Data sheet: AX5PAF4-780.000.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

AX5PAF4-780.0000C Tech Specifications
Abracon LLC - AX5PAF4-780.0000C technical specifications, attributes, parameters and parts with similar specifications to Abracon LLC - AX5PAF4-780.0000C

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	780 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 AX5PAF4-780.0000C oscillator’s frequency stability of ±20ppm impact timing accuracy in a 780 MHz LVPECL clock distribution system operating across industrial temperature ranges?: Over the full -40°C to 85°C operating range, the ±20ppm frequency stability ensures that the AX5PAF4-780.0000C maintains timing within 156 picoseconds per cycle at 780 MHz, which is critical for minimizing phase noise and jitter accumulation in high-speed serial links. This level of precision supports reliable synchronization in applications such as 10G Ethernet or advanced FPGAs where clock skew must remain below 100 ps over system lifetime.

What are the power consumption implications when enabling versus disabling the AX5PAF4-780.0000C, and how do these values affect thermal design in compact PCB layouts?: When enabled, the AX5PAF4-780.0000C draws up to 110mA at 3.3V, resulting in approximately 363mW of power dissipation. In disable mode, it consumes less than 100µA, reducing standby power by three orders of magnitude. For densely populated boards, this significant difference necessitates careful trace routing and thermal relief around the oscillator footprint to avoid localized heating during active operation.

Can the AX5PAF4-780.0000C be used as a replacement for a standard LVCMOS oscillator in a legacy system requiring 3.3V logic levels, and what signal integrity trade-offs should be considered?: While both output types operate at 3.3V, the AX5PAF4-780.0000C provides LVPECL signaling, which requires AC coupling and termination resistors near the receiver due to its differential nature. Direct substitution into an LVCMOS input stage without proper impedance matching will result in signal distortion and potential logic errors, making it unsuitable for direct pin-to-pin replacement despite voltage compatibility.

How does the ClearClock™ architecture in the AX5PAF4-780.0000C improve jitter performance compared to conventional crystal oscillators, particularly at 780 MHz?: The ClearClock™ technology incorporates internal feedback control and low-noise amplification stages that suppress spurious emissions and reduce integrated jitter by up to 60% compared to standard XO designs. At 780 MHz, this translates to sub-100 fs RMS jitter, which is essential for maintaining eye diagram openness in high-bandwidth communication channels.

What layout considerations are necessary when mounting the AX5PAF4-780.0000C on a high-frequency PCB to minimize EMI and ensure stable oscillation?: Due to its 780 MHz fundamental frequency and LVPECL output, the AX5PAF4-780.0000C demands strict grounding practices—the exposed pad must connect directly to a solid ground plane with multiple vias. Keep-out zones around the package should extend at least 2 mm from signal traces, and differential output routing must maintain controlled impedance (typically 100Ω) with matched length and spacing to preserve phase balance.

Is the AX5PAF4-780.0000C suitable for use in aerospace or defense applications requiring radiation-hardened components, and what documentation supports its qualification?: No, the AX5PAF4-780.0000C is a commercial-grade device and lacks radiation tolerance testing or MIL-SPEC certification. Its RoHS3 compliance and EAR99 classification indicate civilian market orientation; users requiring space-qualified timing solutions must select alternative parts from qualified vendors with appropriate screening data.

How does the MSL rating of 1 for the AX5PAF4-780.0000C influence storage and handling procedures during mass production?: With an MSL rating of 1, the AX5PAF4-780.0000C is not sensitive to moisture and can be stored indefinitely under normal ambient conditions without baking prior to reflow. This simplifies inventory management and reduces manufacturing overhead, making it ideal for continuous assembly lines where lead times vary.

What impact does supply current variation between enable and disable states have on dynamic power management strategies in battery-powered embedded systems?: Although the AX5PAF4-780.0000C is not designed for portable use, its ultra-low disable current (<100µA) allows designers to implement aggressive sleep modes where the oscillator can be powered down during idle periods. However, due to its high active current (110mA), total system power remains dominated by active-mode consumption, limiting battery life benefits unless the application spends most time in deep sleep.

How does the physical size of the AX5PAF4-780.0000C compare to other common oscillator packages like the 6-pin SMD, and what board real estate savings does it offer?: Measuring 5.00mm × 3.20mm, the AX5PAF4-780.0000C occupies roughly 60% of the area of a typical 6-pin 2.5mm × 2.0mm oscillator. This compact footprint enables higher component density on multilayer PCBs, especially beneficial in space-constrained designs such as modular test equipment or miniaturized server blades.

What role does the Enable/Disable function play in reducing electromagnetic interference from the AX5PAF4-780.0000C during system initialization or fault conditions?: Activating the disable pin halts oscillation entirely, cutting off RF emissions that could interfere with adjacent sensitive circuits. During boot sequences or error recovery cycles, this feature helps prevent transient noise spikes that might otherwise disrupt microcontroller operation or corrupt data transmission.

Can the AX5PAF4-780.0000C operate reliably in environments with rapid temperature cycling beyond its specified -40°C to 85°C range, and what failure mechanisms might arise?: Operating outside the rated -40°C to 85°C window risks crystal stress fractures due to coefficient of expansion mismatch between materials, leading to frequency drift or outright failure. Additionally, repeated thermal shock may compromise solder joints in the 8-SMD package, increasing long-term reliability risk even if initial functionality appears normal.

Why is AC coupling required when interfacing the AX5PAF4-780.0000C LVPECL output to a differential receiver, and how does this affect signal integrity at 780 MHz?: LVPECL outputs swing symmetrically around VCC/2, producing DC-balanced signals that require capacitive isolation to block DC offset while passing high-frequency transitions. Without AC coupling, common-mode voltage mismatches can shift the receiver input thresholds, causing duty cycle distortion and increased bit error rates—especially problematic at 780 MHz where rise/fall times are typically <100 ps.

Parts with Similar Specifications

The three parts on the right have similar specifications to Abracon LLC AX5PAF4-780.0000C

Product Attribute
Part Number	AX5PAF4-768.0000C	AX5PAF4-780.0000T	AX5PAF4-790.0000C	AX5PAF4-800.0000C
Manufacturer	Abracon LLC	Abracon LLC	Abracon LLC	Abracon LLC
Current - Supply (Max)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Ratings	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Frequency Stability	-	-	-	-
Base Resonator	-	-	-	-
Series	-	-	-	-
Voltage - Supply	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Output	-	-	-	-
Function	-	-	-	-
Absolute Pull Range (APR)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Height - Seated (Max)	-	-	-	-
Size / Dimension	-	-	-	-
Current - Supply (Disable) (Max)	-	-	-	-
Type	-	-	-	-
Frequency	-	-	-	-

AX5PAF4-780.0000C Datasheet PDF

Download AX5PAF4-780.0000C pdf datasheets and Abracon LLC documentation for AX5PAF4-780.0000C - 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.
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.
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Aug 13, 2026

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

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