AX5DBF4-644.53125C Equivalent & Substitute Parts

Part Overview

The AX5DBF4-644.53125C is a 644.53125 MHz XO (Standard) LVDS Oscillator manufactured by Abracon LLC as part of the ClearClock™ AX5 series. This surface mount oscillator operates at 2.5V with Enable/Disable functionality and is housed in an 8-SMD, No Lead package. The part is currently discontinued at DiGi Electronics, making identification of equivalent substitute components essential for ongoing design support and procurement.

Substiute Parts

AX5DBF4-644.53125C

Abracon LLCIn Stock: 1040AX5DBF4-644.53125C Datasheet

Current PartRFQ

AX5DBF1-644.53125C

Abracon LLCIn Stock: 969AX5DBF1-644.53125C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX5DBF4-644.53125C is determined by strict equivalence across the following critical parameters:

Frequency Match: 644.53125 MHz (exact frequency required for system timing specifications)

Output Configuration: LVDS (Low-Voltage Differential Signaling) output type

Supply Voltage: 2.5V operation

Functional Capability: Enable/Disable control function

Package Specification: 8-SMD, No Lead surface mount package with identical physical dimensions (5.00mm x 3.20mm x 1.50mm max height)

Electrical Performance: Frequency stability of ±20ppm, maximum supply current of 80mA, and maximum disable current of 70mA

Environmental & Compliance: Operating temperature range of -40°C to 85°C, ROHS3 compliance, MSL 1 rating, and REACH unaffected status

The substitute part AX5DBF1-644.53125C meets all these criteria and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The AX5DBF1-644.53125C serves as a direct parametric equivalent to the discontinued AX5DBF4-644.53125C. Both components are manufactured by Abracon LLC within the ClearClock™ AX5 series and share identical electrical, mechanical, and environmental specifications.

Selection of the AX5DBF1-644.53125C is supported by:

Product Continuity: Both parts maintain the same frequency, output configuration, and supply voltage requirements, ensuring seamless integration into existing circuit designs.

Compliance Alignment: Both components maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity ratings, satisfying regulatory and environmental requirements.

Electrical Performance: Matching frequency stability, supply current specifications, and operating temperature ranges ensure equivalent system performance.

Physical Compatibility: Identical package dimensions and surface mount configuration enable direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the AX5DBF1-644.53125C be used as a direct replacement for the AX5DBF4-644.53125C?

A: Yes. The AX5DBF1-644.53125C is a parametric equivalent with identical electrical specifications, output type, supply voltage, frequency, and package configuration. Direct substitution is supported without circuit modification.

Q: Are there any differences in frequency stability between these parts?

A: No. Both components specify ±20ppm frequency stability across the operating temperature range of -40°C to 85°C.

Q: Do both parts support the same Enable/Disable functionality?

A: Yes. Both the AX5DBF4-644.53125C and AX5DBF1-644.53125C include Enable/Disable control functionality with identical maximum supply current (80mA) and disable current (70mA) specifications.

Q: Are the package dimensions identical?

A: Yes. Both parts use an 8-SMD, No Lead package with dimensions of 5.00mm length, 3.20mm width, and 1.50mm maximum seated height. PCB footprints are interchangeable.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the supply voltage requirement for both parts?

A: Both parts operate at 2.5V supply voltage with a maximum supply current of 80mA during normal operation.