Data sheet: AX5PAF4-810.000.pdf

Datasheets
AX5 Datasheet.pdf

PCN Part Status Change
Mult Devices 15/Apr/2019.pdf

Environmental Information
Abracon REACH.pdf

RoHs Status: ROHS3 Compliant

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Specifications

AX5PAF4-810.0000C Tech Specifications
Abracon LLC - AX5PAF4-810.0000C technical specifications, attributes, parameters and parts with similar specifications to Abracon LLC - AX5PAF4-810.0000C

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	Strip
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	810 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 AX5PAF4-810.0000C compare to a standard crystal oscillator in terms of frequency stability and phase noise for high-speed serial link applications?: The AX5PAF4-810.0000C integrates ClearClock™ technology, which significantly improves frequency stability over conventional crystal oscillators by maintaining ±20ppm across its operating temperature range. This level of precision is critical when driving high-speed interfaces such as 810MHz LVPECL signals, where even minor timing deviations can accumulate into bit errors. Unlike basic crystal resonators, this device includes built-in compensation that reduces the impact of ambient thermal variations, making it more suitable for stable clocking in systems like SerDes or fiber optic transceivers.

What are the key differences between enabling the AX5PAF4-810.0000C via hardware control versus software-based disable functionality in system design?: The AX5PAF4-810.0000C supports an active-low enable/disable pin, allowing designers to power down the oscillator during low-bandwidth periods to save energy. When disabled, the supply current drops from 110mA (typical) to under 100µA, depending on implementation. This feature enables dynamic power management without requiring a full reset of the clock source. However, transitioning from enabled to disabled state introduces a brief startup delay—typically hundreds of microseconds—so designers must account for this latency in applications with strict timing requirements.

Can the AX5PAF4-810.0000C be used in redundant clock architectures, and what considerations apply for synchronization and holdover performance?: Yes, the AX5PAF4-810.0000C can serve as a primary or backup clock in dual-clock topologies, provided both units are synchronized through external logic. Because it lacks internal holdover circuitry (such as a voltage-controlled oscillator), any switchover to this device will result in an immediate frequency change if not precisely aligned. In such cases, careful calibration of phase alignment using edge detection and feedback loops is necessary to avoid data misalignment during transitions.

How does the 3.3V supply requirement of the AX5PAF4-810.0000C affect board-level power budgeting compared to lower-voltage alternatives?: Operating at 3.3V with a maximum supply current of 110mA results in a peak power consumption of approximately 363mW. While higher than some CMOS-based oscillators running at 1.8V, this trade-off delivers superior signal integrity for LVPECL outputs—critical at 810MHz. Designers must ensure adequate decoupling capacitance near the VCC pin and consider thermal dissipation, especially in compact layouts where multiple high-frequency clocks coexist.

What layout precautions are essential when routing traces adjacent to the AX5PAF4-810.0000C to maintain signal integrity and minimize jitter?: Due to its high output frequency, the AX5PAF4-810.0000C demands strict impedance control on its LVPECL differential pair. Keep differential traces tightly coupled (e.g., 100Ω differential impedance) and maintain consistent spacing to reduce skew. Avoid crossing split planes or switching layers unnecessarily within the first few millimeters of the output path. Ground stitching vias should be placed close to the package to suppress radiated emissions and stabilize reference return paths.

Why might the AX5PAF4-810.0000C be preferred over a TCXO or OCXO despite having no temperature compensation or ovenization features?: Although not compensated for extreme temperatures beyond -40°C to +85°C, the AX5PAF4-810.0000C achieves sufficient stability (±20ppm) for many mid-tier communication standards without the bulk, power overhead, or cost of TCXOs or OCXOs. Its integration of digital enable control and small form factor make it ideal for space-constrained designs like optical modules or FPGA-based backplanes where moderate environmental exposure suffices.

How does the MSL rating of 1 influence handling procedures during assembly compared to components rated MSL 3 or higher?: With an MSL rating of 1, the AX5PAF4-810.0000C is not moisture-sensitive and can be stored indefinitely at room conditions without requiring dry packaging or baking prior to soldering. This simplifies inventory logistics and reduces processing steps in high-volume manufacturing, unlike components prone to popcorning during reflow unless properly handled under controlled humidity environments.

In what scenarios would the discontinued status of the AX5PAF4-810.0000C necessitate redesign efforts, and what alternative strategies exist?: Since the AX5PAF4-810.0000C is discontinued at Digi-Key, long-term availability may become uncertain. Designers should evaluate whether newer Abracon models with similar characteristics (e.g., AX5 series variants) offer drop-in compatibility. If not, migration to actively managed oscillators with equivalent LVPECL output and enable function—while verifying footprint and electrical compatibility—is advisable to ensure sustained production viability.

Parts with Similar Specifications

The three parts on the right have similar specifications to Abracon LLC AX5PAF4-810.0000C

Product Attribute
Part Number	AX5PAF4-910.0000C	AX5PAF4-880.0000C	AX5PAF4-810.0000	AX5PAF4-810.0000T
Manufacturer	Abracon LLC	Abracon LLC	Abracon LLC	Abracon LLC
Type	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Size / Dimension	-	-	-	-
Voltage - Supply	-	-	-	-
Function	-	-	-	-
Series	-	-	-	-
Base Resonator	-	-	-	-
Output	-	-	-	-
Frequency	-	-	-	-
Height - Seated (Max)	-	-	-	-
Current - Supply (Max)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Absolute Pull Range (APR)	-	-	-	-
Current - Supply (Disable) (Max)	-	-	-	-
Frequency Stability	-	-	-	-
Ratings	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C

AX5PAF4-810.0000C Datasheet PDF

Download AX5PAF4-810.0000C pdf datasheets and Abracon LLC documentation for AX5PAF4-810.0000C - Abracon LLC.

Datasheets: AX5 Datasheet.pdf
PCN Part Status Change: Mult Devices 15/Apr/2019.pdf
Environmental Information: Abracon REACH.pdf

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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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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.
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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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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.
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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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Aug 20, 2026

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

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This product works considerably well. It secretly improves my basketball by a lot.
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Aug 17, 2026

Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.
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Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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