SiT8945

115 to 137 MHz, Extended Temperature (-55 °C to 125 °C) Oscillator

The Endura™ SiT8945 is the most reliable and the highest quality oscillator for high-reliability aerospace and defense applications. This device delivers the perfect combination of high frequency range (up to 137 MHz), excellent stability (±20 ppm), and wide temperature range (-55 to 125°C) in the smallest 2.0 x 1.6 mm package that is not readily available from quartz suppliers. Engineered for harsh environments, this oscillator features ultra-low 0.1 ppb/g acceleration sensitivity, 10,000g shock, and 70g vibration resistance. 

The MEMS-based Endura Si8945 conforms to MIL-PRF-55310, MIL-STD-883, and AEC-Q100 specifications.

Looking for other Endura single-ended oscillators? 1 to 110 MHz | SOT23-5

Five industry standard footprints as small as 2016 for all frequencies, voltages, and stabilities
Oscillator Type XO-SE
Frequency 115 to 137 MHz
Frequency Stability (ppm) ±20, ±25, ±30, ±50
Operating Temperature Range (°C) -40 to +105, -40 to +125, -55 to +125
Output type LVCMOS
Package Type (mm²) 2.0x1.6, 2.5x2.0, 3.2x2.5, 5.0x3.2, 7.0x5.0
Phase Jitter (RMS) 1.3 ps
Features Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883, AEC-Q100
Voltage Supply (V) 1.8, 2.5 to 3.3
FlexEdgeTM Rise/Fall Time Yes
Availability Sampling

Unique combination of

  • up to 137 MHz
  • ±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
  • All ruggedized applications