Please refer to the English Version as our Official Version.

Europe: France~~(Français)~~ Germany~~(Deutsch)~~ Italy~~(Italia)~~ Russian~~(русский)~~ Poland~~(polski)~~ Czech~~(Čeština)~~ Luxembourg~~(Lëtzebuergesch)~~ Netherlands~~(Nederland)~~ Iceland~~(íslenska)~~ Hungarian~~(Magyarország)~~ Spain~~(español)~~ Portugal~~(Português)~~ Turkey~~(Türk dili)~~ Bulgaria~~(Български език)~~ Ukraine~~(Україна)~~ Greece~~(Ελλάδα)~~ Israel~~(עִבְרִית)~~ Sweden~~(Svenska)~~ Finland~~(Svenska)~~ Finland~~(Suomi)~~ Romania~~(românesc)~~ Moldova~~(românesc)~~ Slovakia~~(Slovenská)~~ Denmark~~(Dansk)~~ Slovenia~~(Slovenija)~~ Slovenia~~(Hrvatska)~~ Croatia~~(Hrvatska)~~ Serbia~~(Hrvatska)~~ Montenegro~~(Hrvatska)~~ Bosnia and Herzegovina~~(Hrvatska)~~ Lithuania~~(lietuvių)~~ Spain~~(Português)~~ Switzerland~~(Deutsch)~~ United Kingdom~~(English)~~

Asia/Pacific: Japan~~(日本語)~~ Korea~~(한국의)~~ Thailand~~(ภาษาไทย)~~ Malaysia~~(Melayu)~~ Singapore~~(Melayu)~~ Vietnam~~(Tiếng Việt)~~ Philippines~~(Pilipino)~~

Africa, India and Middle East: United Arab Emirates~~(العربية)~~ Iran~~(فارسی)~~ Tajikistan~~(فارسی)~~ India~~(हिंदी)~~ Madagascar~~(malaɡasʲ)~~

South America / Oceania: New Zealand~~(Maori)~~ Brazil~~(Português)~~ Angola~~(Português)~~ Mozambique~~(Português)~~

North America: United States~~(English)~~ Canada~~(English)~~ Haiti~~(Ayiti)~~ Mexico~~(español)~~

Home Products Crystals, Oscillators, Resonators Oscillators~~SIT8208AI-21-18S-8.192000~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

SIT8208AI-21-18S-8.192000 - SiTime

Manufacturer Part Number: SIT8208AI-21-18S-8.192000

Manufacturer: SiTime

Allelco Part Number: 98D-SIT8208AI-21-18S-8.192000

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 37,746 pcs available, New & Original

Parts Description: MEMS OSC XO 8.1920MHZ LVCM LVTTL

Package: 4-SMD, No Lead

Data sheet: SIT8208AI-21-18.pdf

HTML Datasheet
SiT8208Ax Datasheet.pdf

Other Related Documents
Manufacturing Notes for SiTime Products.pdf

RoHs Status: ROHS3 Compliant

~~Compare~~

Our certification

In stock: 37746

Unit Price: $1.40
Subtotal: $0.00

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

Quantity	Unit Price	Ext. Price
1+	$1.40	$1.40

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SIT8208AI-21-18S-8.192000 Tech Specifications
SiTime - SIT8208AI-21-18S-8.192000 technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT8208AI-21-18S-8.192000

Product Attribute	Attribute Value
Manufacturer	SiTime
Voltage - Supply	1.8V
Type	XO (Standard)
Spread Spectrum Bandwidth	-
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)
Series	SiT8208
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	±20ppm
Frequency	8.192 MHz
Current - Supply (Max)	31mA
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)

What are the key advantages of using the SIT8208AI-21-18S-8.192000 MEMS oscillator over traditional quartz-based XOs in a 1.8V LVCMOS system?: The SIT8208AI-21-18S-8.192000 leverages MEMS technology, which provides superior resilience to mechanical shock and vibration compared to quartz resonators—critical in industrial or mobile applications. Its ±20ppm frequency stability over the full -40°C to 85°C range ensures reliable timing without requiring external compensation circuits. Additionally, the integrated standby mode reduces current to near-zero levels when disabled, making it suitable for power-sensitive designs where quartz alternatives often lack comparable shutdown efficiency.

How does the standby function in the SIT8208AI-21-18S-8.192000 impact system-level power management during low-duty-cycle operation?: When the standby pin is asserted, the SIT8208AI-21-18S-8.192000 disables internal circuitry and draws minimal leakage current, enabling dynamic power gating in battery-powered or energy-harvesting systems. This allows designers to synchronize oscillator activation with periodic sensor sampling or communication bursts, significantly extending operational life without requiring external clock gating logic.

