DS1338U-33+ datasheet by Maxim Integrated Products

DS1338U-33+ Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1338U-33+?
  The recommended power-up sequence is to apply VCC first, followed by a valid clock signal, and then the reset signal (RST) can be released.
• How do I ensure the accuracy of the clock output?
  To ensure accuracy, use a high-quality crystal oscillator, keep the crystal and oscillator circuitry away from noise sources, and use a decoupling capacitor between VCC and GND.
• What is the maximum frequency deviation of the DS1338U-33+?
  The maximum frequency deviation is ±100 ppm over the operating temperature range of -40°C to +85°C.
• Can I use the DS1338U-33+ as a clock source for a microcontroller?
  Yes, the DS1338U-33+ can be used as a clock source for a microcontroller. The clock output is a CMOS-compatible signal that can drive a microcontroller's clock input.
• How do I reset the DS1338U-33+?
  The DS1338U-33+ can be reset by asserting the RST pin low for at least 100 ns. This resets the clock output to a stable state.