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HomeProductsCrystals, Oscillators, ResonatorsOscillatorsSIT8209AI-81-28S-166.000000Y
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SIT8209AI-81-28S-166.000000Y - SiTime

Manufacturer Part Number
SIT8209AI-81-28S-166.000000Y
Manufacturer
SiTime
Allelco Part Number
98D-SIT8209AI-81-28S-166.000000Y
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
43,117 pcs available, New & Original
Parts Description
-40 TO 85C, 7050, 20PPM, 2.8V, 1
Package
4-SMD, No Lead
Data sheet
SIT8209AI-81-28.pdf

Datasheets

SiT8209.pdf
RoHs Status
Lead free / RoHS Compliant
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Our certification
In stock: 43117
  • Unit Price: $3.291
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $3.291 $3.29
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SIT8209AI-81-28S-166.000000Y Tech Specifications
SiTime - SIT8209AI-81-28S-166.000000Y technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT8209AI-81-28S-166.000000Y

Product Attribute Attribute Value
Manufacturer SiTime
Voltage - Supply 2.8V
Type XO (Standard)
Size / Dimension 0.276" L x 0.197" W (7.00mm x 5.00mm)
Series SiT8209
Ratings -
Packaging Tape & Reel (TR)
Package / Case 4-SMD, No Lead
Output LVCMOS, LVTTL
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Product Attribute Attribute Value
Manufacturer Standard Lead Time 5 Weeks
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Height - Seated (Max) 0.039" (1.00mm)
Function Standby (Power Down)
Frequency Stability ±20ppm
Frequency 166MHz
Detailed Description 166MHz XO (Standard) LVCMOS, LVTTL Oscillator 2.8V Standby (Power Down) 4-SMD, No Lead
Current - Supply (Max) 36mA
Current - Supply (Disable) (Max) 70µA
Base Resonator MEMS
Absolute Pull Range (APR) -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status Lead free / RoHS Compliant

Frequently Asked Questions(FAQ)

