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Home Products Crystals, Oscillators, Resonators Oscillators~~SIT8209AI-22-28S-133.333000~~

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SIT8209AI-22-28S-133.333000 - SiTime

Name: SiTime SIT8209AI-22-28S-133.333000
Brand: SiTime
SKU: SIT8209AI-22-28S-133.333000
Price: 1.364 USD
Availability: InStock
Rating: 5 (3 reviews)

Manufacturer Part Number: SIT8209AI-22-28S-133.333000

Manufacturer: SiTime

Allelco Part Number: 98D-SIT8209AI-22-28S-133.333000

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 30,450 pcs available, New & Original

Parts Description: MEMS OSC XO 133.3330MHZ LVCMOS

Package: 4-SMD, No Lead

Data sheet: SIT8209AI-22-28.pdf

Other Related Documents
Manufacturing Notes for SiTime Products.pdf

HTML Datasheet
SiT8209.pdf

RoHs Status: ROHS3 Compliant

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In stock: 30450

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Specifications

SIT8209AI-22-28S-133.333000 Tech Specifications
SiTime - SIT8209AI-22-28S-133.333000 technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT8209AI-22-28S-133.333000

Product Attribute	Attribute Value
Manufacturer	SiTime
Voltage - Supply	2.8V
Type	XO (Standard)
Spread Spectrum Bandwidth	-
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)
Series	SiT8209
Ratings	-
Package / Case	4-SMD, No Lead
Package	Strip
Output	LVCMOS, LVTTL

Product Attribute	Attribute Value
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Height - Seated (Max)	0.031" (0.80mm)
Function	Standby (Power Down)
Frequency Stability	±25ppm
Frequency	133.333 MHz
Current - Supply (Max)	36mA
Base Resonator	MEMS
Absolute Pull Range (APR)	-

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

How does the SIT8209AI-22-28S-133.333000 compare to quartz-based XOs in terms of shock and vibration resilience during high-G industrial applications?: The SIT8209AI-22-28S-133.333000 leverages MEMS-based resonance, which eliminates the mechanical fragility of quartz crystals. In environments with sustained vibration or mechanical shock—such as motor control systems or automotive under-hood deployments—the MEMS architecture maintains ±25ppm frequency stability where traditional quartz oscillators may exhibit microphonic shifts or outright failure. This makes the SIT8209AI-22-28S-133.333000 a more reliable choice in mechanically dynamic conditions.

What is the real-world power consumption implication of the 36mA max supply current for the SIT8209AI-22-28S-133.333000 in battery-powered edge devices?: At 2.8V and 36mA peak, the SIT8209AI-22-28S-133.333000 draws approximately 100.8mW during active operation. While this is higher than ultra-low-power TCXOs, the standby (power-down) function allows system-level power gating, reducing average current to near-zero during sleep cycles. For duty-cycled applications like wireless sensor nodes, this enables a favorable balance between timing performance and energy efficiency when compared to always-on alternatives.

Can the SIT8209AI-22-28S-133.333000 maintain its ±25ppm stability across the full -40°C to 85°C range without additional compensation circuitry?: Yes. The SIT8209AI-22-28S-133.333000 is specified to deliver ±25ppm frequency stability across the entire operating temperature range without requiring external temperature compensation. This inherent stability stems from SiTime’s compensated MEMS design, which reduces the need for additional analog compensation networks—simplifying PCB layout and lowering BOM complexity in thermally variable environments.

How does the SIT8209AI-22-28S-133.333000 perform in systems requiring tight synchronization with Ethernet or PCIe reference clocks?: With a 133.333 MHz output and ±25ppm stability, the SIT8209AI-22-28S-133.333000 aligns well with common Ethernet (e.g., 10GBase-KR) and PCIe Gen3/Gen4 reference clock requirements. Its low jitter characteristics (typically under 1ps RMS phase jitter) and fast startup time support deterministic timing margins. However, for applications requiring sub-10ppm stability or spread spectrum modulation, alternative models in the SiT8209 series with tighter tolerances may be more appropriate.

Is the SIT8209AI-22-28S-133.333000 suitable for replacing a legacy quartz oscillator in an existing 4-SMD footprint without PCB redesign?: The SIT8209AI-22-28S-133.333000 uses a 3.20mm x 2.50mm 4-SMD, no-lead package with a 0.80mm max seated height, matching common industry footprints. Its LVCMOS/LVTTL-compatible output and 2.8V supply voltage allow direct drop-in replacement in many legacy designs, provided the load capacitance and drive strength are verified. The absence of internal pull capacitors may require minor tuning of termination networks in high-fanout clock trees.

