ICS853111BYLF Equivalent & Substitute Parts

Part Overview

The ICS853111BYLF is a Clock Fanout Buffer (Distribution), Multiplexer IC manufactured by Renesas Electronics Corporation. This 2:10 differential clock buffer operates at a maximum frequency of 3 GHz and is housed in a 32-LQFP package. The device accepts multiple input signal types (CML, LVDS, LVPECL, SSTL) and outputs ECL and LVPECL signals, making it suitable for high-speed clock distribution applications.

The ICS853111BYLF is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this clock distribution architecture.

Key Parameters

Parameter	Value
Part Number	ICS853111BYLF
Manufacturer	Renesas Electronics Corporation
Type	Fanout Buffer (Distribution), Multiplexer
Ratio - Input:Output	2:10
Frequency - Max	3 GHz
Voltage - Supply	2.375V ~ 3.8V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-LQFP
Mounting Type	Surface Mount
Input Types	CML, LVDS, LVPECL, SSTL
Output Types	ECL, LVPECL
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the ICS853111BYLF is determined by the following critical parameters:

Mandatory Matching Parameters:

Ratio - Input:Output: 2:10
Package / Case: 32-LQFP or 32-TQFP (mechanically compatible)
Voltage - Supply: 2.375V ~ 3.8V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Differential Input and Output capability

Performance Parameters:

Frequency - Max: 3 GHz or higher
Input signal compatibility: Must support at least one input type from the original (CML, LVDS, LVPECL, SSTL)
Output signal compatibility: Must support ECL and/or LVPECL

Substitute parts are grouped into two categories based on package type and manufacturer:

Category 1: 32-LQFP Package (Texas Instruments CDCLVP Series)

CDCLVP110MVFR, CDCLVP110VF, CDCLVP110VFR, CDCLVP110VFRG4
CDCLVP111VF, CDCLVP111VFR

Category 2: 32-LQFP Package (onsemi 100LVEP Series)

MC100LVEP111FARG
M100LVEP111FATWG

Category 3: 32-TQFP Package (Microchip Technology 100EP Series)

SY100EP111UTG, SY100EP111UTG-TR

All listed substitutes maintain the 2:10 input-to-output ratio, support the required voltage supply range, and operate within the specified temperature range.

Parameter Comparison

Part Number	Manufacturer	Frequency - Max	Package	Input Types	Output Types	Voltage - Supply	Operating Temp	Product Status	RoHS Status
ICS853111BYLF	Renesas	3 GHz	32-LQFP	CML, LVDS, LVPECL, SSTL	ECL, LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Obsolete	REACH Unaffected
CDCLVP110MVFR	Texas Instruments	4.6 GHz	32-LQFP	HSTL, LVPECL	LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
CDCLVP110VF	Texas Instruments	4.6 GHz	32-LQFP	HSTL, LVPECL	LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
CDCLVP110VFR	Texas Instruments	4.6 GHz	32-LQFP	HSTL, LVPECL	LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
CDCLVP110VFRG4	Texas Instruments	4.6 GHz	32-LQFP	HSTL, LVPECL	LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Discontinued at DiGi Electronics	ROHS3 Compliant
CDCLVP111VF	Texas Instruments	4.6 GHz	32-LQFP	CML, LVDS, LVPECL, SSTL	LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
CDCLVP111VFR	Texas Instruments	4.6 GHz	32-LQFP	CML, LVDS, LVPECL, SSTL	LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
M100LVEP111FATWG	onsemi	3 GHz	32-LQFP	ECL, HSTL, PECL	ECL, PECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
MC100LVEP111FARG	onsemi	3 GHz	32-LQFP	ECL, HSTL, LVDS, PECL	ECL, PECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
SY100EP111UTG	Microchip Technology	3 GHz	32-TQFP	HSTL, LVECL, LVPECL	LVECL, LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant
SY100EP111UTG-TR	Microchip Technology	3 GHz	32-TQFP	HSTL, LVECL, LVPECL	LVECL, LVPECL	2.375V ~ 3.8V	-40°C ~ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

CDCLVP111VF and CDCLVP111VFR (Texas Instruments) are the most direct substitutes for the ICS853111BYLF. Both parts maintain identical input signal type support (CML, LVDS, LVPECL, SSTL), operate at 4.6 GHz (exceeding the original 3 GHz specification), and are housed in the 32-LQFP package. Both are Active products with ROHS3 compliance and lower moisture sensitivity levels (MSL 1) compared to the original part (MSL 3).

