C3FSV7 Equivalent & Substitute Parts Reference

Part Overview

The C3FSV7 is a 311.04 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 C3FSV7 is currently classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

C3FSV7

Cardinal Components Inc.In Stock: 852C3FSV7 Datasheet

Current PartRFQ

XLP73V311.040000I

Renesas Electronics CorporationIn Stock: 683XLP73V311.040000I Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the C3FSV7 must satisfy the following critical parameters to ensure functional compatibility:

Mandatory Matching Parameters:

• Frequency: 311.04 MHz (exact match required)
• Voltage - Supply: 3.3V (exact match required)
• Function: Enable/Disable capability (required)
• Package / Case: 6-SMD, No Lead (exact match required)
• Mounting Type: Surface Mount (exact match required)

Allowable Variations:

• Output type: LVDS or LVPECL (both are compatible low-voltage differential signaling standards)
• Oscillator Type: XO (Standard) or VCXO (voltage-controlled) are functionally substitutable when frequency stability requirements permit
• Frequency Stability: Substitute parts may have different stability specifications if system requirements allow
• Operating Temperature Range: Substitute parts may have extended or different temperature ranges
• Current consumption: Substitute parts may have different supply current specifications if power budget permits
• Physical dimensions: Minor variations in length, width, and height are acceptable if PCB layout accommodates the footprint

The XLP73V311.040000I from Renesas Electronics Corporation qualifies as a substitute based on matching the mandatory parameters while offering enhanced specifications in frequency stability range and extended operating temperature.

Parameter Comparison

Engineering Selection Recommendations

The XLP73V311.040000I is a qualified substitute for the obsolete C3FSV7 based on the following engineering criteria:

Compliance and Availability: The XLP73V311.040000I carries Active product status from Renesas Electronics Corporation, ensuring long-term availability and supply chain continuity. The part is ROHS3 compliant, meeting current environmental and regulatory standards. Both parts maintain REACH Unaffected status and EAR99 ECCN classification.

Functional Compatibility: Both parts operate at identical frequency (311.04 MHz) and supply voltage (3.3V) with enable/disable functionality in matching 6-SMD, No Lead packages. The output standards (LVDS vs. LVPECL) are both low-voltage differential signaling technologies suitable for high-speed digital applications.

Performance Considerations: The XLP73V311.040000I offers extended operating temperature range (-40°C to 85°C versus -10°C to 85°C), providing broader environmental coverage. The VCXO type with ±50ppm pull range offers frequency adjustment capability not present in the standard XO design. Supply current increases from 80mA to 120mA, requiring verification against system power budgets.

Physical Integration: Dimensional variations are minor (7.50mm x 5.20mm versus 7.00mm x 5.00mm), with the substitute part being slightly smaller in height (1.40mm versus 2.00mm). PCB layout verification is required to confirm footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the XLP73V311.040000I directly replace the C3FSV7 without circuit modifications?

A: The XLP73V311.040000I is pin-compatible and functionally equivalent for the same frequency and supply voltage. However, output signal characteristics differ between LVDS and LVPECL standards. Circuit verification is necessary to confirm receiver compatibility with LVPECL output levels and impedance characteristics.

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

A: XO (Standard) oscillators operate at a fixed frequency determined by the crystal resonator. VCXO (Voltage-Controlled Crystal Oscillator) types allow frequency adjustment through a control voltage input, typically within the specified pull range (±50ppm for the XLP73V311.040000I). System design determines whether this capability is required or beneficial.

Q: Are LVDS and LVPECL outputs interchangeable?

A: Both LVDS and LVPECL are low-voltage differential signaling standards, but they differ in voltage levels and termination requirements. LVPECL typically operates at higher voltage swings than LVDS. Receiver circuits must be designed to accept the specific output standard. Direct substitution requires confirmation that receiving circuitry supports LVPECL input levels.

Q: Does the increased supply current (120mA vs. 80mA) affect system design?

A: The 40mA increase in maximum supply current must be evaluated against available power supply capacity and thermal management. System power budgets should be recalculated to ensure adequate current delivery and thermal dissipation capability.

Q: What does the extended operating temperature range (-40°C to 85°C) provide?

A: The XLP73V311.040000I supports operation at lower temperatures (-40°C) compared to the C3FSV7 (-10°C minimum). This extends applicability to industrial and military temperature environments. Upper temperature limits remain identical at 85°C.

Q: Are there any PCB layout considerations for the dimensional differences?

A: The XLP73V311.040000I is 0.50mm longer and 0.80mm wider than the C3FSV7, with reduced height. Existing PCB layouts designed for the C3FSV7 footprint require verification to confirm adequate clearance and component placement compatibility.

Q: What certifications and compliance standards apply to both parts?

A: Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The XLP73V311.040000I additionally carries ROHS3 compliance certification, meeting current environmental directives. MSL rating of 1 (Unlimited) applies to both, indicating no moisture sensitivity restrictions.