CDCLVP111RHBT Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The CDCLVP111RHBT is an active 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 supports multiple input standards including CML, LVDS, LVPECL, and SSTL, with LVPECL output. The device is housed in a 32-VFQFN Exposed Pad package and is currently in active production status with ROHS3 compliance.

Equivalent and substitute parts are identified when design requirements change, supply constraints occur, or when alternative manufacturers offer compatible solutions meeting the same electrical and mechanical specifications within defined tolerance ranges.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	CDCLVP111RHBT
Type	Fanout Buffer (Distribution), Multiplexer
Ratio - Input:Output	2:10
Frequency - Max	4.6 GHz
Voltage - Supply	2.375V ~ 3.8V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-VFQFN Exposed Pad
Mounting Type	Surface Mount
Input Standards	CML, LVDS, LVPECL, SSTL
Output Standard	LVPECL
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the CDCLVP111RHBT are classified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Input:Output Ratio (2:10 configuration)
Differential Input and Output capability (Yes/Yes)
Maximum Frequency (4.6 GHz or higher)
Supply Voltage Range (2.375V ~ 3.8V overlap)
Operating Temperature Range (-40°C ~ 85°C)
Package Type (32-pin VFQFN Exposed Pad or equivalent footprint)
Input/Output Signal Standards compatibility

Substitution Categories:

Parametric Equivalent (Same Base Product): CDCLVP111RHBR differs only in input ratio (1:10 vs 2:10) and packaging format (Cut Tape vs Tape & Reel), maintaining identical electrical specifications and package footprint.

Direct Manufacturer Equivalents (onsemi): MC100LVEP111MNG and MC100LVEP111MNRG maintain the 2:10 ratio and 32-VFQFN package with maximum frequency of 3 GHz (within acceptable range for most applications), with expanded input standard support (ECL, HSTL, LVDS, PECL) and improved moisture sensitivity rating.

MFR Recommended Alternatives: 853S111BKILF (Renesas) maintains 2:10 ratio and 32-VFQFN package but operates at 2.5 GHz maximum frequency. PI6C4911510FAIEX (Diodes Incorporated) maintains 2:10 ratio with 1.5 GHz maximum frequency and uses 32-TQFP package (different footprint).

Parameter Comparison

Parameter	CDCLVP111RHBT (Main)	CDCLVP111RHBR	MC100LVEP111MNG	MC100LVEP111MNRG	853S111BKILF	PI6C4911510FAIEX
Manufacturer	Texas Instruments	Texas Instruments	onsemi	onsemi	Renesas Electronics	Diodes Incorporated
Ratio - Input:Output	2:10	1:10	2:10	2:10	2:10	2:10
Frequency - Max	4.6 GHz	4.6 GHz	3 GHz	3 GHz	2.5 GHz	1.5 GHz
Voltage - Supply	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	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	-40°C ~ 85°C
Package / Case	32-VFQFN Exposed Pad	32-VFQFN Exposed Pad	32-VFQFN Exposed Pad	32-VFQFN Exposed Pad	32-VFQFN Exposed Pad	32-TQFP
Differential Input	Yes	Yes	Yes	Yes	Yes	Yes
Differential Output	Yes	Yes	Yes	Yes	Yes	Yes
Input Standards	CML, LVDS, LVPECL, SSTL	CML, LVDS, LVPECL, SSTL	ECL, HSTL, LVDS, PECL	ECL, HSTL, LVDS, PECL	LVDS, LVPECL, SSTL	CML, LVDS, LVPECL, SSTL
Output Standard	LVPECL	LVPECL	ECL, PECL	ECL, PECL	ECL, PECL	LVPECL
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active
Moisture Sensitivity Level	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

CDCLVP111RHBR (Texas Instruments): Direct parametric equivalent with identical electrical performance and package footprint. Differs only in input ratio (1:10 vs 2:10) and packaging format. Select when 1:10 distribution is functionally acceptable or when Cut Tape packaging is preferred. Maintains ROHS3 compliance and active product status.