Can the SIT8208AI-21-18S-8.192000 maintain its ±20ppm stability under rapid thermal transients, such as those encountered during reflow or environmental cycling?: Yes, the MEMS-based resonator in the SIT8208AI-21-18S-8.192000 exhibits minimal frequency hysteresis and fast thermal settling due to the absence of piezoelectric stress effects common in quartz. This results in more predictable behavior during temperature ramps, reducing the risk of timing errors during startup or environmental shifts that could affect phase-locked loops or communication interfaces.

What layout considerations are critical when placing the SIT8208AI-21-18S-8.192000 on a high-density PCB with mixed-signal components?: The 3.20mm x 2.50mm 4-SMD no-lead package requires careful pad design and solder stencil aperture control to prevent tombstoning. Keep the output trace short and impedance-controlled to avoid reflections, especially when driving LVTTL loads. Isolate the power supply with a local 100nF ceramic capacitor placed within 2mm of the VDD pin, and avoid routing high-speed digital lines beneath the device to minimize coupling noise into the sensitive MEMS core.

How does the output drive capability of the SIT8208AI-21-18S-8.192000 compare to other 1.8V LVCMOS oscillators when driving multiple loads or long traces?: The SIT8208AI-21-18S-8.192000 delivers a standard LVCMOS output capable of sourcing/sinking typical CMOS levels at 1.8V, but its maximum supply current is limited to 31mA. When driving fanout loads exceeding 10pF or trace lengths over 50mm, consider adding a buffer to maintain rise/fall times below 5ns and prevent degradation of clock integrity—especially in synchronous systems where setup/hold margins are tight.

Is the SIT8208AI-21-18S-8.192000 suitable for use in automotive applications requiring AEC-Q100 compliance?: While the SIT8208AI-21-18S-8.192000 operates reliably across -40°C to 85°C and meets RoHS3 standards, it is not rated for AEC-Q100 qualification. For automotive designs, verify whether the broader system can tolerate non-automotive-grade timing components or select a qualified alternative from SiTime’s automotive-specific portfolio.

What is the significance of the 8.192 MHz frequency in the SIT8208AI-21-18S-8.192000, and how does it align with common communication protocols?: The 8.192 MHz frequency is a standard multiple used in telecom and audio systems, particularly as a reference for T1/E1 line interfaces and voice-band codecs. The SIT8208AI-21-18S-8.192000 provides a stable, low-jitter clock that can be directly used or divided down to generate synchronous timing for PCM frames, reducing the need for fractional-N synthesizers and simplifying clock tree design.

How does the phase noise performance of the SIT8208AI-21-18S-8.192000 compare to similar-frequency quartz oscillators in the 10kHz to 1MHz offset range?: MEMS oscillators like the SIT8208AI-21-18S-8.192000 typically exhibit higher close-in phase noise than high-end quartz XOs due to lower Q-factor resonators. However, in many digital systems where cycle-to-cycle jitter matters more than spectral purity, the integrated jitter remains acceptable—typically under 1ps RMS when measured over 12kHz to 20MHz bandwidth—making it viable for UART, SPI, and low-speed Ethernet applications.

Can the SIT8208AI-21-18S-8.192000 be used in a design that requires spread spectrum clocking to reduce EMI?: No, the SIT8208AI-21-18S-8.192000 does not support spread spectrum modulation. Its fixed-frequency XO architecture outputs a pure 8.192 MHz signal. For EMI-sensitive applications requiring frequency dithering, consider SiTime’s SSXO variants or implement board-level filtering and shielding strategies instead.

What is the expected long-term aging behavior of the SIT8208AI-21-18S-8.192000, and how might it affect frequency accuracy over a 10-year product lifecycle?: SiTime specifies typical aging of less than ±3ppm over 10 years at 25°C for MEMS oscillators like the SIT8208AI-21-18S-8.192000, significantly better than many quartz counterparts under similar conditions. This stability reduces the need for periodic recalibration in field-deployed equipment, supporting consistent timing performance throughout the product’s operational life.

How should the SIT8208AI-21-18S-8.192000 be handled during assembly given its MSL 1 rating and no-lead package?: With an MSL 1 (unlimited floor life) rating, the SIT8208AI-21-18S-8.192000 can be stored and processed under normal ambient conditions without dry packing or bake-out requirements. However, the 0.80mm seated height and no-lead construction demand precision pick-and-place alignment and reflow profiling to avoid voiding or misalignment—especially important in high-volume manufacturing environments.

Does the SIT8208AI-21-18S-8.192000 require external load capacitors or termination resistors for proper operation?: No external load capacitors are needed; the SIT8208AI-21-18S-8.192000 includes all necessary internal compensation. For LVCMOS/LVTTL interfacing, series termination (typically 22–33Ω) may be used near the output pin if driving long traces or capacitive loads, but parallel termination is generally unnecessary unless interfacing with transmission lines exceeding λ/10 in length.

How does the startup time of the SIT8208AI-21-18S-8.192000 compare to quartz oscillators when power is applied or released from standby?: The SIT8208AI-21-18S-8.192000 achieves stable oscillation within microseconds after power-up or standby release—significantly faster than many quartz XOs, which may require milliseconds to settle. This rapid response benefits systems with aggressive power cycling or fast wake-up sequences, minimizing latency in time-critical applications.

