AX7DAF4-320.0000C Equivalent & Substitute Parts

Part Overview

The AX7DAF4-320.0000C is a 320 MHz XO (Standard) LVDS oscillator manufactured by Abracon LLC, part of the ClearClock™ AX7 series. This component operates at 3.3V with Enable/Disable functionality in an 8-SMD, No Lead surface mount package. The part is discontinued at DiGi Electronics, making identification of equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

AX7DAF4-320.0000C

Abracon LLCIn Stock: 1106AX7DAF4-320.0000C Datasheet

Current PartRFQ

591FB320M000DG

Skyworks Solutions Inc.In Stock: 792591FB320M000DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX7DAF4-320.0000C is based on the following critical parameters that must align across parts:

Core Functional Parameters (Must Match):

• Frequency: 320 MHz
• Output Type: LVDS
• Function: Enable/Disable
• Operating Temperature Range: -40°C ~ 85°C
• Frequency Stability: ±25ppm
• Base Resonator: Crystal
• Type: XO (Standard)

Mechanical Compatibility Parameters:

• Mounting Type: Surface Mount
• Size / Dimension: 7.00mm x 5.00mm (0.276" L x 0.197" W)

Electrical Compatibility Parameters:

• Supply Voltage: 3.3V (primary specification)
• Current consumption within acceptable design margins

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8542.39.0001

The 591FB320M000DG from Skyworks Solutions Inc. meets the core functional and mechanical requirements. However, note the supply voltage difference (2.5V vs. 3.3V) and package configuration variation (6-SMD vs. 8-SMD).

Parameter Comparison

Engineering Selection Recommendations

The 591FB320M000DG (Skyworks Solutions Inc., Si591 series) is the manufacturer-recommended substitute for the AX7DAF4-320.0000C. Both parts share identical frequency, output type, stability, and operating temperature specifications.

Key Considerations:

Supply voltage differs (2.5V vs. 3.3V). The 591FB320M000DG operates at 2.5V, which may require circuit-level evaluation if the original design depends on 3.3V supply characteristics.

Package configuration differs (6-SMD vs. 8-SMD). The footprint and pin count are not identical, requiring PCB layout verification.

Current consumption is higher in the substitute (100mA max vs. 70mA max). Power budget impact must be assessed in the target application.

Both parts maintain identical compliance status for ECCN (EAR99), HTSUS (8542.39.0001), and MSL (1 - Unlimited), ensuring regulatory and handling equivalence.

The Skyworks part is listed as Active status, providing ongoing availability and support compared to the discontinued Abracon part.

Frequently Asked Questions (FAQ)

Q: Can the 591FB320M000DG directly replace the AX7DAF4-320.0000C without circuit modifications?

A: Direct replacement requires evaluation of three factors: (1) supply voltage compatibility at 2.5V versus the original 3.3V specification, (2) PCB footprint compatibility due to different SMD package configurations (6-SMD vs. 8-SMD), and (3) current consumption impact (100mA vs. 70mA maximum). Circuit-level design review is necessary.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts share the same footprint dimensions (7.00mm x 5.00mm). However, the package types differ (8-SMD vs. 6-SMD), meaning the pin layout and pad configuration are not identical. PCB redesign is required.

Q: What is the significance of the frequency stability specification?

A: Both parts specify ±25ppm frequency stability, ensuring equivalent timing accuracy for applications requiring this tolerance. This parameter is critical for clock distribution and synchronization functions.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts share identical ECCN (EAR99), HTSUS (8542.39.0001), and MSL (1 - Unlimited) classifications. Regulatory and handling requirements are equivalent.

Q: Why does the substitute have higher current consumption?

A: The 591FB320M000DG specifies 100mA maximum supply current versus 70mA for the original part. This difference reflects different internal circuit design. Power supply capacity and thermal management must be evaluated for the target application.

Q: Is the substitute part currently available?

A: The 591FB320M000DG is listed as Active status with 751 pieces in stock, providing ongoing availability. The original AX7DAF4-320.0000C is discontinued at DiGi Electronics.