MC100LVEP111FARG (onsemi) provides an alternative with broad input compatibility (ECL, HSTL, LVDS, PECL) and operates at 3 GHz, matching the original frequency specification. This part is Active with ROHS3 compliance and extensive inventory availability (31,195 pcs).

Secondary Substitutes (Functional Equivalence with Package Consideration):

SY100EP111UTG and SY100EP111UTG-TR (Microchip Technology) are functionally equivalent but housed in a 32-TQFP package rather than 32-LQFP. Both are Active products with ROHS3 compliance and operate at 3 GHz. PCB layout modifications are required to accommodate the different package footprint.

Substitutes with Limited Input Compatibility:

CDCLVP110 series parts (CDCLVP110MVFR, CDCLVP110VF, CDCLVP110VFR) support only HSTL and LVPECL inputs, which is narrower than the original part's input range. These parts operate at 4.6 GHz and are Active with ROHS3 compliance. Selection of these parts requires confirmation that the system uses only HSTL or LVPECL input signals.

M100LVEP111FATWG (onsemi) supports ECL, HSTL, and PECL inputs but not LVDS or SSTL. This part operates at 3 GHz and is Active with ROHS3 compliance.

Avoid:

CDCLVP110VFRG4 is listed as discontinued at DiGi Electronics and should not be selected for new designs or ongoing production.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the ICS853111BYLF with CDCLVP111VFR without PCB modifications?

A: Yes. Both parts use the 32-LQFP package with identical pinout compatibility for the 2:10 fanout buffer function. No PCB layout changes are required. The CDCLVP111VFR operates at 4.6 GHz, exceeding the original 3 GHz specification, and supports the same input signal types (CML, LVDS, LVPECL, SSTL).

Q: What is the difference between CDCLVP110 and CDCLVP111 series parts?

A: The CDCLVP111 series supports a broader range of input signal types (CML, LVDS, LVPECL, SSTL) compared to the CDCLVP110 series (HSTL, LVPECL only). Both series operate at 4.6 GHz and are housed in 32-LQFP packages. Selection depends on the input signal types present in your system.

Q: Can I use SY100EP111UTG-TR as a substitute if my PCB is designed for 32-LQFP?

A: No. The SY100EP111UTG-TR uses a 32-TQFP package, which has a different footprint than the 32-LQFP package. PCB redesign is required to accommodate the different package dimensions and pin layout. Consult the package datasheets for specific footprint differences.

Q: Is MC100LVEP111FARG compatible with LVDS input signals?

A: Yes. The MC100LVEP111FARG supports ECL, HSTL, LVDS, and PECL input signals. It is a suitable substitute for applications requiring LVDS input compatibility.

Q: What is the moisture sensitivity level (MSL) difference between the original ICS853111BYLF and substitute parts?

A: The ICS853111BYLF has MSL 3 (168 hours), while most substitute parts have MSL 1 (unlimited) or MSL 2 (1 year). Lower MSL ratings indicate better moisture resistance and longer shelf life. This is an advantage for substitute parts in terms of storage and handling requirements.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The original ICS853111BYLF is listed as REACH Unaffected. All substitute parts maintain REACH Unaffected status, ensuring regulatory compliance for both environmental and hazardous substance restrictions.

Q: Which substitute part has the highest frequency rating?

A: The CDCLVP110 and CDCLVP111 series parts from Texas Instruments operate at 4.6 GHz, which is the highest frequency rating among all substitutes. This exceeds the original 3 GHz specification and provides additional performance headroom.

Q: Can I use M100LVEP111FATWG if my system requires SSTL input support?

A: No. The M100LVEP111FATWG supports only ECL, HSTL, and PECL input signals. It does not support SSTL inputs. If SSTL input compatibility is required, select CDCLVP111VF or CDCLVP111VFR instead.

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