How does the SIT8209AI-81-28S-166.000000Y perform in high-temperature industrial environments, and what are its thermal limitations for reliable operation?
The SIT8209AI-81-28S-166.000000Y is rated for operation across a temperature range of -40°C to +85°C, making it suitable for most industrial applications without derating. At sustained ambient temperatures approaching 85°C, internal self-heating from the 36mA supply current can raise junction temperatures above this threshold if thermal management is inadequate. Engineers should ensure adequate PCB copper pour or airflow near the oscillator footprint to maintain die temperature within specification. Failure to do so may lead to frequency drift beyond the ±20ppm stability rating or accelerated aging effects.
What trade-offs exist between frequency accuracy and power consumption when using the SIT8209AI-81-28S-166.000000Y in battery-powered embedded systems?
With a fixed supply voltage of 2.8V and quiescent current draw of approximately 36mA at full load, the SIT8209AI-81-28S-166.000000Y consumes more power than many low-power crystal oscillators. While the ±20ppm stability ensures reliable timing without calibration overhead, this level of precision typically requires higher bias currents that contribute directly to total system power budget. In energy-constrained designs, alternative SiTime MEMS devices with lower drive levels may be preferable unless the 166MHz output and LVCMOS/LVTTL compatibility are non-negotiable.
How does the SIT8209AI-81-28S-166.000000Y compare to traditional quartz-based oscillators in terms of shock and vibration immunity?
As a MEMS-based device, the SIT8209AI-81-28S-166.000000Y inherently exhibits superior resistance to mechanical shock and vibration compared to crystalline resonators. This advantage stems from its lack of fragile quartz material and physical prong structures. Field data shows MEMS oscillators like this one maintain frequency stability under conditions where equivalent crystal units would experience microphonics-induced jitter or failure. However, designers must still verify that PCB mounting stresses during assembly do not compromise solder joint integrity over time.
Can the SIT8209AI-81-28S-166.000000Y operate reliably in automotive-grade applications requiring AEC-Q200 qualification?
The SIT8209AI-81-28S-166.000000Y is specified only to commercial temperature grades (-40°C to +85°C), which falls short of typical automotive requirements (often -40°C to +125°C). While SiTime offers other members of the SIT8209 series with extended temperature ranges and AEC-Q200 compliance, this particular variant is not qualified for harsh automotive environments. Using it in such systems risks premature degradation or functional failure due to elevated thermal stress beyond design limits.
What impact does supply voltage ripple have on the frequency stability of the SIT8209AI-81-28S-166.000000Y?
Operating at a nominal 2.8V with tight ±20ppm stability demands a clean power rail. Supply noise exceeding 100mVpp can modulate the oscillation amplitude and introduce phase noise that effectively degrades effective frequency accuracy. For critical timing applications, engineers should implement local decoupling—using a combination of 10µF bulk and 0.1µF ceramic capacitors placed within 2mm of the VDD pin—to suppress high-frequency transients that could perturb the MEMS resonator’s resonant mode.
Is it possible to adjust the output frequency of the SIT8209AI-81-28S-166.000000Y after deployment, and how does this affect long-term reliability?
The SIT8209AI-81-28S-166.000000Y is factory-programmed to 166.000000MHz and cannot be reconfigured in the field without specialized equipment. Any attempt to alter programming parameters post-manufacturing voids warranty and risks damaging the non-volatile memory cells. Since frequency adjustment isn’t supported, system-level tuning must occur through software PLL settings or external clock dividers rather than oscillator modification.
How does the SIT8209AI-81-28S-166.000000Y compare to similar-speed CMOS oscillators in terms of startup time and transient response?
Unlike some legacy CMOS oscillators that exhibit slow ramp-up due to weak drive circuits, the SIT8209AI-81-28S-166.000000Y leverages optimized MEMS biasing to achieve stable oscillation within milliseconds of power application. Its fast startup reduces initialization latency in multi-clock domain systems. However, unlike digitally controlled oscillators (DCOs) capable of dynamic tuning, this device lacks real-time adjustability, so any frequency correction must be pre-programmed at design time.
What considerations apply when routing signals adjacent to the SIT8209AI-81-28S-166.000000Y on a high-speed PCB?
Due to its high operating frequency (166MHz), the SIT8209AI-81-28S-166.000000Y generates significant electromagnetic emissions. To minimize crosstalk and radiated interference, keep signal traces orthogonal to the oscillator pins and avoid routing sensitive analog or clock lines parallel to its output. Ground planes should be solid beneath the package, and guard traces connected to ground via multiple vias help isolate switching noise. Poor layout can degrade phase noise performance and violate EMI standards even if the oscillator itself meets datasheet specs.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT8209AI-81-28S-166.000000Y

Product Attribute SIT8209AI-81-28S-166.600000Y SIT8209AI-81-28S-166.000000T SIT8209AI-81-28S-166.000000 SIT8209AI-81-28S-166.000000X
Part Number SIT8209AI-81-28S-166.600000Y SIT8209AI-81-28S-166.000000T SIT8209AI-81-28S-166.000000 SIT8209AI-81-28S-166.000000X
Manufacturer SiTime SiTime SiTime SiTime
Ratings - - - -
Frequency - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Lead Free Status / RoHS Status - - - -
Current - Supply (Disable) (Max) - - - -
Packaging - - - -
Function - - - -
Frequency Stability - - - -
Absolute Pull Range (APR) - - - -
Type - - - -
Manufacturer Standard Lead Time - - - -
Detailed Description - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Height - Seated (Max) - - - -
Series - - - -
Size / Dimension - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Base Resonator - - - -
Current - Supply (Max) - - - -
Moisture Sensitivity Level (MSL) - - - -
Output - - - -
Voltage - Supply - - - -

SIT8209AI-81-28S-166.000000Y Datasheet PDF

Download SIT8209AI-81-28S-166.000000Y pdf datasheets and SiTime documentation for SIT8209AI-81-28S-166.000000Y - SiTime.

Datasheets
SiT8209.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

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Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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SiTime

SIT8209AI-81-28S-166.000000Y

SiTime
98D-SIT8209AI-81-28S-166.000000Y

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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