SN74HC02N datasheet by Texas Instruments

SN74HC02N Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC02N?
  The maximum frequency of operation for the SN74HC02N is typically around 100 MHz, but this can vary depending on the specific application and operating conditions.
• How do I ensure that the SN74HC02N is properly powered?
  To ensure proper operation, the SN74HC02N should be powered with a stable voltage supply between 2V and 6V, with a recommended operating voltage of 5V. Additionally, decoupling capacitors should be used to filter out noise and ensure stable operation.
• What is the input voltage threshold for the SN74HC02N?
  The input voltage threshold for the SN74HC02N is typically around 1.5V for a logic high and 0.5V for a logic low, but this can vary depending on the specific application and operating conditions.
• Can I use the SN74HC02N in a 3.3V system?
  Yes, the SN74HC02N can be used in a 3.3V system, but the output voltage will be limited to around 3.3V. Additionally, the input voltage threshold may be affected, and the device may not operate at the same speed as it would at 5V.
• How do I handle unused inputs on the SN74HC02N?
  Unused inputs on the SN74HC02N should be tied to a logic high or logic low level to prevent floating inputs, which can cause unpredictable behavior. It is recommended to tie unused inputs to VCC or GND through a 1kΩ resistor.