74HC245D datasheet by NXP Semiconductors

74HC245D Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the 74HC245D?
  The maximum frequency of operation for the 74HC245D is 40 MHz, but it can vary depending on the capacitive load and the operating voltage.
• How do I ensure that the 74HC245D is properly powered?
  To ensure proper power supply, connect VCC to a stable 2.0 to 6.0 V power supply, and GND to a reliable ground connection. Decouple the power supply with a 0.1 μF capacitor to reduce noise.
• What is the maximum current that the 74HC245D can sink or source?
  The 74HC245D can sink or source up to 25 mA per output pin, but the total current should not exceed 100 mA to prevent overheating.
• How do I handle the enable inputs (OE, DIR) to ensure proper operation?
  The enable inputs (OE, DIR) should be connected to a valid logic level (VCC or GND) to ensure proper operation. Floating or unconnected enable inputs can cause unpredictable behavior.
• What is the propagation delay of the 74HC245D?
  The propagation delay of the 74HC245D is typically around 10 ns, but it can vary depending on the operating voltage, temperature, and capacitive load.