Ultra-low Jitter Differential XO for Standard Networking Frequencies


The SiT9375 is optimized for communications applications requiring low jitter and low power, and is available in the industry’s smallest differential package.

This differential oscillator supports 31 standard frequencies from 25 MHz to 644.53125 MHz, commonly used in networking and other communications applications. This device features 150 fs RMS jitter (typ.), excellent immunity to power supply noise and environmental hazards, industry-standard package sizes down to 2.0 x 1.6 mm, low-power options, and wide temperature support up to 105°C.

The SiT9375 offers popular output drivers for LVPECL, LVDS, HCSL and low-power HCSL with integrated termination resistors. It also features a unique FlexSwing™ driver that performs like LVPECL but with independent control of VOH and VOL levels to simplify interfacing with chipsets having non-standard input-voltage requirements. The SiT9375 accepts power-supply voltages down to 1.8V for additional power savings.

View related products: 150 fs jitter | XO lineup
Related blog: Jitter 101. What you need to know.

6-pin 2.0x1.6 Atna Oscillator
"Specs" "Value"
Frequency 31 standard frequencies
Frequency Stability (ppm) ±20, ±25, ±30, ±50
Operating Temperature Range (°C) -20 to +70, -40 to +85, -40 to +95, -40 to +105
Package Type (mm²) 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5
Oscillator Type XO-DE
Phase Jitter (rms) 200 fs
Voltage Supply (V) 1.8, 2.5, 3.3, 1.71 to 3.63, 2.25 to 3.63
Features Ultra-low jitter, small size
Availability Production

Exceptional dynamic performance in real-life operating conditions

  • 150 fs RMS phase jitter (typ.)
  • ±20 ppm stability
  • Excellent system performance under environmental stress

20x better vibration sensitivity

  • Minimizes packet loss in high-vibration environments

0.01 ps/mV power supply induced jitter sensitivity

  • Simplify power supply design

2.0 x 1.6 mm package

  • Enables small form-factor system with stringent jitter requirement

Flexible programmable features

  • 31 common frequencies
  • 1.8 to 3.63 V
  • LVPECL, LVDS, HCSL, Low-power HCSL, FlexSwing: Flexible and low power, output drivers and terminations

Superior reliability

  • 1 billion hours MTBF
  • Lifetime warranty
  • Reduces field failures due to clock components and associated repair costs
  • Optical Modules
  • Networking Switches & Gateways
  • FPGA
  • System Clocking
  • Data Centers
  • Industrial Applications
  • Ethernet Switches & Routers
  • Storage, Servers & Datacenters
  • AI / Graphics Cards
  • 100G / 200G / 400G / 800G Ethernet


SiT6760EB Eval Board User Manual – Evaluate oscillator performance

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

Jitter Calculator and Plots – Convert phase noise to phase jitter, find phase noise plots

3225 6-Pins | 5032 6-Pins with CP | 7050 6-Pins with CP – Preview packages with QFN 3D step models

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