SN54LS273J datasheet by Texas Instruments

SN54LS273J Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN54LS273J can handle?
  The maximum clock frequency of the SN54LS273J is 35 MHz, but it can vary depending on the specific application and operating conditions.
• How do I ensure that the SN54LS273J is properly powered and decoupled?
  To ensure proper power and decoupling, use a 5V power supply, decouple the power pins with 0.1uF and 10uF capacitors, and use a 10kΩ pull-up resistor on the clock input.
• What is the maximum current that the SN54LS273J can sink or source?
  The SN54LS273J can sink up to 16mA and source up to 12mA per output pin, but it's recommended to limit the current to 8mA per pin to ensure reliable operation.
• How do I handle the asynchronous reset input (CLR) in my design?
  The CLR input should be tied to VCC through a 1kΩ resistor and a 0.01uF capacitor to ensure proper reset operation. A pull-up resistor is not necessary.
• Can I use the SN54LS273J in a 3.3V system?
  No, the SN54LS273J is a 5V device and is not compatible with 3.3V systems. Using it in a 3.3V system may result in unreliable operation or damage to the device.