SiTime, Silicon MEMS Oscillators and Clock Generators

SiT2019B: High Frequency, High Temp Single-chip One-output Clock Generator

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The SiT2019B is the industry's first high frequency, high temp, one-output clock generator with embedded MEMS resonator.  This device features uncompromising combination of low power consumption, excellent stability, flexible supply voltage and the shortest lead time for high frequency applicaitons.  It comes in a small, 5-pin SOT23-5 package that offers the best board level solder joint reliability and enables low cost, optical-ONLY board level inspection.

For the same device in SMD packages, refer to the SiT8919B clock oscillator.


Freq. Range (MHz)
115.194001 to 117.810999
122.705001 to 123.021999
118.038001 to 118.593999
123.348001 to 137.000000
118.743001 to 122.141999

Freq. Stability (PPM) ±20, ±25, ±30, ±50
Temp Range (°C) -40 to +105, -40 to +125
Vibration Sensitivity 0.1 ppb/g (G-sensitivity)
Configurable Rise/Fall Time 0.25 to 1.5  ns (output load and voltage dependent)
Supply Voltage (V) 1.8, 2.5 to 3.3
Package LxWxH (mm) SOT23-5(2.9 x 2.8 x 1.2)
Status Production
  • Industrial sensors
  • Motor servo
  • Industrial control systems
  • High temp networking gears
  • Medical video CAM
  • Asset tracking systems

Features Benefits
  • +/-20 PPM over automotive temp (-40 to 125 °C)
  • Better timing margin ideal for outdoor and high temp operating environment
  • 0.1 ppb/g low G-sensitivity
  • Improved system performance under vibration
  • Carrrier drop-test compliance (STB, etc.)
  • 70 g shock and 50 kg vibration
  • Best system relability in harsh environment
  • Configurable rise/fall time
  • Optimize EMI to reduce interference to other subsystems
  • SOT23-5 package
  • Best board level soldering joint reliability
  • Easy, low cost optical only board level inspection of solder joint
  • Ultra fast lead time (2 to 4 weeks)
  • Reduce inventory overhead
  • Mitigate shortage risks

Coming Soon 


Measured Performance Reports on SiT2019B

The following PDF reports contain details of actual measurements on SiTime devices at the frequencies mentioned below and are intended to supplement the datasheet. Measurement conditions and equipment are specified in the individual files. If you desire a more detailed report than the ones provided below, please·contact your local SiTime sales representative·or email·salessupport@sitime.com.


Subject to change without notice


Please contact your local SiTime sales representative or email salessupport@sitime.com.


Subject to change without notice


List of Supported Frequencies


Any frequency within the min and max values in the above table are supported with 6 decimal places of accuracy.
Please contact SiTime for frequencies that are not listed in the tables above.


1.8V LVCMOS IBIS icon SiT2019 1p8v
2.5V LVCMOS IBIS icon SiT2019 2p5v
2.8V LVCMOS IBIS icon SiT2019 2p8v
3.0V LVCMOS IBIS icon SiT2019 3p0v
3.3V LVCMOS IBIS icon SiT2019 3p3v
2.25V - 3.63V LVCMOS IBIS icon SiT2019 xx