Si545 Single Ultra-Low Jitter Crystal Oscillator (XO)

The Si545 is a Single frequency ultra-low jitter crystal oscillator (XO) with a typical phase jitter of 0.08 ps that supports frequencies between 0.2 and 1500 MHz.


VDD (V)1.8 - 3.3
Jitter Recommended Range (fs)<
Phase Jitter (ps RMS)0.08
Temperature Range Min (°C)-40
Stability (+/- ppm)20; 25; 50
Package TypeMulti; Multi
Oscillator TypeXO
Frequency Max1500
Package Size (mm)2.5x3.2; 3.2x5; 5x7
DescriptionSingle Freq Ultra Low Jitter XO
OE (active high)Pin 1 or Pin 2
Number of FrequenciesSingle
Frequency Min0.2
Temperature Range Max (°C)85
Frequency Range (MHz)0.2 to 1500
Temperature Range (°C)-40 to 85

Product Documents

Quality and Packaging

Look up product's green / pb-free status and information on RoHS, REACH, Halogen Free, and PFIS.

Certificate of Performance

Evaluation Kits

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Universal Oscillator Evaluation Kit

The Si5xxUC-EVB lets customers evaluate any of our XO or VCXO with one board. This board can test I2C devices as well as Single, Dual, Quad fixed frequency parts. It also has three different footprints to enable testing of all three package sizes that are available with our portfolio (5x7 mm, 3.2x5 mm, and 2.5x3.2 mm).

The Si5xxUC-EVB does not come with a pre-installed sample device. You can specify a custom crystal oscillator and create a new part number, or look up an existing product by part number, and order samples starting at

MSRP $95.00

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ClockBuilder Pro Field Programmer

When used with ClockBuilder Pro software, the ClockBuilder Pro Field Programmer makes it simple for systems designers to develop, program, and debug any Si5332/8, Si5350/1/6/7, Si534x/6x/8x/9x, Si540x, and Si55xx part families clock device “in-system,” or in one of the convenient QFN sockets. The field programmer supports I2C or SPI interfaces to the host system, and SPI to the field programmer's QFN socket boards.

MSRP $149.00