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HomeProductsCrystals, Oscillators, ResonatorsOscillatorsSIT3372AC-4E3-28NC14.400000
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SIT3372AC-4E3-28NC14.400000 - SiTime

Manufacturer Part Number
SIT3372AC-4E3-28NC14.400000
Manufacturer
SiTime
Allelco Part Number
98D-SIT3372AC-4E3-28NC14.400000
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
38,715 pcs available, New & Original
Parts Description
MEMS OSC VCXO 14.4000MHZ HCSL
Package
6-SMD, No Lead Exposed Pad
Data sheet
SIT3372AC-4E3-2.pdf

HTML Datasheet

SiT3372 Datasheet.pdf

PCN Design/Specification

Mult Dev Material Chgs 26/Aug/2021.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 38715
  • Unit Price: $7.737
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $7.737 $7.74
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SIT3372AC-4E3-28NC14.400000 Tech Specifications
SiTime - SIT3372AC-4E3-28NC14.400000 technical specifications, attributes, parameters and parts with similar specifications to SiTime - SIT3372AC-4E3-28NC14.400000

Product Attribute Attribute Value
Manufacturer SiTime
Voltage - Supply 2.8V
Type VCXO
Spread Spectrum Bandwidth -
Size / Dimension 0.276" L x 0.197" W (7.00mm x 5.00mm)
Series SiT3372, Elite Platform™
Package / Case 6-SMD, No Lead Exposed Pad
Package Strip
Output HCSL
Operating Temperature -20°C ~ 70°C
Product Attribute Attribute Value
Mounting Type Surface Mount
Height - Seated (Max) 0.035" (0.90mm)
Function -
Frequency Stability ±50ppm
Frequency 14.4 MHz
Current - Supply (Max) 97mA
Current - Supply (Disable) (Max) -
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 electrical characteristics and performance specifications of the SIT3372AC-4E3-28NC14.400000 MEMS VCXO when operating within its rated supply voltage and temperature range?
The SIT3372AC-4E3-28NC14.400000 delivers a nominal output frequency of 14.4 MHz with HCSL signaling, powered by a 2.8V supply. It exhibits a frequency stability of ±50ppm across the industrial temperature range from -20°C to 70°C, ensuring reliable timing performance in demanding environments. The device consumes up to 97mA during active operation and features low jitter characteristics typical of SiTime’s Elite Platform MEMS technology. Its compact 6-SMD package measures just 7.00mm x 5.00mm with an exposed pad for enhanced thermal and electrical connection.
How does the SIT3372AC-4E3-28NC14.400000 compare to traditional quartz-based oscillators in terms of long-term reliability, shock resistance, and environmental robustness for use in high-vibration or thermally cycling applications?
Unlike crystal oscillators, the SIT3372AC-4E3-28NC14.400000 uses a MEMS resonator, which eliminates the risk of fracture under mechanical stress or vibration—critical in automotive and industrial systems. MEMS technology also provides superior tolerance to rapid temperature changes and outperforms quartz oscillators in long-term frequency drift due to absence of aging effects from material fatigue. This results in more stable timing over product lifetime and improved system reliability in harsh conditions where quartz components might fail prematurely.
Can the SIT3372AC-4E3-28NC14.400000 be used as a clock source for PCIe Gen3 or similar high-speed serial interfaces, and what design considerations should be taken into account regarding jitter and signal integrity?
Yes, the SIT3372AC-4E3-28NC14.400000 is suitable for PCIe Gen3 applications requiring precise 14.4 MHz reference clocks, provided its phase noise and jitter performance meet interface requirements. With SiTime’s MEMS architecture offering sub-picosecond RMS jitter, it can support tight timing margins. However, engineers must ensure proper PCB layout—minimizing trace length to the clock buffer, using controlled impedance routing for HCSL outputs, and decoupling the 2.8V supply with low-ESR capacitors near the device pins—to maintain signal integrity and minimize EMI.
What are the implications of the SIT3372AC-4E3-28NC14.400000’s Moisture Sensitivity Level (MSL) rating of 1 for assembly and storage in manufacturing environments with varying humidity levels?
With an MSL rating of 1, the SIT3372AC-4E3-28NC14.400000 is not sensitive to moisture absorption and does not require baking prior to reflow soldering. This simplifies production logistics and reduces handling constraints, making it ideal for high-volume manufacturing where storage conditions may fluctuate. Components can be stored indefinitely without degradation, eliminating the need for special packaging or pre-drying protocols during assembly.
In what ways does the absence of an Absolute Pull Range (APR) specification in the datasheet influence PLL loop design when integrating the SIT3372AC-4E3-28NC14.400000 into a synthesizer or clock multiplier circuit?
The lack of an APR value indicates that the oscillator’s frequency tuning capability via analog control voltage is either not implemented or not characterized. This means designers cannot rely on internal varactor-based pull-in range for fine frequency adjustment. As a result, external loop filters and VCO calibration routines in the PLL must be carefully designed to achieve lock stability across process, voltage, and temperature variations without depending on internal tuning headroom.
How should the SIT3372AC-4E3-28NC14.400000 be handled during PCB rework or repair, given its surface-mount packaging and exposed thermal pad?
Due to its small size and direct thermal connection through the exposed pad, the SIT3372AC-4E3-28NC14.400000 requires careful rework procedures. Use of hot-air rework stations with localized heating and flux-assisted soldering is recommended to avoid thermal shock. The exposed pad must remain properly soldered to the ground plane to preserve electrical and thermal performance; incomplete solder joints can lead to increased noise, instability, or premature failure. Preheating the board is advised to prevent delamination.
What trade-offs exist between using the SIT3372AC-4E3-28NC14.400000 versus a lower-cost fundamental-mode crystal oscillator at 14.4 MHz for a cost-sensitive consumer electronics application?
While crystal oscillators offer lower unit cost, they typically exhibit higher frequency drift over temperature (±100ppm or worse), greater susceptibility to shock and vibration, and inferior long-term stability due to aging. The SIT3372AC-4E3-28NC14.400000 trades initial cost for improved reliability, reduced BOM complexity, and easier compliance with system-level timing budgets—especially in designs requiring consistent performance across environmental extremes and long operational lifespans.