What are the long-term reliability advantages of using the SIT8209AI-22-28S-133.333000 in high-reliability automotive or industrial systems?: The MEMS-based construction of the SIT8209AI-22-28S-133.333000 eliminates aging mechanisms associated with quartz, such as crystal contamination and electrode migration. It is rated for MSL 1 (unlimited floor life) and operates reliably across -40°C to 85°C without degradation in frequency stability. This results in lower field failure rates and improved MTBF in mission-critical systems like ADAS modules or factory automation controllers.

How does the standby (power-down) function on the SIT8209AI-22-28S-133.333000 affect wake-up time and clock signal integrity?: When the standby pin is asserted, the SIT8209AI-22-28S-133.333000 disables the output and reduces supply current to leakage levels. Upon re-enabling, the oscillator restarts within microseconds—significantly faster than quartz-based XOs, which may require milliseconds to stabilize. This rapid recovery supports low-latency power state transitions in mobile and IoT platforms without introducing clock glitches or phase discontinuities.

Can the SIT8209AI-22-28S-133.333000 be used in multi-clock systems where phase alignment between oscillators is critical?: While the SIT8209AI-22-28S-133.333000 does not include a phase synchronization feature, its deterministic startup behavior and low cycle-to-cycle jitter enable predictable phase relationships when multiple units are powered simultaneously. For tighter phase coherence, consider using a clock fanout buffer driven by a single SIT8209AI-22-28S-133.333000 master, which avoids inter-oscillator skew and simplifies timing closure in FPGA or SoC-based designs.

What design considerations are necessary when routing the output of the SIT8209AI-22-28S-133.333000 to high-speed SerDes or DDR interfaces?: The LVCMOS output of the SIT8209AI-22-28S-133.333000 can drive moderate capacitive loads (typically up to 15pF), but long traces or multiple receiver inputs may require series termination resistors (22–33Ω) to minimize reflections. Controlled impedance routing (50Ω single-ended) and ground plane continuity beneath the signal path are recommended to preserve signal integrity, especially when interfacing with GHz-range transceivers sensitive to clock quality.

How does the SIT8209AI-22-28S-133.333000 compare to other SiTime XO models in the same series for cost-sensitive consumer electronics?: The SIT8209AI-22-28S-133.333000 offers a balanced trade-off between performance and cost within the SiT8209 family. It provides tighter stability (±25ppm) than standard commercial-grade XOs while avoiding the premium pricing of ultra-stable or programmable variants. For consumer devices requiring reliable timing without over-specification—such as set-top boxes or smart displays—it delivers better long-term reliability than quartz at a competitive price point.

Are there known compatibility issues when using the SIT8209AI-22-28S-133.333000 with 3.3V logic families despite its 2.8V supply?: The SIT8209AI-22-28S-133.333000 outputs LVCMOS levels compatible with both 2.8V and 3.3V inputs, as its high-level output voltage (VOH) exceeds 0.8 × VDD and low-level (VOL) remains below 0.2 × VDD. No level shifting is required when interfacing with 3.3V CMOS inputs, provided the receiving device accepts 2.8V logic thresholds—a common feature in modern FPGAs and microcontrollers.

What EMI mitigation strategies are effective when deploying the SIT8209AI-22-28S-133.333000 in densely populated PCBs?: The SIT8209AI-22-28S-133.333000’s low-swing LVCMOS output and absence of harmonic-rich crystal resonances reduce EMI emissions compared to quartz oscillators. To further minimize radiated noise, place the device close to the clock sink, use a local ground pour under the package, and avoid routing high-speed signals parallel to the clock trace. Ferrite beads on the power supply line can suppress high-frequency conducted emissions in noise-sensitive analog sections.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT8209AI-22-28S-133.333000

Product Attribute
Part Number	SIT8209AI-22-28S-133.333000T	SIT8209AI-22-28S-133.333000Y	SIT8209AI-22-28S-133.333000X	SIT8209AI-22-28S-133.333300
Manufacturer	SiTime	SiTime	SiTime	SiTime
Size / Dimension	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Output	-	-	-	-
Height - Seated (Max)	-	-	-	-
Frequency Stability	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Ratings	-	-	-	-
Frequency	-	-	-	-
Spread Spectrum Bandwidth	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Base Resonator	-	-	-	-
Type	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Function	-	-	-	-
Current - Supply (Max)	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Voltage - Supply	-	-	-	-
Series	-	-	-	-

SIT8209AI-22-28S-133.333000 Datasheet PDF

Download SIT8209AI-22-28S-133.333000 pdf datasheets and SiTime documentation for SIT8209AI-22-28S-133.333000 - SiTime.

Other Related Documents: Manufacturing Notes for SiTime Products.pdf
HTML Datasheet: SiT8209.pdf

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Customer Reviews

Evaluation: 10 Articles

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.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.
Daic***K.

Mar 23, 2026

Very good. No issue after long time testing.

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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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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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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