Specs Value
Device Type Super-TCXOs
12.8 MHz
Frequency Stability (ppm)
Operating Temp. Range (°C)
-40 to 85
Supply Voltage (V)
Package Size (mm x mm)
Output Drive Strength*
Clipped Sinewave
Feature Pin
Pull Range (PPM PR)

*See datasheet for details

Exceptional dynamic stability under airflow, fast temp. ramp

  • ±10 ppb over-temp. stability from -40 to 105°C 
  • ±0.5 ppb/°C frequency slope (ΔF/ΔT), 10°C/min ramp
    • Ensures system-level quality of service for telecom and networking equipment in hostile environments
  • ±0.5 ppb/day aging
  • 2e-11 ADEV at 10 second averaging time

4x lower power and 2x smaller for compact edge devices

  • 110 mW typical power consumption (2.5V)
  • Robust 7.0 mm x 5.0 mm package

20x better phase noise under vibration

  • Minimizes call and/or link drops in high-vibration environments

No activity dips or microjumps

  • Eliminates any need for costly screening or burn-in tests

0.2 ps/mV power supply noise rejection (PSNR)

  • Reduces BOM by eliminating a dedicated LDO for TCXO

LVCMOS or clipped sinewave output

  • Optimizes for best balance between EMI and jitter

Rich programmable features

  • Any frequency between 1 to 60 MHz
  • 2.25 to 3.63 V
  • Large pull range from ±6.25 to ±3200 ppm
    • Customize TCXO specifications for optimal system performance

Digital frequency tuning through I2C

  • Eliminate frequency shift caused by board noise

Superior reliability reduces field failures and repair costs due to clock components

  • 1 billion hours MTBF
  • Lifetime warranty
  • SONET/SDH Stratum 3E
  • Small Cells
  • IEEE 1588 Boundary Clocks & Grandmasters
  • Synchronous Ethernet (G.8262, options 1 and 2)
  • Core & Edge Routers
  • Carrier Class Switches
  • Wireless & Backhaul
  • Optical Transport (OTN, OLT, etc.)
  • Cable Model Termination System (CMTS)
  • Precision GNSS
  • Broadband Satellite
  • Instrumentation
  • GPS / GNSS Modules
  • Smart Meters
  • Asset Tracking
  • Long-range Communications
  • Smart Agriculture
  • Smart City
  • Indoor Positioning
  • Defense & Aerospace

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

Time Error Simulation Software – Simulate and analyze the impact of the local oscillator

TimeMaster Configuration Software – Configure and evaluate oscillators via I2C/SP

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

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  • SIT5501AICWU-33E0-12.800000Y
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