SN54LS197J datasheet by Texas Instruments

SN54LS197J Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN54LS197J can handle?
  The maximum clock frequency of the SN54LS197J is 25 MHz, but it can vary depending on the operating voltage and temperature. It's recommended to check the timing diagrams and specifications in the datasheet for more information.
• How do I ensure that the SN54LS197J is properly powered and decoupled?
  To ensure proper power and decoupling, connect the VCC pin to a stable 5V power supply, and decouple the power pins with 0.1uF ceramic capacitors. Additionally, use a 10uF electrolytic capacitor to filter out any noise on the power line.
• What is the maximum current that the SN54LS197J can sink or source?
  The SN54LS197J can sink up to 16mA and source up to 2mA per output pin. However, it's recommended to check the absolute maximum ratings in the datasheet to ensure that the device is not damaged.
• How do I handle the asynchronous reset input (R) on the SN54LS197J?
  The asynchronous reset input (R) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure that the device is properly reset. When the reset input is low, the device is reset, and all outputs are set to a high-impedance state.
• What is the propagation delay of the SN54LS197J?
  The propagation delay of the SN54LS197J varies depending on the operating voltage and temperature. Typically, the propagation delay is around 10-20ns, but it's recommended to check the timing diagrams and specifications in the datasheet for more information.