the M74HC688M1R in high-temperature environments, it is recommended to follow proper PCB design and layout guidelines, use a heat sink if necessary, and ensure adequate power supply decoupling.