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Precision Timing with Shock-Resistant MEMS Oscillator

SiTime Cascade SiT9514x


SiTime Cascade SiT9514x

An industry first, the SiTime Cascade SiT9514x is a clock-system-on-chip with an integrated MEMS oscillator. SiT9514x solutions redefine clock system technology with ultra-low jitter performance and exceptional flexibility. Combining clocking solutions into one compact, power-efficient chip, it’s ideally suited for advanced applications like communications, cloud computing, or industrial systems.


The Cascade SiT9514x streamlines PCB design and addresses the reliability challenges often seen with traditional quartz technology. Its MEMS-based design delivers superior durability, resisting shock and vibration while eliminating activity dips.  With 4 inputs, 11 outputs, and extensive programmable capabilities, the Cascade SiT9514x family empowers designers to construct a complete clock tree with a single, integrated chip.

Key Features Include:

  • Excellent phase jitter performance in harsh conditions

  • Flexible frequency planning with up to 4 Frac-N PLLs

    o   4 inputs, 11 outputs

    o   8 kHz to 2.1 GHz differential and 8 kHz to 250 MHz LVCMOS outputs

    o   1 PPS output

  • Continuous and simultaneous monitoring of all inputs

  • Industry-leading hitless switching

    o   26 ps phase build-out mode

    o   Lock loss, clock loss, and frequency drift monitors

  • Synchronized, holdover, or free-run modes of operation

  • Fast switching with zero delay

  • Individually configurable outputs

    o   LVPECL, CML, HCSL, LVDS, or LVCMOS

    o   1.8 V, 2.5 V, or 3.3 V

  • 125 fs typical RMS phase jitter at 156.25 MHz

  • Programmable output delay

  • Low loop bandwidth (1 MHz) for optimal wander

  • DCO mode (I2C, SPI) with 0.005 ppb frequency resolution


Applications Include:

  • Sync-E, ITU-T G.8262

  • Boundary clock, ITU G.8273.2

  • Slave clocks, ITU G.812, G.813

  • IEEE 1588

  • 802.3AS AVB, TSN

  • Broadcast video

  • 5G RRU and small cells

  • 10/100/200/400G Ethernet

  • OTN clocking for framers, mappers, and processors

  • FPGA and server clocking

  • Test and measurement


Technical Resources:


Braemac is an authorized distributor for SiTime. 

Contact us at info@Braemac.com for more information.

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