How does the spread spectrum bandwidth feature status affect the suitability of the SIT3372AC-4E3-28NC14.400000 for EMI-sensitive applications such as medical devices or RF front-ends?
Since no spread spectrum functionality is specified or enabled, the SIT3372AC-4E3-28NC14.400000 operates with fixed-frequency modulation, potentially contributing to narrowband EMI emissions at 14.4 MHz and its harmonics. In EMI-sensitive environments, additional filtering or layout shielding may be necessary unless the system employs software-based clock dithering or uses a variant with integrated spread spectrum modulation. Engineers should perform pre-compliance testing to verify spectral cleanliness.
What impact does the maximum supply current of 97mA have on power budgeting in battery-powered or space-constrained embedded systems using the SIT3372AC-4E3-28NC14.400000?
At peak current draw of 97mA, the SIT3372AC-4E3-28NC14.400000 consumes approximately 271mW at 2.8V, which is significant compared to ultra-low-power oscillators (<1mA). In battery-operated designs, this may necessitate duty-cycling or clock gating strategies to extend runtime. For space-limited systems, the power overhead must be weighed against performance gains in stability and immunity, possibly requiring trade-offs in overall system efficiency.
Is the SIT3372AC-4E3-28NC14.400000 compatible with automated optical inspection (AOI) and X-ray inspection systems commonly used in high-reliability manufacturing, and how does its packaging facilitate quality assurance?
Yes, the 6-SMD, no-lead package of the SIT3372AC-4E3-28NC14.400000 is fully compatible with standard AOI and X-ray inspection processes. The exposed pad provides clear visual access for solder joint verification, while the uniform footprint simplifies alignment during automated handling. This supports high-yield assembly in precision environments such as aerospace or medical instrumentation, where defect detection is critical for functional safety and regulatory compliance.
What role does the height-seated dimension (0.90mm max) play in board stacking and multi-layer PCB integration when deploying multiple SIT3372AC-4E3-28NC14.400000 units in dense layouts?
The low profile of 0.90mm enables tighter vertical spacing between adjacent components and supports compact, multi-layer designs without increasing overall stack-up height excessively. This is particularly valuable in modular systems or stacked PCBs where clearance between boards is limited. However, care must be taken during component placement to avoid thermal coupling effects, especially since the exposed pad conducts heat directly to the substrate.
How do the ECCN and HTSUS classifications (EAR99 and 8542.39.0001) influence global sourcing and export compliance considerations for the SIT3372AC-4E3-28NC14.400000?
Classified under EAR99, the SIT3372AC-4E3-28NC14.400000 is generally unrestricted for most international shipments under U.S. export regulations, simplifying logistics for non-restricted end-use applications. The HTSUS code 8542.39.0001 confirms its status as an electronic integrated circuit, aiding customs classification in import/export documentation. These classifications reduce administrative overhead but still require verification of end-user destination and intended application to comply with local semiconductor trade policies.
What precautions should be taken when replacing a failing crystal oscillator with the SIT3372AC-4E3-28NC14.400000 in legacy hardware to avoid introducing new failure modes?
When retrofitting, ensure compatibility in frequency, output type (HCSL vs LVDS/LVCMOS), and supply voltage. The SIT3372AC-4E3-28NC14.400000’s lower sensitivity to mechanical stress improves reliability, but its MEMS structure requires stable mounting to prevent resonant excitation from PCB flexure. Also verify that the host IC supports the required drive level and termination for HCSL output. Incorrect termination can cause reflections and degrade signal quality despite the oscillator’s inherent robustness.
How does the RoHS3 compliance status of the SIT3372AC-4E3-28NC14.400000 benefit designers targeting markets with evolving environmental regulations such as REACH, RoHS 3, and China RoHS?
RoHS3 compliance ensures the absence of restricted substances including lead, mercury, cadmium, PBB, PBDE, and four additional phthalates (DEHP, BBP, DBP, DIBP) above threshold limits. This future-proofs the SIT3372AC-4E3-28NC14.400000 for global distribution, avoids redesign risks due to changing legislation, and supports sustainability initiatives in corporate procurement policies. It also simplifies supply chain auditing and reduces liability exposure in regulated industries like automotive and consumer electronics.
What are the implications of selecting the SIT3372AC-4E3-28NC14.400000 over alternative VCXOs with spread spectrum or higher stability grades when aiming for minimal system jitter and deterministic latency?
Although the SIT3372AC-4E3-28NC14.400000 offers excellent MEMS-based jitter performance, its fixed ±50ppm stability and lack of spread spectrum mean it does not provide frequency agility or EMI mitigation. For applications requiring deterministic latency—such as real-time control loops or precision measurement systems—its stable output without modulation variation is advantageous. However, if EMI is a concern, additional filtering or a modulated oscillator variant may be preferable despite slightly higher complexity.
How should the SIT3372AC-4E3-28NC14.400000 be evaluated during prototype validation to confirm it meets both short-term performance and long-term reliability expectations?
During prototype testing, monitor startup time, frequency accuracy under transient loads, and phase noise profile using a spectrum analyzer. Perform accelerated life testing (ALT) simulating ten years of operation through thermal cycling (-20°C to 70°C), power cycling, and vibration exposure. Validate HCSL eye diagrams for rise/fall times and overshoot. Long-term frequency tracking over weeks or months will reveal any subtle drift beyond datasheet specs, confirming suitability for mission-critical deployments.

