CD54HC21F3A datasheet by Texas Instruments

CD54HC21F3A Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for CD54HC21F3A?
  The recommended operating voltage range for CD54HC21F3A is 2V to 6V, with a typical voltage of 5V.
• How do I handle the input voltage thresholds for the CD54HC21F3A?
  The input voltage thresholds for the CD54HC21F3A are typically 0.5V to 1.5V for a low input and 3.5V to 5V for a high input. Ensure that your input signals meet these thresholds to ensure proper operation.
• What is the maximum frequency of operation for the CD54HC21F3A?
  The maximum frequency of operation for the CD54HC21F3A is typically 25 MHz, but this can vary depending on the specific application and operating conditions.
• How do I ensure proper power sequencing for the CD54HC21F3A?
  To ensure proper power sequencing, apply power to the VCC pin before applying any input signals. Also, ensure that the power supply is stable and within the recommended operating voltage range.
• What is the typical propagation delay for the CD54HC21F3A?
  The typical propagation delay for the CD54HC21F3A is around 10 ns to 15 ns, depending on the specific application and operating conditions.