What design risks should be evaluated when replacing a legacy quartz oscillator with the SIT8208AI-21-18S-8.192000 in an existing 1.8V timing circuit?: Primary considerations include verifying output voltage levels meet receiver thresholds under all load conditions, confirming standby control logic polarity matches system requirements, and ensuring the PCB footprint accommodates the 3.20mm x 2.50mm package. Additionally, assess whether the slightly higher phase noise profile affects sensitive analog or RF stages downstream—though for most digital systems, the trade-off favors improved robustness and power efficiency.

Is the SIT8208AI-21-18S-8.192000 compatible with 3.3V-tolerant inputs when operated at 1.8V supply?: Yes, the LVCMOS output of the SIT8208AI-21-18S-8.192000 swings rail-to-rail at 1.8V and is compatible with 3.3V-tolerant inputs that accept VIH(min) ≤ 1.3V. However, ensure the receiving device does not back-drive the oscillator’s output during power-down states unless the system includes isolation diodes or level-shifting circuitry.

How does the current consumption of the SIT8208AI-21-18S-8.192000 scale with frequency stability settings or temperature extremes?: The 31mA maximum supply current specification for the SIT8208AI-21-18S-8.192000 remains relatively flat across the -40°C to 85°C range due to internal regulation and MEMS drive optimization. Unlike some oscillators that increase bias current to maintain stability at temperature extremes, this device maintains consistent power draw, simplifying thermal and battery-life calculations.

Can multiple SIT8208AI-21-18S-8.192000 units be synchronized or phase-locked in a multi-clock system?: The SIT8208AI-21-18S-8.192000 is a free-running XO without synchronization inputs. While multiple units will operate at nominally the same frequency, slight variations due to initial tolerance and aging prevent precise phase alignment. For coherent clocking, use a single master oscillator with distribution buffers or select a PLL-based timing solution instead.

What failure modes should be anticipated if the SIT8208AI-21-18S-8.192000 is subjected to sustained operation beyond its rated temperature range?: Operating the SIT8208AI-21-18S-8.192000 above 85°C may accelerate long-term aging and shift frequency stability beyond ±20ppm, potentially violating timing budgets in communication protocols. Prolonged exposure below -40°C could temporarily affect startup reliability, though the MEMS structure itself remains mechanically intact. Always maintain operation within the specified range to ensure datasheet performance and longevity.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT8208AI-21-18S-8.192000

Product Attribute
Part Number	SIT8208AI-21-18S-8.192000Y	SIT8208AI-21-18S-8.192000X	SIT8208AI-21-18S-8.192000T	SIT8208AI-21-18S-74.250000Y
Manufacturer	SiTime	SiTime	SiTime	SiTime
Spread Spectrum Bandwidth	-	-	-	-
Ratings	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Output	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Height - Seated (Max)	-	-	-	-
Type	-	-	-	-
Base Resonator	-	-	-	-
Function	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Series	-	-	-	-
Voltage - Supply	-	-	-	-
Frequency	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Size / Dimension	-	-	-	-
Current - Supply (Max)	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Frequency Stability	-	-	-	-

SIT8208AI-21-18S-8.192000 Datasheet PDF

Download SIT8208AI-21-18S-8.192000 pdf datasheets and SiTime documentation for SIT8208AI-21-18S-8.192000 - SiTime.

HTML Datasheet: SiT8208Ax Datasheet.pdf
Other Related Documents: Manufacturing Notes for SiTime Products.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

ECUb***h

Sep 22, 2026

Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.
RS48***ieldTech

Sep 16, 2026

Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.
Logi***b_Chris

Sep 8, 2026

Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.
Circ***FixerTom

Sep 2, 2026

Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.
Retr***UWorks

Aug 31, 2026

Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.
Andr***PCBLab

Aug 28, 2026

I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.
Leat***O'Keefe

Aug 20, 2026

one of my hobbies is skydiving. and when i'm skydiving this works great.
Ilen***

Aug 20, 2026

This product works considerably well. It secretly improves my basketball by a lot.
Indu***ialPower

Aug 17, 2026

Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
Nikh***ech

Aug 13, 2026

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Write a Review

Your Email address will not be published.

Shipment

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.

Delivery Cost

Use your express account for shipment if you have one.
Use our account for the shipment. Refer to the table below for the approximate charges.

(Different time frame / countries / package size has different price.)

Delivery Method

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
Others more shipping ways, please get in touch with your customer manager.

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.
Contact us if you have any questions.

QC (Quality Warranty)
Payment Support
Packaging
Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.

Strict quality inspection builds a solid foundation for electronic component quality.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner

Efficient Supply Management
Cost-Saving Procurement
Fast Sourcing & Delivery

Contact us if you have any questions.

Phone: +00852 9146 4856
Email: info@allelco.com

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

SMTA
IPC
ESD
PSMA