MC100LVEP111MNG / MC100LVEP111MNRG (onsemi): Suitable for applications where maximum frequency requirement is 3 GHz or lower. Offers improved moisture sensitivity rating (MSL 1 vs MSL 2) and expanded input standard support. Both maintain 2:10 ratio, 32-VFQFN package, and ROHS3 compliance. MC100LVEP111MNRG is available in Tape & Reel packaging; MC100LVEP111MNG is available in Tube packaging.

853S111BKILF (Renesas Electronics): Applicable for applications with maximum frequency requirement of 2.5 GHz or lower. Maintains 2:10 ratio and 32-VFQFN package footprint with ROHS3 compliance. Note higher moisture sensitivity level (MSL 3) requires controlled storage conditions (168 hours at 60% RH, 30°C).

PI6C4911510FAIEX (Diodes Incorporated): Limited to applications with maximum frequency requirement of 1.5 GHz. Uses 32-TQFP package (7x7 mm) with different PCB footprint requiring layout redesign. Suitable only when frequency requirements are significantly reduced and PCB redesign is acceptable. Maintains ROHS3 compliance with MSL 3 moisture sensitivity.

All substitute parts maintain the required operating temperature range (-40°C ~ 85°C), supply voltage compatibility (with PI6C4911510FAIEX limited to 3.6V maximum), and active product status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can CDCLVP111RHBR be used as a direct replacement for CDCLVP111RHBT?

A: CDCLVP111RHBR is a parametric equivalent with identical electrical specifications and package footprint. The primary difference is the input ratio (1:10 vs 2:10). It can be used as a replacement only if your application requires 1:10 distribution or if the 2:10 configuration is not critical to system operation.

Q: What is the key difference between the Texas Instruments and onsemi options?

A: MC100LVEP111MNG and MC100LVEP111MNRG (onsemi) operate at 3 GHz maximum frequency compared to 4.6 GHz for the CDCLVP111RHBT. Both maintain the 2:10 ratio and 32-VFQFN package. The onsemi parts offer superior moisture sensitivity (MSL 1 vs MSL 2) and expanded input standard support (ECL, HSTL, LVDS, PECL vs CML, LVDS, LVPECL, SSTL).

Q: Is the Renesas 853S111BKILF suitable for high-speed applications?

A: The 853S111BKILF operates at 2.5 GHz maximum frequency, making it suitable only for applications where clock distribution frequencies do not exceed 2.5 GHz. It maintains the 2:10 ratio and 32-VFQFN package but has higher moisture sensitivity (MSL 3) requiring controlled storage.

Q: Why does the Diodes PI6C4911510FAIEX use a different package?

A: The PI6C4911510FAIEX uses a 32-TQFP package (7x7 mm) instead of the 32-VFQFN package (5x5 mm). This results in a different PCB footprint and requires layout redesign. This part is limited to 1.5 GHz maximum frequency and should only be considered when frequency requirements are significantly reduced.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant and maintain active product status, ensuring compliance with current environmental regulations and continued manufacturer support.

Q: What is the impact of moisture sensitivity level differences?

A: CDCLVP111RHBT has MSL 2 (1 Year shelf life at 30°C/60% RH). onsemi parts have MSL 1 (Unlimited shelf life). Renesas and Diodes parts have MSL 3 (168 hours at 30°C/60% RH), requiring more stringent moisture control during storage and handling to prevent solder joint degradation.

Q: Can I use these parts interchangeably in my design?

A: Interchangeability depends on your specific frequency requirements, input/output signal standards, and PCB layout constraints. Parts with identical package types (32-VFQFN) are pin-compatible. The PI6C4911510FAIEX (32-TQFP) requires PCB redesign. Verify that the maximum frequency of the substitute meets or exceeds your application requirements.

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