CDCLVP111VF Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The CDCLVP111VF is a clock fanout buffer (distribution) and multiplexer IC manufactured by Texas Instruments, designed for high-speed clock distribution applications up to 4.6 GHz. This 2:10 differential clock buffer operates with supply voltages between 2.375V and 3.8V and is housed in a 32-LQFP surface mount package. The device accepts multiple input signal types (CML, LVDS, LVPECL, SSTL) and outputs LVPECL signals, making it suitable for precision timing applications in telecommunications, data center, and high-speed computing environments. The CDCLVP111VF maintains active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required for manufacturing processes, or when design flexibility allows for functionally compatible alternatives from different manufacturers.

Substiute Parts

CDCLVP111VF

Texas InstrumentsIn Stock: 1291CDCLVP111VF Datasheet

Current PartRFQ

M100LVEP111FATWG

onsemiIn Stock: 1476M100LVEP111FATWG Datasheet

DirectRFQ

MC100LVEP111FAG

onsemiIn Stock: 2675MC100LVEP111FAG Datasheet

DirectRFQ

MC100LVEP111FARG

onsemiIn Stock: 31267MC100LVEP111FARG Datasheet

DirectRFQ

SY100EP111UTG-TR

Microchip TechnologyIn Stock: 2446SY100EP111UTG-TR Datasheet

DirectRFQ

PI6C4911510FAIE

Diodes IncorporatedIn Stock: 1823PI6C4911510FAIE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDCLVP111VF are qualified based on the following critical parameters that determine functional compatibility:

Core Substitution Criteria:

• Ratio - Input:Output: 2:10 (mandatory match)
• Differential Input/Output: Yes/Yes (mandatory match)
• Operating Temperature Range: -40°C ~ 85°C (mandatory match)
• Voltage - Supply: 2.375V ~ 3.8V (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• Product Status: Active (mandatory match)
• RoHS Status: ROHS3 Compliant (mandatory match)

Allowable Variations:

• Frequency - Max: Substitute parts may operate at frequencies equal to or lower than the main part (4.6 GHz maximum). Lower frequency ratings are acceptable as they represent conservative operating margins.
• Package / Case: 32-LQFP and 32-TQFP are mechanically and electrically compatible within the 7x7mm footprint specification.
• Input Signal Types: Substitute parts must support at least one common input type with the main part. The CDCLVP111VF accepts CML, LVDS, LVPECL, and SSTL; substitute parts must support a subset of these or equivalent signal standards.
• Output Signal Type: Substitute parts must output LVPECL or equivalent signal standards (ECL, PECL).
• Moisture Sensitivity Level (MSL): Substitute parts may have equal or more stringent MSL ratings (lower MSL numbers indicate better moisture tolerance).

The following parts meet these substitution criteria and are qualified as direct equivalents or functional substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The onsemi MC100LVEP111FARG and MC100LVEP111FAG represent the closest functional equivalents to the CDCLVP111VF. Both devices maintain the 2:10 input:output ratio, identical supply voltage range (2.375V ~ 3.8V), and full operating temperature specification (-40°C ~ 85°C). The MC100LVEP111FARG in Tape & Reel packaging offers the highest inventory availability (31,195 units) and is suitable for high-volume manufacturing processes. The MC100LVEP111FAG in Tray packaging provides an alternative for lower-volume applications. Both are ROHS3 compliant and maintain active product status. The frequency specification of 3 GHz represents a conservative operating margin relative to the CDCLVP111VF's 4.6 GHz maximum, making these parts suitable for applications operating at or below 3 GHz.

Secondary Substitute (Package Compatibility):

The onsemi M100LVEP111FATWG in Tape & Reel packaging maintains identical electrical specifications to the MC100LVEP111FARG but is housed in a 32-LQFP package matching the CDCLVP111VF footprint exactly. This part is appropriate when PCB layout constraints require the original LQFP package format.

Alternative Substitute (Different Package Family):

The Microchip SY100EP111UTG-TR operates at 3 GHz maximum frequency and is housed in a 32-TQFP package. The TQFP package is mechanically compatible with LQFP within the 7x7mm footprint specification and is suitable for applications where package family flexibility is acceptable. This device maintains MSL 1 rating (unlimited moisture sensitivity) matching the CDCLVP111VF and is available in Tape & Reel format (2,389 units in stock).

