SN74HC27D datasheet by Texas Instruments

SN74HC27D Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC27D?
  The maximum frequency of operation for the SN74HC27D is typically around 100 MHz, but this can vary depending on the specific application and operating conditions.
• How do I ensure that the SN74HC27D is properly powered and decoupled?
  To ensure proper operation, the SN74HC27D should be powered from a stable, low-noise power supply, and decoupling capacitors (e.g. 0.1uF) should be placed as close as possible to the device's power pins.
• What is the maximum current that the SN74HC27D can sink or source?
  The SN74HC27D can sink or source up to 25mA of current per output, but this should be limited to 15mA per output for reliable operation.
• How do I handle unused inputs on the SN74HC27D?
  Unused inputs on the SN74HC27D should be tied to a valid logic level (either VCC or GND) to prevent floating inputs and ensure proper operation.
• Is the SN74HC27D compatible with 5V and 3.3V systems?
  Yes, the SN74HC27D is compatible with both 5V and 3.3V systems, but the output voltage levels will be dependent on the supply voltage (VCC).