SN74LS109AN3 datasheet by Texas Instruments

SN74LS109AN3 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the SN74LS109AN?
  The recommended operating voltage range for the SN74LS109AN is 4.75V to 5.25V, although it can operate from 4.5V to 5.5V with reduced performance.
• How do I handle the unused inputs on the SN74LS109AN?
  Unused inputs on the SN74LS109AN should be tied to a logic high or low level to prevent floating inputs, which can cause unpredictable behavior.
• What is the maximum clock frequency that the SN74LS109AN can handle?
  The maximum clock frequency that the SN74LS109AN can handle is 2 MHz, although this can vary depending on the specific application and operating conditions.
• Can I use the SN74LS109AN in a 3.3V system?
  No, the SN74LS109AN is not recommended for use in 3.3V systems, as it is designed for 5V operation and may not function correctly at lower voltages.
• How do I ensure that the SN74LS109AN is properly powered?
  To ensure proper operation, the SN74LS109AN should be powered from a stable 5V power supply with adequate decoupling capacitors to reduce noise and voltage droop.