Limited Substitute (Frequency Derating):

The Diodes Incorporated PI6C4911510FAIE operates at a maximum frequency of 1.5 GHz, representing a significant frequency derating from the CDCLVP111VF's 4.6 GHz specification. This part is suitable only for applications with clock frequencies at or below 1.5 GHz. The device accepts the same input signal types (CML, LVDS, LVPECL, SSTL) and outputs LVPECL, maintaining signal compatibility. However, the MSL 3 rating (168 hours) indicates more stringent moisture handling requirements compared to the CDCLVP111VF's MSL 1 rating. This part is appropriate only when frequency requirements are significantly lower than the main part's capability.

All substitute parts maintain ROHS3 compliance and active product status, meeting regulatory and supply chain continuity requirements.

Frequently Asked Questions (FAQ)

Q: Can the onsemi MC100LVEP111FARG be used as a direct replacement for the CDCLVP111VF?

A: Yes, the MC100LVEP111FARG is a direct functional substitute. Both devices maintain the 2:10 input:output ratio, identical supply voltage range (2.375V ~ 3.8V), full operating temperature specification (-40°C ~ 85°C), and ROHS3 compliance. The MC100LVEP111FARG operates at 3 GHz maximum frequency, which is lower than the CDCLVP111VF's 4.6 GHz specification but is suitable for applications operating at or below 3 GHz. Both are housed in 32-LQFP packages with identical 7x7mm footprints, ensuring PCB compatibility without layout modifications.

Q: What is the difference between the MC100LVEP111FARG and MC100LVEP111FAG?

A: Both parts are electrically identical with the same 2:10 ratio, 3 GHz frequency, and supply voltage specifications. The primary difference is packaging format: MC100LVEP111FARG is supplied in Tape & Reel (TR) format suitable for automated assembly processes, while MC100LVEP111FAG is supplied in Tray format suitable for manual handling or lower-volume applications. MC100LVEP111FARG has significantly higher inventory availability (31,195 units versus 2,615 units).

Q: Why does the Microchip SY100EP111UTG-TR use a 32-TQFP package instead of 32-LQFP?

A: The SY100EP111UTG-TR is housed in a 32-TQFP package rather than 32-LQFP, but both packages share the same 7x7mm footprint and are mechanically compatible on PCBs designed for either package family. TQFP (Thin Quad Flat Pack) and LQFP (Low-profile Quad Flat Pack) differ in lead thickness and profile but maintain identical pin pitch and placement. The SY100EP111UTG-TR is suitable for designs where TQFP package compatibility is acceptable.

Q: Is the Diodes PI6C4911510FAIE suitable for all applications using the CDCLVP111VF?

A: The PI6C4911510FAIE is suitable only for applications with clock frequencies at or below 1.5 GHz. This part operates at a maximum frequency of 1.5 GHz, significantly lower than the CDCLVP111VF's 4.6 GHz specification. The PI6C4911510FAIE accepts the same input signal types (CML, LVDS, LVPECL, SSTL) and outputs LVPECL, maintaining signal compatibility. However, the MSL 3 rating (168 hours) requires more stringent moisture handling compared to the CDCLVP111VF's MSL 1 rating. Use this part only when frequency requirements are confirmed to be 1.5 GHz or lower.

Q: What does MSL (Moisture Sensitivity Level) mean for component substitution?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be exposed to ambient moisture before soldering without degradation. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 2 (1 Year) requires soldering within one year of opening the package. MSL 3 (168 Hours) requires soldering within 168 hours of opening. When substituting parts, a lower MSL number (more stringent) can replace a higher MSL number (less stringent) without impact. The CDCLVP111VF's MSL 1 rating is the most forgiving; substitute parts with MSL 2 or MSL 3 require more careful moisture management during assembly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts (M100LVEP111FATWG, MC100LVEP111FAG, MC100LVEP111FARG, SY100EP111UTG-TR, and PI6C4911510FAIE) are ROHS3 compliant, matching the CDCLVP111VF's regulatory status. All parts maintain active product status, ensuring continued availability and supply chain support.

Q: What input and output signal types should I verify when selecting a substitute?

A: The CDCLVP111VF accepts multiple input signal types (CML, LVDS, LVPECL, SSTL) and outputs LVPECL. When selecting a substitute, verify that the substitute part supports at least one common input type with your application's signal source and that the output signal type is compatible with your downstream circuitry. For example, the MC100LVEP111FARG supports LVDS input and ECL/PECL output, which is compatible with LVPECL-based systems. The PI6C4911510FAIE supports the identical input types (CML, LVDS, LVPECL, SSTL) and LVPECL output, making it a direct signal-level match.