SN74121D datasheet by Texas Instruments

SN74121D Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74121D?
  The maximum frequency of operation for the SN74121D is 25 MHz.
• Can I use the SN74121D in a 3.3V system?
  Yes, the SN74121D can operate from a 3.3V supply, but the output voltage swing will be reduced, and the device may not meet the specified timing parameters.
• How do I ensure that the SN74121D is properly terminated?
  To ensure proper termination, connect a 50-ohm resistor between the output pin and VCC, and a 50-ohm resistor between the output pin and GND.
• What is the maximum capacitive load that the SN74121D can drive?
  The SN74121D can drive up to 100 pF of capacitive load, but excessive capacitive loading can cause oscillations and affect the device's performance.
• Can I use the SN74121D in a high-temperature environment?
  The SN74121D is rated for operation up to 70°C, but the device's performance may degrade at higher temperatures. For high-temperature applications, consider using a device with a higher temperature rating.