PI2EQX5804CNJEX Equivalent & Substitute Parts

Part Overview

The PI2EQX5804CNJEX is a 4-channel PCIe ReDriver buffer manufactured by Diodes Incorporated, designed for signal conditioning in high-speed interface applications. This device operates at 5Gbps with integrated input equalization and output de-emphasis capabilities. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI2EQX5804CNJEX
Manufacturer	Diodes Incorporated
Product Category	Interface - Buffer, ReDriver
Applications	PCIe
Data Rate (Max)	5Gbps
Number of Channels	4
Package Type	100-LBGA (11x11)
Signal Conditioning	Input Equalization, Output De-Emphasis
Voltage Supply	1.2V
Operating Temperature	0°C ~ 70°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PI2EQX5804CNJEX is determined by the following critical parameters:

Application Compatibility: PCIe interface support
Channel Configuration: 4-channel architecture
Data Rate: Minimum 5Gbps capability
Signal Conditioning: Input equalization and output de-emphasis functionality
Compliance: ROHS3 compliance and EAR99/5A991B1 export classification
Thermal Range: Operating temperature range suitable for target application

The substitute parts identified are primarily Texas Instruments ReDriver devices from the DS100BR410, DS125BR401, DS64BR401, and SN65LVPE504 series. These devices maintain functional equivalence through matching channel count, signal conditioning architecture, and interface protocol support. Substitutes are grouped by application scope (PCIe-only versus multi-protocol support) and performance tier (data rate capability).

Parameter Comparison

Parameter	PI2EQX5804CNJEX	DS100BR410SQ/NOPB	DS125BR401SQE/NOPB	DS64BR401SQE/NOPB	SN65LVPE504RUAR
Manufacturer	Diodes Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active
Type	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver
Applications	PCIe	SATA	PCIe, SAS, SATA	SAS, SATA	PCIe
Input/Output	CML	CML	CML	CML	CML
Data Rate (Max)	5Gbps	10.3Gbps	12Gbps	6.4Gbps	5Gbps
Number of Channels	4	4	4	4	4
Delay Time	750ps	240ps	200ps	200ps	280ps
Signal Conditioning	Input Equalization, Output De-Emphasis	Input Equalization, Output De-Emphasis	Input Equalization, Output De-Emphasis	Input Equalization, Output De-Emphasis	Input Equalization, Output De-Emphasis
Voltage Supply	1.2V	2.375V ~ 2.625V	2.375V ~ 3.6V	2.375V ~ 2.625V	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-10°C ~ 85°C	-40°C ~ 85°C
Package Type	100-LBGA (11x11)	48-WQFN (7x7)	54-WQFN (10x5.5)	54-WQFN (10x5.5)	42-WQFN (4.6x9)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	2 (1 Year)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Primary PCIe Substitute: SN65LVPE504RUAR is the most direct functional equivalent for PCIe applications. It maintains the 5Gbps data rate specification, 4-channel configuration, and PCIe protocol support. This device is active in production with ROHS3 compliance and EAR99 export classification matching the original part. The 42-WQFN package requires PCB layout redesign but offers superior thermal performance and lower supply voltage range (3V ~ 3.6V).

Multi-Protocol Alternative: DS125BR401SQE/NOPB provides enhanced performance with 12Gbps capability and multi-protocol support (PCIe, SAS, SATA). This device is suitable for applications requiring future protocol flexibility. The 54-WQFN package and expanded operating temperature range (-40°C ~ 85°C) support broader deployment scenarios. MSL rating of 2 (1 Year) provides improved moisture handling compared to the original specification.

Performance-Matched Substitute: DS64BR401SQE/NOPB offers 6.4Gbps capability with SAS/SATA focus but maintains PCIe compatibility through CML interface architecture. This device bridges performance between the original 5Gbps specification and higher-speed alternatives.

All recommended substitutes maintain ROHS3 compliance and are currently in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can DS100BR410SQ/NOPB replace PI2EQX5804CNJEX in PCIe applications?

A: DS100BR410SQ/NOPB is primarily specified for SATA applications and lacks explicit PCIe protocol designation. While the 4-channel CML architecture and 10.3Gbps capability exceed the original 5Gbps requirement, protocol-specific signal conditioning may differ. SN65LVPE504RUAR or DS125BR401SQE/NOPB are preferred for PCIe implementations.

Q: What are the package compatibility implications?

A: The original PI2EQX5804CNJEX uses 100-LBGA (11x11) packaging. All identified substitutes employ WQFN packages (42-WQFN, 48-WQFN, or 54-WQFN), requiring complete PCB layout redesign including trace routing, via placement, and thermal management. Pin-to-pin compatibility does not exist; functional equivalence is based on electrical specifications only.

Q: Does supply voltage difference affect substitution?

A: Yes. The original part operates at 1.2V, while substitutes require 2.375V minimum (DS100BR410, DS64BR401) or 3V minimum (SN65LVPE504RUAR). Power supply architecture redesign is mandatory. DS125BR401SQE/NOPB offers the widest voltage range (2.375V ~ 3.6V), providing greater design flexibility.

Q: Are all substitutes ROHS3 compliant?

A: All identified substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's environmental certifications.

Q: What is the significance of delay time differences?

A: The original PI2EQX5804CNJEX specifies 750ps delay time, while substitutes range from 200ps to 280ps. Lower delay times improve signal integrity and reduce jitter. This represents a performance improvement for PCIe signal conditioning, though system-level timing analysis is required to confirm compatibility with existing receiver specifications.

Q: Which substitute offers the best thermal performance?

A: DS125BR401SQE/NOPB and DS64BR401SQE/NOPB feature MSL rating of 2 (1 Year) compared to the original MSL 3 (168 Hours), indicating superior moisture resistance. Operating temperature range of -40°C ~ 85°C (versus 0°C ~ 70°C original) supports extended thermal environments.

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