AX7DAF2-320.0000C Equivalent & Substitute Parts

Part Overview

The AX7DAF2-320.0000C is a 320 MHz XO (Standard) LVDS oscillator manufactured by Abracon LLC, part of the ClearClock™ AX7 series. This surface mount device operates at 3.3V with enable/disable functionality and is housed in an 8-SMD, No Lead package. The product is discontinued at DiGi Electronics, making identification of compatible substitute parts essential for ongoing design support and procurement.

Substiute Parts

AX7DAF2-320.0000C

Abracon LLCIn Stock: 986AX7DAF2-320.0000C Datasheet

Current PartRFQ

591FB320M000DG

Skyworks Solutions Inc.In Stock: 792591FB320M000DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX7DAF2-320.0000C is determined by the following critical parameters:

• Frequency: Must be 320 MHz (exact match required)
• Output Type: Must be LVDS (differential signaling compatibility)
• Function: Must support Enable/Disable capability
• Operating Temperature Range: Must cover -40°C ~ 85°C minimum
• Frequency Stability: Must meet ±25ppm or better
• Mounting Type: Must be Surface Mount compatible
• Package Footprint: Must be compatible with 7.00mm x 5.00mm land pattern
• RoHS Compliance: Must maintain ROHS3 Compliant status

The identified substitute part meets these core electrical and mechanical criteria. Voltage supply differences and package pin count variations are acceptable provided the electrical interface remains compatible with the application circuit design.

Parameter Comparison

Engineering Selection Recommendations

The 591FB320M000DG (Skyworks Solutions Inc., Si591 series) is an active product suitable for replacing the discontinued AX7DAF2-320.0000C. Both devices share identical frequency, output type, function, frequency stability, and operating temperature specifications.

Key considerations for selection:

• Voltage Supply: The substitute operates at 2.5V versus the original 3.3V. Circuit design must accommodate this lower supply voltage or include appropriate voltage regulation.
• Current Consumption: The substitute draws up to 100mA maximum supply current compared to 70mA for the original. Power budget analysis is required.
• Package Pin Count: The substitute uses a 6-SMD package versus the original 8-SMD package. PCB layout and footprint redesign is necessary.
• Product Status: The substitute is an active product with ongoing manufacturer support, ensuring long-term availability and supply chain stability.
• Compliance: Both devices maintain EAR99 export classification and MSL 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can the 591FB320M000DG be used as a direct drop-in replacement for the AX7DAF2-320.0000C?

A: No. While both devices share the same frequency, output type, and operating temperature range, the 591FB320M000DG requires circuit modifications due to lower supply voltage (2.5V vs. 3.3V), different pin configuration (6-SMD vs. 8-SMD), and higher current consumption (100mA vs. 70mA). PCB redesign is necessary.

Q: What are the critical electrical parameters that must match for substitution?

A: Frequency (320 MHz), output type (LVDS), enable/disable function, frequency stability (±25ppm), and operating temperature range (-40°C ~ 85°C) must remain identical. Supply voltage and current consumption may differ if the application circuit is redesigned accordingly.

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

A: Both parts maintain ROHS3 compliance, EAR99 export classification, and MSL 1 moisture sensitivity rating. The substitute's RoHS status is not explicitly specified in available data but should be confirmed with the manufacturer.

Q: What is the impact of the package change from 8-SMD to 6-SMD?

A: The package footprint dimensions (7.00mm x 5.00mm) remain identical, but the pin count and internal layout differ. PCB layout modifications are required, and pin-to-function mapping must be verified against the substitute's datasheet before implementation.

Q: How does the voltage difference affect circuit design?

A: The substitute operates at 2.5V instead of 3.3V. The application circuit must either be redesigned to operate at 2.5V or include a voltage regulator to step down the 3.3V supply. This affects power distribution, signal integrity, and interface compatibility with downstream components.