Silicon Oscillator with Low-Power Frequency Select and Enable

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The MAX7383 dual-speed silicon oscillator replaces ceramic resonators, crystals, and crystal-oscillator modules as the primary and secondary clock source for microcontrollers in 3V, 3.3V, and 5V applications. The MAX7383 features a factory-programmed high-speed oscillator, a 32.768kHz oscillator, a clock enable input, and a clock-selector input. The clock output can be switched at any time between the high-speed clock and the 32.768kHz clock for low-power operation. Switchover is synchronized internally to provide glitch-free clock switching.

Unlike typical crystal and ceramic-resonator oscillator circuits, the MAX7383 is resistant to vibration and EMI. The high-output-drive current and absence of high-impedance nodes makes the oscillator less susceptible to dirty or humid operating conditions. With a wide operating temperature range, the MAX7383 is a good choice for demanding home appliance and automotive environments.

The MAX7383 is available with factory-programmed frequencies ranging from 10MHz to 16MHz. See the full data sheet for standard frequencies and contact the factory for custom frequencies and UVLO thresholds.

The MAX7383 is available in a 5-pin SOT23 package. The MAX7383 operating temperature range is -40°C to +125°C.

MAX7383: Typical Application Circuit MAX7383: Typical Application Circuit Enlarge+

Key Features

  • 2.7V to 5.5V Operation
  • High-Speed Oscillator from 10MHz to 16MHz
  • Low-Speed 32.768kHz Oscillator
  • Glitch-Free Clock-Speed Switching
  • ±10mA Clock-Output Drive Capability
  • 2.5% Initial Accuracy
  • ±50ppm/°C (typ) Frequency Drift
  • 50% Duty Cycle
  • 5ns Output Rise and Fall Time
  • Clock Enable Input
  • 4mA Operating Current at 16MHz
  • 13µA Operating Current at 32.768kHz
  • Typical 0.5µA Shutdown Supply Current
  • -40°C to +125°C Temperature Range
  • Small 5-Pin SOT23 Package


  • Appliances and Controls
  • Automotive
  • Consumer Products
  • Handheld Products
  • Microcontroller Systems
  • Portable Equipment
  • White Goods
Request Reliability Report for: MAX7383 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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