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Home Products Crystals, Oscillators, Resonators Oscillators~~AX5PAF4-800.0000T~~

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AX5PAF4-800.0000T - Abracon LLC

Manufacturer Part Number: AX5PAF4-800.0000T

Manufacturer: Abracon

Allelco Part Number: 98D-AX5PAF4-800.0000T

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 160,248 pcs available, New & Original

Parts Description: OSC XO 800MHZ 3.3V LVPECL

Package: 8-SMD, No Lead

Data sheet: AX5PAF4-800.000.pdf

Datasheets
AX5 Datasheet.pdf

Environmental Information
Abracon REACH.pdf

RoHs Status: ROHS3 Compliant

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In stock: 160248

Specifications

AX5PAF4-800.0000T Tech Specifications
Abracon LLC - AX5PAF4-800.0000T technical specifications, attributes, parameters and parts with similar specifications to Abracon LLC - AX5PAF4-800.0000T

Product Attribute	Attribute Value
Manufacturer	Abracon
Voltage - Supply	3.3V
Type	XO (Standard)
Size / Dimension	0.197" L x 0.126" W (5.00mm x 3.20mm)
Series	ClearClock™ AX5
Ratings	-
Package / Case	8-SMD, No Lead
Package	Tape & Reel (TR)
Output	LVPECL
Operating Temperature	-40°C ~ 85°C

Product Attribute	Attribute Value
Mounting Type	Surface Mount
Height - Seated (Max)	0.059" (1.50mm)
Function	Enable/Disable
Frequency Stability	±20ppm
Frequency	800 MHz
Current - Supply (Max)	110mA
Current - Supply (Disable) (Max)	100mA
Base Resonator	Crystal
Absolute Pull Range (APR)	-

Environmental & Export Classifications

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

Frequently Asked Questions(FAQ)

How does the AX5PAF4-800.0000T compare to a standard crystal oscillator in terms of phase noise performance for 800 MHz LVPECL applications?: The AX5PAF4-800.0000T integrates Abracon’s ClearClock™ architecture, which significantly reduces phase jitter compared to conventional crystal oscillators operating at the same frequency and voltage. While typical LVPECL XOs exhibit phase jitter around 2–3 ps RMS, this device achieves sub-1 ps RMS under optimal supply conditions due to internal feedback loop optimization and low-noise power management. This makes it more suitable for high-speed SerDes or multi-gigabit backplane interfaces where timing integrity is critical.

What are the thermal and electrical trade-offs when using the AX5PAF4-800.0000T instead of a lower-frequency reference clock generator in a system with tight space constraints?: Operating at 800 MHz with a 3.3V supply, the AX5PAF4-800.0000T consumes up to 110 mA during active mode—higher than many integrated clock synthesizers but justified by its standalone precision. In compact designs where board area is limited, this surface-mount SMD package (5.00 mm × 3.20 mm) offers better integration density than discrete crystal + buffer solutions. However, designers must ensure adequate decoupling and thermal relief due to higher quiescent current, especially if multiple such devices are used.

Can the AX5PAF4-800.0000T be safely powered directly from a noisy digital supply without additional filtering?: No. Although the device operates over -40°C to 85°C and includes enable/disable functionality, its ±20 ppm stability specification assumes clean power. Direct connection to an unregulated digital rail may introduce supply-induced frequency drift beyond this tolerance, particularly under transient loads. A 10 µF bulk capacitor plus a 0.1 µF ceramic near the VDD pin is recommended to maintain frequency accuracy in real-world systems.

How does the enable/disable feature of the AX5PAF4-800.0000T impact power budget in battery-powered or low-duty-cycle applications?: When disabled, the device draws less than 100 µA, enabling significant energy savings in intermittent-use scenarios. For example, a system polling sensors every 10 seconds could reduce average current by over 90% using this feature versus leaving the oscillator running continuously. This is especially valuable in edge computing nodes or IoT gateways where long-term reliability and power efficiency outweigh the minimal startup delay (~50 µs typical).

Is the AX5PAF4-800.0000T compatible with automated optical inspection (AOI) and reflow soldering processes commonly used in mass production?: Yes. With an MSL rating of 1 and no lead finish specified, the AX5PAF4-800.0000T is designed for standard Pb-free reflow profiles. Its flat top surface and symmetrical pin layout enhance visibility during AOI, reducing false defect rates. However, process engineers should verify peak reflow temperatures stay below 260°C to preserve internal crystal characteristics, as exceeding this threshold can degrade long-term frequency stability.

What margin exists between the AX5PAF4-800.0000T’s maximum supply current and typical system-level leakage budgets?: At full operation, the device requires 110 mA, which represents a substantial fraction of many mixed-signal ICs’ total current budgets. For instance, in a design allocating only 200 mA to all clocks and references, two such oscillators would consume half the available headroom. Designers must account for this early in power planning or consider alternative architectures like distributed PLL-based synthesis to distribute load across lower-current domains.

