M74HC4538B1R datasheet by STMicroelectronics

M74HC4538B1R Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the M74HC4538B1R?
  The maximum frequency of operation for the M74HC4538B1R is 40 MHz.
• How do I ensure that the M74HC4538B1R is properly powered?
  The M74HC4538B1R requires a power supply voltage (VCC) of 2.0 V to 6.0 V, and it is recommended to decouple the power supply with a 0.1 μF capacitor.
• What is the propagation delay of the M74HC4538B1R?
  The propagation delay of the M74HC4538B1R is typically 10 ns, but it can vary depending on the operating frequency and load capacitance.
• Can I use the M74HC4538B1R in a 3.3 V system?
  Yes, the M74HC4538B1R can operate at 3.3 V, but the input and output voltage levels must be adjusted accordingly to ensure proper operation.
• How do I handle the enable inputs (E1 and E2) of the M74HC4538B1R?
  The enable inputs (E1 and E2) must be connected to a valid logic level (either VCC or GND) to ensure proper operation. Leaving them unconnected or floating can cause unpredictable behavior.