Parts with Similar Specifications

The three parts on the right have similar specifications to SiTime SIT3372AC-4E3-28NC14.400000

Product Attribute SIT3372AC-4E3-28NC140.000000 SIT3372AC-4E3-28NC148.500000 SIT3372AC-4E3-28NC128.000000 SIT3372AC-4E3-28NC10.000000
Part Number SIT3372AC-4E3-28NC140.000000 SIT3372AC-4E3-28NC148.500000 SIT3372AC-4E3-28NC128.000000 SIT3372AC-4E3-28NC10.000000
Manufacturer SiTime SiTime SiTime SiTime
Height - Seated (Max) - - - -
Type - - - -
Frequency - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Size / Dimension - - - -
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Current - Supply (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Spread Spectrum Bandwidth - - - -
Current - Supply (Disable) (Max) - - - -
Voltage - Supply - - - -
Frequency Stability - - - -
Output - - - -
Absolute Pull Range (APR) - - - -
Base Resonator - - - -
Function - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C

SIT3372AC-4E3-28NC14.400000 Datasheet PDF

Download SIT3372AC-4E3-28NC14.400000 pdf datasheets and SiTime documentation for SIT3372AC-4E3-28NC14.400000 - SiTime.

HTML Datasheet
SiT3372 Datasheet.pdf
Other Related Documents
Manufacturing Notes for SiTime Products.pdf
PCN Design/Specification
Mult Dev Material Chgs 26/Aug/2021.pdf

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    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.

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    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.

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

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SIT3372AC-4E3-28NC14.400000 Image

SIT3372AC-4E3-28NC14.400000

SiTime
98D-SIT3372AC-4E3-28NC14.400000

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