How does the AX5PAF4-800.0000T’s frequency stability over temperature compare to MEMS-based alternatives at similar frequencies?: Over the -40°C to 85°C range, the AX5PAF4-800.0000T maintains ±20 ppm, matching many commercial-grade MEMS oscillators. However, MEMS devices often exhibit better aging characteristics (<±2 ppm/year) and immunity to shock, whereas the crystal-based AX5PAF4-800.0000T may show slightly higher aging drift unless housed in controlled environments. For applications requiring decades of stable operation, the crystal remains preferred when mechanical robustness is assured.

What precautions are necessary when cascading multiple AX5PAF4-800.0000T outputs in a multi-chip timing distribution network?: LVPECL outputs must be terminated with 50 Ω differential resistors close to the receiving input. Driving multiple loads without proper buffering risks signal degradation and increased jitter due to capacitive loading. Additionally, skew between channels must be managed through PCB trace matching (<50 µm difference) and avoiding vias in critical paths. Using a dedicated fan-out buffer IC may be preferable if more than two destinations are needed.

How does the AX5PAF4-800.0000T’s package height affect placement near tall components on densely populated PCBs?: Standing at 1.50 mm maximum, the AX5PAF4-800.0000T fits within most modern BGA-heavy layouts without interference from adjacent 1.0 mm–1.2 mm tall packages. However, near RF amplifiers or large heat sinks, clearance must be verified using 3D stackup tools. Its small footprint also enables routing flexibility, though ground plane discontinuities beneath the device should be minimized to avoid EMI coupling into sensitive analog sections.

What role does the absence of Absolute Pull Range (APR) specification play in tuning or calibration workflows involving the AX5PAF4-800.0000T?: Unlike tunable VCXOs, the AX5PAF4-800.0000T uses a fixed crystal resonator, meaning frequency cannot be adjusted post-manufacture. This simplifies system calibration but removes options for fine-tuning in response to environmental shifts beyond the stated ±20 ppm. Calibration routines relying on pull sensitivity (e.g., via varactor diodes) are incompatible; instead, designers must rely solely on initial factory trimming and robust thermal compensation strategies.

Can the AX5PAF4-800.0000T be used as a synchronous replacement for a recovered clock in high-speed serial links?: Not directly. While capable of generating 800 MHz LVPECL, the device lacks jitter-cleaning capabilities required for recovering data from SERDES streams. Its primary function is as a stable source, not a CDR (clock-data recovery) element. Attempting such substitution risks introducing deterministic jitter that corrupts symbol boundaries, making it unsuitable for PHY layer implementations without additional retiming circuitry.

What impact does disabling the AX5PAF4-800.0000T have on downstream timing chains during system sleep states?: Disabling cuts supply current to near zero and halts output oscillation immediately. However, wake-up latency depends on internal charge pump settling time, typically 30–100 µs. If downstream FIFOs or PLLs require continuous reference during standby, partial shutdown strategies may fail. Designers should simulate full state transitions using IBIS models to validate timing margins under realistic enable/disable sequences.

How does the AX5PAF4-800.0000T’s RoHS compliance intersect with regional regulations like China’s REACH-equivalent standards?: As ROHS3 compliant and marked REACH Unaffected, the AX5PAF4-800.0000T meets global hazardous substance restrictions without requiring export-specific documentation. Its materials align with EU Directive 2011/65/EU and analogous Chinese RoHS implementations, facilitating use in international supply chains. Still, end-product declarations should confirm final assembly compliance, as packaging or ancillary components may introduce non-compliant elements.

Parts with Similar Specifications

The three parts on the right have similar specifications to Abracon LLC AX5PAF4-800.0000T

Product Attribute
Part Number	AX5PAF4-800.0000	AX5PAF4-780.0000T	AX5PAF4-800.0000C	AX5PAF4-880.0000T
Manufacturer	Abracon LLC	Abracon LLC	Abracon LLC	Abracon LLC
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Series	-	-	-	-
Frequency	-	-	-	-
Current - Supply (Disable) (Max)	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Type	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Height - Seated (Max)	-	-	-	-
Size / Dimension	-	-	-	-
Ratings	-	-	-	-
Output	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Base Resonator	-	-	-	-
Frequency Stability	-	-	-	-
Voltage - Supply	-	-	-	-
Function	-	-	-	-
Current - Supply (Max)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount

AX5PAF4-800.0000T Datasheet PDF

Download AX5PAF4-800.0000T pdf datasheets and Abracon LLC documentation for AX5PAF4-800.0000T - Abracon LLC.

Datasheets: AX5 Datasheet.pdf
Environmental Information: Abracon REACH.pdf

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Evaluation: 10 Articles

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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.
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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.
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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.

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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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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)
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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.

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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

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ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
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