CDCLVP111VFR Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The CDCLVP111VFR is a Clock Fanout Buffer (Distribution) Multiplexer IC manufactured by Texas Instruments, designed for high-speed clock distribution applications. This 2:10 differential clock buffer operates at frequencies up to 4.6 GHz and is housed in a 32-LQFP surface mount package. The device is currently in active production status with 6131 pieces in stock inventory.

Substitute parts are identified when design requirements necessitate alternative sourcing due to supply constraints, manufacturing discontinuation, or specific application compatibility needs. The following equivalent parts maintain the core functional specifications while offering alternative manufacturer options and packaging configurations.

Key Parameters

Parameter	Value
Manufacturer Part Number	CDCLVP111VFR
Manufacturer	Texas Instruments
Type	Fanout Buffer (Distribution), Multiplexer
Ratio - Input:Output	2:10
Differential - Input:Output	Yes/Yes
Input Signal Types	CML, LVDS, LVPECL, SSTL
Output Signal Type	LVPECL
Frequency - Max	4.6 GHz
Voltage - Supply	2.375V ~ 3.8V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-LQFP (7x7)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the CDCLVP111VFR is determined by the following critical parameters:

Core Functional Requirements:

Input:Output Ratio: 2:10 (mandatory match)
Differential Input and Output capability (mandatory match)
Supply Voltage Range: 2.375V ~ 3.8V (must be compatible)
Operating Temperature Range: -40°C ~ 85°C (must be compatible)
Mounting Type: Surface Mount (mandatory match)
RoHS3 Compliance (mandatory match)

Acceptable Variations:

Maximum Frequency: Substitute parts may operate at 3.0 GHz or higher (lower frequency acceptable for non-critical timing paths)
Package Type: 32-LQFP or 32-TQFP (both 7x7mm footprints, pin-compatible with layout verification)
Input Signal Type: Substitute must support at least one common input standard (CML, LVDS, LVPECL, SSTL, ECL, HSTL, LVECL)
Output Signal Type: Substitute must support LVPECL or ECL/PECL output standards
Moisture Sensitivity Level: MSL 1, 2, or 3 acceptable based on application requirements

The identified substitute parts meet these criteria and are qualified for direct replacement in clock distribution applications.

Parameter Comparison

Parameter	CDCLVP111VFR (TI)	M100LVEP111FATWG (onsemi)	MC100LVEP111FARG (onsemi)	SY100EP111UTG-TR (Microchip)	PI6C4911510FAIEX (Diodes)
Ratio - Input:Output	2:10	2:10	2:10	2:10	2:10
Differential - Input:Output	Yes/Yes	Yes/Yes	Yes/Yes	Yes/Yes	Yes/Yes
Frequency - Max	4.6 GHz	3.0 GHz	3.0 GHz	3.0 GHz	1.5 GHz
Voltage - Supply	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	32-LQFP (7x7)	32-LQFP (7x7)	32-LQFP (7x7)	32-TQFP (7x7)	32-TQFP (7x7)
Input Signal Types	CML, LVDS, LVPECL, SSTL	ECL, HSTL, PECL	ECL, HSTL, LVDS, PECL	HSTL, LVECL, LVPECL	CML, LVDS, LVPECL, SSTL
Output Signal Type	LVPECL	ECL, PECL	ECL, PECL	LVECL, LVPECL	LVPECL
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active
Inventory (Pcs)	6131	1400	31195	2389	2365

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

M100LVEP111FATWG and MC100LVEP111FARG (onsemi) are direct functional equivalents with identical 2:10 ratio, differential input/output capability, and 32-LQFP packaging. Both maintain the 2.375V ~ 3.8V supply voltage range and -40°C ~ 85°C operating temperature specification. The maximum frequency specification of 3.0 GHz is suitable for applications not requiring the full 4.6 GHz capability of the original part. Both parts are ROHS3 compliant and in active production. MC100LVEP111FARG offers significantly higher inventory availability (31195 pieces).

Secondary Substitute (Package Variant):

SY100EP111UTG-TR (Microchip Technology) maintains functional equivalence with identical 2:10 ratio and differential capability. The 32-TQFP package is mechanically compatible with the 32-LQFP footprint (both 7x7mm), requiring PCB layout verification. This part operates at 3.0 GHz maximum frequency and includes LVPECL output support. Moisture Sensitivity Level is MSL 1 (Unlimited), matching the original part specification.

Limited Substitute (Frequency Derating):

PI6C4911510FAIEX (Diodes Incorporated) is suitable only for applications where the maximum operating frequency does not exceed 1.5 GHz. This part maintains the 2:10 ratio, differential capability, and LVPECL output specification. The 32-TQFP package requires layout verification. Supply voltage range is 2.375V ~ 3.6V (0.2V lower maximum than the original part). This part is recommended only when frequency requirements are confirmed below 1.5 GHz.

Selection Criteria:

For direct replacement without design modification: Select M100LVEP111FATWG or MC100LVEP111FARG
For high-volume applications: MC100LVEP111FARG (31195 pieces available)
For package flexibility: SY100EP111UTG-TR (TQFP variant)
For frequency-limited applications only: PI6C4911510FAIEX

All substitute parts are ROHS3 compliant and in active production status.

Frequently Asked Questions (FAQ)

Q: Can M100LVEP111FATWG replace CDCLVP111VFR directly without PCB modifications?

A: Yes. Both parts use the 32-LQFP package with identical 7x7mm footprint and pin configuration. No PCB layout changes are required. Verify input signal compatibility with your system (M100LVEP111FATWG supports ECL, HSTL, PECL; CDCLVP111VFR supports CML, LVDS, LVPECL, SSTL).

Q: What is the frequency limitation when using PI6C4911510FAIEX?

A: PI6C4911510FAIEX operates at a maximum frequency of 1.5 GHz, compared to 4.6 GHz for the CDCLVP111VFR. This part is suitable only for clock distribution applications where the operating frequency does not exceed 1.5 GHz. Confirm your system frequency requirements before selection.

Q: Are there package differences between the substitute parts?

A: M100LVEP111FATWG and MC100LVEP111FARG use 32-LQFP packaging (identical to the original part). SY100EP111UTG-TR and PI6C4911510FAIEX use 32-TQFP packaging. Both package types are 7x7mm and mechanically compatible, but PCB layout and footprint verification is required when switching between LQFP and TQFP variants.

Q: Do all substitute parts support the same input signal standards?

A: No. Input signal support varies by manufacturer. CDCLVP111VFR and PI6C4911510FAIEX both support CML, LVDS, LVPECL, and SSTL. MC100LVEP111FARG supports ECL, HSTL, LVDS, and PECL. M100LVEP111FATWG supports ECL, HSTL, and PECL. SY100EP111UTG-TR supports HSTL, LVECL, and LVPECL. Verify your input signal type is supported by the selected substitute part.

Q: What is the supply voltage range for each substitute part?

A: M100LVEP111FATWG, MC100LVEP111FARG, and SY100EP111UTG-TR all support 2.375V ~ 3.8V, matching the original part. PI6C4911510FAIEX supports 2.375V ~ 3.6V (0.2V lower maximum). Confirm your power supply specification is compatible with the selected part.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts (M100LVEP111FATWG, MC100LVEP111FARG, SY100EP111UTG-TR, and PI6C4911510FAIEX) are ROHS3 compliant and suitable for applications with RoHS compliance requirements.

Q: Which substitute part has the best inventory availability?

A: MC100LVEP111FARG has the highest inventory availability with 31195 pieces in stock, compared to 6131 pieces for the original CDCLVP111VFR. This part is recommended for high-volume production requirements.

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