CFSV7 Equivalent & Substitute Parts Reference

Part Overview

The CFSV7 is a 622.08 MHz XO (Standard) LVDS oscillator manufactured by Cardinal Components Inc., designed for applications requiring precision frequency generation with enable/disable functionality. This part operates at 3.3V supply voltage and is housed in a 6-SMD, No Lead surface mount package. The CFSV7 is classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CFSV7

Cardinal Components Inc.In Stock: 1158CFSV7 Datasheet

Current PartRFQ

XLL53V622.080000I

Renesas Electronics CorporationIn Stock: 912XLL53V622.080000I Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CFSV7 is determined by the following critical parameters that must remain constant or compatible:

Mandatory Matching Parameters:

• Frequency: 622.08 MHz (exact match required)
• Output Type: LVDS (electrical interface compatibility)
• Supply Voltage: 3.3V (power supply compatibility)
• Function: Enable/Disable (control interface requirement)
• Package / Case: 6-SMD, No Lead (PCB footprint compatibility)

Allowable Variation Parameters:

• Frequency Stability: Substitute may have different specification if application requirements permit
• Operating Temperature Range: Substitute may have extended range
• Current - Supply (Max): Substitute may have higher rating if power budget allows
• Physical Dimensions: Substitute may differ if footprint compatibility is maintained through package standardization

The XLL53V622.080000I from Renesas Electronics Corporation meets all mandatory matching parameters while offering enhanced specifications in certain areas.

Parameter Comparison

Engineering Selection Recommendations

The XLL53V622.080000I is a direct functional substitute for the CFSV7 based on matching all mandatory electrical and mechanical parameters. Selection should be based on the following engineering considerations:

Product Status: The CFSV7 is obsolete, while the XLL53V622.080000I is in active production status. For new designs or long-term system support, the Renesas part ensures continued availability and supply chain stability.

Compliance & Certifications: Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The XLL53V622.080000I carries RoHS3 compliance certification, providing additional environmental regulatory alignment for modern manufacturing standards.

Physical Considerations: The XLL53V622.080000I is physically smaller (5.15mm x 3.35mm vs. 7.00mm x 5.00mm) and has a lower profile (1.40mm vs. 2.00mm). PCB layout verification is required to confirm that the smaller footprint does not create design conflicts, though the 6-SMD, No Lead package standardization typically ensures compatibility.

Electrical Performance: The substitute part offers an extended operating temperature range (-40°C to 85°C vs. -10°C to 85°C) and higher maximum supply current (100mA vs. 80mA), providing operational margin in demanding thermal or power-constrained environments.

Frequently Asked Questions (FAQ)

Q: Can the XLL53V622.080000I be used as a direct replacement for the CFSV7 on existing PCBs?

A: The XLL53V622.080000I is electrically compatible and functionally equivalent. However, physical dimensions differ: the substitute is smaller (5.15mm x 3.35mm vs. 7.00mm x 5.00mm). PCB layout review is necessary to confirm that the smaller footprint does not create placement conflicts or require design modifications. The 6-SMD, No Lead package standardization typically ensures mechanical compatibility.

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

A: Frequency (622.08 MHz), output type (LVDS), supply voltage (3.3V), function (Enable/Disable), and package type (6-SMD, No Lead) must remain constant. These parameters define electrical interface compatibility and PCB integration requirements.

Q: Does the XLL53V622.080000I have the same frequency stability as the CFSV7?

A: The frequency stability specification for the XLL53V622.080000I is not provided in the available data. The CFSV7 specifies ±30ppm. Verify frequency stability requirements against application specifications before final selection.

Q: What is the difference between XO and VCXO oscillator types?

A: The CFSV7 is an XO (Standard) oscillator with fixed frequency output. The XLL53V622.080000I is a VCXO (Voltage Controlled Crystal Oscillator) with frequency adjustment capability via control voltage. Both operate at the same nominal frequency (622.08 MHz) and are compatible for applications not requiring frequency tuning.

Q: Are there any supply chain or availability advantages to using the XLL53V622.080000I?

A: Yes. The XLL53V622.080000I is in active production status with 804 units in stock, while the CFSV7 is obsolete with limited remaining inventory (1056 units). For new designs or long-term support, the active Renesas part ensures sustained availability.

Q: What is the Absolute Pull Range (APR) specification, and why does it differ between parts?

A: APR defines the frequency adjustment range available on VCXO parts. The CFSV7 (XO type) does not have an APR specification. The XLL53V622.080000I (VCXO type) specifies ±50ppm APR, indicating frequency tuning capability. This does not affect substitution compatibility for fixed-frequency applications.