Specs Value
Device Type LVCMOS Ruggedized Oscillators
50 MHz
Frequency Stability (ppm)
Operating Temp. Range (°C)
-40 to 85
Supply Voltage (V)
Package Size (mm x mm)
Output Drive Strength*
Feature Pin
Special Features
Low Sensitivity, 0.1 ppb/g

*See datasheet for details

Buy Now

This product ships directly from our factory, please allow 4-6 weeks for delivery.
Unit Pricing
Unit Count Unit Cost
1 - 9 $11.80
10 - 49 $8.26
>49 Contact Us
Available for sale in cut tape packaging. Some orders with quantities less than 50 pieces may be shipped in ESD zip bags. To order quantities greater than 50, please contact SiTime Sales or use the Chat below.
Also purchase from

Unique combination of

  • ±20 ppm frequency stability
  • over -55 to +125°C temp
  • in 2.0 x 1.6 mm package:
    • Best-in-class stability over extreme temperature range, ideal for high-rel applications

Low 0.1 ppb/g low g-sensitivity

  • No degradation of performance in harsh environments

70g vibration and 10,000g shock

  • Virtually indestructible

Configurable drive strength and rise/fall time

  • Optimize EMI to reduce interference to other subsystems

5 industry-standard packages

  • 100% drop-in replacement of quartz XO

Ultra-fast lead time (4 to 6 weeks)

  • Reduce inventory overhead
  • Mitigate shortage risks
  • Airborne communications
  • Field communications
  • Vehicle comms/telemetry
  • Avionics
  • Ruggedized applications

Narrow By:

Document Name Type
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Products Other Quality Documents
SiTime Conflict Minerals Policy Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents

Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature

Reliability Calculator – Get FIT/MTBF data for various operating conditions

2016 4-Pins | 2520 4-Pins | 3225 4-Pins | 5032 4-Pins – Preview packages with QFN 3D step models


Narrow By:

Resource Name Type
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
AN10028 Probing Oscillator Output Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
SC-AN10033 振荡器频率测量指南 Application Notes
MEMS Timing for High Reliability Applications Product Briefs
QFN 2016 4-Pins 3D Step Models
QFN 2520 4-Pins 3D Step Models
QFN 3225 4-Pins 3D Step Models
QFN 5032 4-Pins 3D Step Models
SiT8944 Datasheet Datasheets
Timing Solutions for Aerospace & Defense Brochures/Fliers
Building Robust Aerospace and Defense Products with Ruggedized Endura MEMS Oscillators White Papers
Smart Guided Munition Application Briefs
Land Defense Vehicle Communications Application Briefs
Unmanned Aerial Vehicles Application Briefs
SiTime MEMS First 工艺 Technology Papers
SiTime MEMS First 工艺 Application Notes
AN10073 How to Setup a Real-time Oscilloscope to Measure Jitter Application Notes
AN10071 Computing TIE Crest Factors for Telecom Applications Application Notes
AN10070 Computing TIE Crest Factors for Non-telecom Applications Application Notes
AN10072 Determine the Dominant Source of Phase Noise, by Inspection Application Notes
AN10074 Removing Oscilloscope Noise from RMS Jitter Measurements Application Notes
Military UAVs and Drones Application Briefs
VTOL and Commercial UAV Application Brief Application Briefs
Downhole Instrumentation Application Briefs
AN23033 Thermal Considerations for SiTime Products Application Notes
  • SiT8944BI-13-33EA50.000000Y
  • SiT8944BI-13-33EA50.000000T
  • SiT8944BI-13-33EA50.000000D
  • SiT8944BI-13-33EA50.000000E
  • SiT8944BI-13-33EA50.000000X
  • SiT8944BI-13-33EA50.000000N
  • SiT8944BI-13-33EA50.000000F
  • SiT8944BI-13-33EA50.000000G
  • SiT8944BI-13-33EA50.000000S