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Home > Products > Crystals, Oscillators, Resonators > Oscillators > SIT3372AC-1B3-33NG80.000000
SiTime
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SIT3372AC-1B3-33NG80.000000

In Stock 9952 pcs Reference Price(In US Dollars)
1+
$10.0353
200+
$4.0041
500+
$3.8703
1000+
$3.805
Manufacturer Part Number:
SIT3372AC-1B3-33NG80.000000
Manufacturer / Brand
SiTime
Part of Description:
MEMS OSC VCXO 80.0000MHZ LVPECL
Datasheets:
SIT3372AC-1B3-33NG80.000000(1).pdfSIT3372AC-1B3-33NG80.000000(2).pdfSIT3372AC-1B3-33NG80.000000(3).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 9952 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number SIT3372AC-1B3-33NG80.000000
Manufacturer / Brand SiTime
Stock Quantity 9952 pcs Stock
Category Crystals, Oscillators, Resonators > Oscillators
Description MEMS OSC VCXO 80.0000MHZ LVPECL
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Supply 3.3V
Type VCXO
Spread Spectrum Bandwidth -
Size / Dimension 0.126" L x 0.098" W (3.20mm x 2.50mm)
Series SiT3372, Elite Platform™
Package / Case 6-SMD, No Lead
Package Strip
Output LVPECL
Operating Temperature -20°C ~ 70°C
Mounting Type Surface Mount
Height - Seated (Max) 0.035" (0.90mm)
Function -
Frequency Stability ±50ppm
Frequency 80 MHz
Current - Supply (Max) 92mA
Current - Supply (Disable) (Max) -
Base Resonator MEMS
Absolute Pull Range (APR) ±95ppm

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can the SIT3372AC-1B3-33NG80.000000 be used as a direct replacement for a fixed-frequency 80 MHz LVPECL oscillator in an existing 3.3 V design?
The SIT3372AC-1B3-33NG80.000000 can replace a fixed 80 MHz LVPECL clock source only if the receiving circuitry tolerates the VCXO’s control behavior and the board already supports LVPECL signaling at 3.3 V. Because it is a VCXO, the output frequency can be adjusted around nominal, so designers should verify that the downstream PLL, FPGA, or clock tree is not sensitive to small frequency changes during tuning. If the original part was a non-tunable oscillator, the control pin usage and loop dynamics need to be checked before substitution.
What should I verify before using the SIT3372AC-1B3-33NG80.000000 in a PLL or clock-cleaning loop?
For the SIT3372AC-1B3-33NG80.000000, confirm that the loop filter, tuning range usage, and capture range align with the VCXO’s absolute pull range of ±95 ppm and stability of ±50 ppm. The control voltage transfer characteristic should fit the loop design so the PLL can hold lock across process, temperature, and supply variation. If the loop was designed for a different VCXO family, the tuning slope and center voltage may require retuning.
Is the SIT3372AC-1B3-33NG80.000000 suitable for long-term industrial operation across wide temperature swings?
The SIT3372AC-1B3-33NG80.000000 is specified for -20°C to 70°C, so it suits moderate industrial environments but not extended-temperature or harsh outdoor conditions without additional margin analysis. In long-term use, designers should examine whether the frequency budget remains acceptable at the temperature extremes and whether airflow, enclosure heating, or board hot spots move the oscillator outside its validated range. If the application sees continuous elevated temperature, derating or a wider-temperature option is usually the safer design path.
What signal integrity issues can appear when interfacing the SIT3372AC-1B3-33NG80.000000 to an FPGA or ASIC clock input?
The SIT3372AC-1B3-33NG80.000000 uses LVPECL output, so the receiving input must support differential PECL-style signaling or use proper translation and termination. Incorrect biasing or missing termination can cause excessive common-mode shift, degraded edge rates, or intermittent clock faults. Before layout freeze, check the target device’s input standard, required termination network, and trace symmetry so the 80 MHz clock arrives within valid differential limits.
How do I know if the SIT3372AC-1B3-33NG80.000000 can replace a CMOS oscillator on the same board?
The SIT3372AC-1B3-33NG80.000000 is not a drop-in electrical replacement for a CMOS-output oscillator because LVPECL has different voltage levels, termination requirements, and common-mode behavior. A board designed for CMOS may not have the correct bias network or receiver input standard, so direct substitution can fail even if the footprint appears compatible. If a migration is needed, the clock distribution path, power rail, and receiver compatibility should be reviewed together.
What are the practical trade-offs of choosing the SIT3372AC-1B3-33NG80.000000 over a simpler fixed oscillator?
The SIT3372AC-1B3-33NG80.000000 gives frequency tuning capability, which is useful when a system needs small corrections for synchronization or phase alignment. The trade-off is added design complexity: the control loop, reference stability, and termination must all be managed carefully. If the application does not need adjustment, a fixed oscillator may reduce risk, simplify validation, and lower integration effort.
Can the SIT3372AC-1B3-33NG80.000000 help when replacing an older SiTime or non-SiTime clock part with tighter timing needs?
The SIT3372AC-1B3-33NG80.000000 can be a practical migration candidate when a design needs a 3.3 V LVPECL VCXO at 80 MHz and the footprint and tuning behavior match the system requirements. Engineers should compare the old part’s pull range, output format, startup behavior, and load conditions rather than relying on frequency alone. When replacing another vendor’s VCXO, confirm that the new part’s center frequency and control sensitivity still support the existing compensation loop.
What layout and power-supply precautions should be taken with the SIT3372AC-1B3-33NG80.000000?
The SIT3372AC-1B3-33NG80.000000 should be placed with short, symmetric differential routing and a clean 3.3 V supply to preserve jitter performance and edge quality. Because LVPECL outputs can be sensitive to termination placement, the resistors should be located close to the receiver or according to the chosen termination topology. Good local decoupling and separation from noisy switching regulators help prevent control-line or supply-coupled modulation from disturbing the VCXO.
When would the SIT3372AC-1B3-33NG80.000000 not be a good fit for a design?
The SIT3372AC-1B3-33NG80.000000 is a poor fit when the system expects a low-current clock source, a single-ended output, or operation outside the -20°C to 70°C range. It is also less suitable if the design cannot accommodate a tunable oscillator or lacks the termination needed for LVPECL. In those cases, the clock architecture usually works better with a different output standard or a fixed-frequency device.
What reliability checks matter most before qualifying the SIT3372AC-1B3-33NG80.000000 in production?
For the SIT3372AC-1B3-33NG80.000000, production qualification should focus on frequency behavior over temperature, start-up consistency, and how the VCXO responds to board-level noise and supply variation. Since it is an MSL 1 device, handling sensitivity is low, but normal ESD, reflow profile, and solder-joint quality controls still apply. A system-level soak test with the actual termination, PCB stackup, and control circuitry is the best way to confirm stable field behavior.

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