PI6C4853111FAE Equivalent & Substitute Parts

Part Overview

The PI6C4853111FAE is a clock fanout buffer (distribution) multiplexer IC manufactured by Diodes Incorporated, designed for 2:10 signal distribution at 500 MHz. This device accepts multiple input signal types (CML, LVDS, LVPECL, SSTL) and outputs LVPECL signals in a 32-TQFP package. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI6C4853111FAE
Manufacturer	Diodes Incorporated
Type	Fanout Buffer (Distribution), Multiplexer
Ratio - Input:Output	2:10
Frequency - Max	500 MHz
Input Signal Types	CML, LVDS, LVPECL, SSTL
Output Signal Type	LVPECL
Voltage - Supply	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-TQFP
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the PI6C4853111FAE is determined by the following critical parameters:

Input:Output Ratio: Must be 2:10
Differential Input/Output: Must support Yes/Yes configuration
Package Type: 32-TQFP or 32-LQFP (mechanically compatible)
Operating Temperature Range: Must cover -40°C ~ 85°C minimum
Input Signal Compatibility: Must accept at least one of the original input types (CML, LVDS, LVPECL, SSTL)
Output Signal Type: LVPECL or ECL/PECL output capability
Supply Voltage: Must operate within or encompass the 3V ~ 3.6V range
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into two categories based on frequency capability and signal compatibility:

Category A - Higher Frequency Alternatives (1.1 GHz to 4.6 GHz): Parts with enhanced frequency performance suitable for applications requiring headroom beyond 500 MHz.

Category B - Manufacturer-Recommended Direct Replacement (2.5 GHz): The Renesas 853S111AYILF provides the closest functional match with active product status and superior frequency performance.

Parameter Comparison

Parameter	PI6C4853111FAE	853S111AYILF	CDCLVD110AVF	CDCLVD110AVFR	CDCLVP110MVFR	CDCLVP110VF	CDCLVP110VFR	CDCLVP111VF	CDCLVP111VFR
Manufacturer	Diodes Inc.	Renesas	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Ratio - Input:Output	2:10	2:10	2:10	2:10	2:10	2:10	2:10	2:10	2:10
Frequency - Max	500 MHz	2.5 GHz	1.1 GHz	1.1 GHz	4.6 GHz	4.6 GHz	4.6 GHz	4.6 GHz	4.6 GHz
Input Types	CML, LVDS, LVPECL, SSTL	CML, LVDS, LVPECL, SSTL	LVDS	LVDS	HSTL, LVPECL	HSTL, LVPECL	HSTL, LVPECL	CML, LVDS, LVPECL, SSTL	CML, LVDS, LVPECL, SSTL
Output Type	LVPECL	ECL, PECL	LVDS	LVDS	LVPECL	LVPECL	LVPECL	LVPECL	LVPECL
Voltage - Supply	3V ~ 3.6V	2.375V ~ 3.465V	2.375V ~ 2.625V	2.375V ~ 2.625V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V	2.375V ~ 3.8V
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	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	32-TQFP	32-LQFP	32-LQFP	32-LQFP	32-LQFP	32-LQFP	32-LQFP	32-LQFP	32-LQFP
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: 853S111AYILF (Renesas Electronics)

The 853S111AYILF is the manufacturer-recommended substitute. It maintains the 2:10 input:output ratio, supports identical input signal types (CML, LVDS, LVPECL, SSTL), and operates across the required temperature range. The part is in active production status with ROHS3 compliance. Supply voltage range (2.375V ~ 3.465V) encompasses the original 3V ~ 3.6V specification. Frequency capability of 2.5 GHz provides significant performance margin over the original 500 MHz specification.

Secondary Recommendations for Full-Range Input Compatibility:

CDCLVP111VF and CDCLVP111VFR (Texas Instruments) maintain complete input signal type compatibility (CML, LVDS, LVPECL, SSTL) with LVPECL output. Both are in active production with ROHS3 compliance and MSL rating of 1 (Unlimited). Operating temperature range matches the original specification. Frequency capability of 4.6 GHz provides substantial performance headroom.

Alternative for LVDS-Only Applications:

CDCLVD110AVF and CDCLVD110AVFR (Texas Instruments) are suitable only for designs using LVDS input signals. These parts feature MSL rating of 1 (Unlimited) and operate at 1.1 GHz. Supply voltage range is narrower (2.375V ~ 2.625V) and must be verified against system requirements.

High-Frequency Alternatives:

CDCLVP110MVFR, CDCLVP110VF, and CDCLVP110VFR (Texas Instruments) support HSTL and LVPECL inputs with LVPECL output at 4.6 GHz. These parts are suitable for applications requiring higher frequency performance but do not support CML or SSTL input types. MSL rating of 1 (Unlimited) indicates superior moisture resistance.

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the 853S111AYILF directly replace the PI6C4853111FAE without PCB modifications?

A: The 853S111AYILF uses a 32-LQFP package versus the original 32-TQFP package. Both are 7x7 mm footprints with identical pin counts and compatible pinouts for this device class. PCB footprint verification is required, but mechanical and electrical compatibility is maintained. Pin assignment must be confirmed against both datasheets.

Q: What is the difference between CDCLVP111VF and CDCLVP111VFR?

A: Both parts are functionally identical with the same electrical specifications. The primary difference is packaging: CDCLVP111VF is supplied in Tray packaging, while CDCLVP111VFR is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and volume handling.

Q: Why do some substitutes have narrower supply voltage ranges?

A: The CDCLVD110 series (2.375V ~ 2.625V) is optimized for LVDS-only applications with tighter voltage tolerance. The CDCLVP series (2.375V ~ 3.8V) supports broader input types and accommodates wider supply variations. System power supply specifications must be verified against the selected substitute.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All recommended substitutes carry ROHS3 compliance certification, meeting the same regulatory requirements as the original PI6C4853111FAE. REACH status is unaffected for all parts.

Q: What does MSL rating 1 (Unlimited) mean compared to MSL 3 (168 Hours)?

A: MSL (Moisture Sensitivity Level) indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture baking requirements. MSL 3 (168 Hours) requires moisture baking after 168 hours of exposure. Parts with MSL 1 offer greater handling flexibility in manufacturing environments.

Q: Can CDCLVD110 series parts be used if the system only requires LVDS signals?

A: Yes. If the application uses only LVDS input signals, CDCLVD110AVF or CDCLVD110AVFR are suitable substitutes. However, verify that the narrower supply voltage range (2.375V ~ 2.625V) is compatible with system power specifications. These parts operate at 1.1 GHz, which exceeds the original 500 MHz requirement.

Q: What is the inventory status of these substitutes?

A: All recommended substitutes are in active production with confirmed inventory availability. The 853S111AYILF has 1313 pieces in stock, CDCLVP111VFR has 6131 pieces, and CDCLVD110AVFR has 3554 pieces. Inventory levels support both prototype and production quantities.

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