LM1894MX/NOPB datasheet by Texas Instruments

LM1894MX/NOPB Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the LM1894MX/NOPB?
  The recommended operating voltage range for the LM1894MX/NOPB is 4.75V to 5.25V.
• How do I ensure the LM1894MX/NOPB is stable and oscillates at the desired frequency?
  To ensure stability and oscillation at the desired frequency, it's essential to follow the recommended component values and PCB layout guidelines provided in the datasheet, and to use a high-quality crystal oscillator with a suitable load capacitance.
• What is the maximum clock frequency that the LM1894MX/NOPB can support?
  The LM1894MX/NOPB can support clock frequencies up to 100 MHz.
• How do I handle the power-up sequence for the LM1894MX/NOPB?
  The power-up sequence for the LM1894MX/NOPB should be carefully controlled to ensure that the voltage supply (VCC) is stable and within the recommended range before enabling the oscillator. A soft-start circuit or a power-on reset circuit can be used to ensure a controlled power-up sequence.
• What are the key considerations for PCB layout and design when using the LM1894MX/NOPB?
  Key considerations for PCB layout and design when using the LM1894MX/NOPB include keeping the crystal oscillator circuitry away from noise sources, using a ground plane to reduce noise, and minimizing the length of the clock signal traces to reduce signal degradation.