SiTime, Silicon MEMS Oscillators and Clock Generators

SiT8919B: High Frequency, High Temperature Oscillator

E-mail Print

The SiT8919B extends frequency support up to 137 MHz while maintaining excellent stability (±20 PPM) at high temperature (up to 125°C) in the smallest 2.0 x 1.6 mmxmm package, a combination that is not readily available from quartz. This device also features the industry's best vibration sensitivity, and shock and vibration resistance.

The SiT8919 comes in industry standard packages and footprints, and therefore replaces quartz without any design changes.

For the same device in a SOT23-5 package, refer to the SiT2019B clock generator.


Freq. Range (MHz)
115.194001 to 117.801999
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 to1.5 ns (output load and voltage dependent)
Supply Voltage (V) 1.8, 2.5 to 3.3
Package LxWxH (mm) 2.0x1.6x0.75, 2.5x2.0x0.75, 3.2x2.5x0.75, 5.0x3.2x0.75, 7.0x5.0x0.9
Status Production
  • Industrial sensors
  • Motor servo
  • Industrial control systems
  • High temp networking gears
  • Medical video CAM
  • Asset tracking system

Features Benefits
  • Unique combination of 
    •  High frequency (Up to 137 MHz)
    • ±20 PPM
    • automotive temp (-40 to 125 °C)
    • Samllest package (2.0 x 1.6 mmxmm)
  • Better timing margin ideal for space constrained, outdoor and high temp operating environment
  • 0.1 ppb/g low G-sensitivity
  • Improved system performance under vibration
  • Simpler carrrier drop-test compliance
  • 70 g shock and 50 kg vibration
  • Best system relability in harsh environment
  • Programmable drive strength
  • Slower rise/fall time that minimizes EMI from the oscillator
  • Lower cost by driving multiple loads and eliminate additional timing components
  • 5 industry standard package
  • 100% drop in repalcement of quartz XO
  • Ultra fast lead time (2 to 4 weeks)
  • Reduce inventory overhead
  • Mitigate shortage risks



Measured Performance Reports on SiT8919B

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



List of Supported Frequencies


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

Ordering Codes for Supported Tape & Reel Packing Method





1.8V LVCMOS IBIS icon SiT8919 1p8v
2.5V LVCMOS IBIS icon SiT8919 2p5v
2.8V LVCMOS IBIS icon SiT8919 2p8v
3.0V LVCMOS IBIS icon SiT8919 3p0v
3.3V LVCMOS IBIS icon SiT8919 3p3v
2.25V - 3.63V LVCMOS IBIS icon SiT8919 xx

Unique combination of
  • ±20 PPM frequency stability
  • over -40 to +125° C automotive temp range
  • in 2.0 x 1.6 mm package