PI2EQX4402DNBE Equivalent & Substitute Parts

Part Overview

The PI2EQX4402DNBE is a 4-channel PCIe buffer and redriver IC manufactured by Diodes Incorporated, housed in an 84-LFBGA (9x9) package. This component operates at 2.5Gbps and provides input equalization and output de-emphasis signal conditioning for PCIe applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI2EQX4402DNBE
Manufacturer	Diodes Incorporated
Type	Buffer, ReDriver
Applications	PCIe
Number of Channels	4
Data Rate (Max)	2.5Gbps
Input/Output	CML
Signal Conditioning	Input Equalization, Output De-Emphasis
Voltage - Supply	1.7V ~ 1.9V
Operating Temperature	0°C ~ 70°C
Package / Case	84-LFBGA (9x9)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the PI2EQX4402DNBE is determined by the following critical parameters:

Application Compatibility: PCIe redriver functionality
Channel Count: 4 channels
Data Rate: Minimum 2.5Gbps (higher rates acceptable for backward compatibility)
Signal Conditioning: Input equalization and output de-emphasis required
Input/Output Interface: CML signaling
Mounting Type: Surface mount
Package Compatibility: Physical and electrical compatibility with 84-LFBGA footprint or equivalent

The substitute parts listed below meet these criteria with varying package configurations and enhanced performance specifications. All substitutes are active products from Texas Instruments, providing long-term availability and support compared to the obsolete Diodes Incorporated original.

Parameter Comparison

Parameter	PI2EQX4402DNBE	DS100BR410SQ/NOPB	DS100BR410SQE/NOPB	DS100BR410SQX/NOPB	DS125BR401ANJYR	DS125BR401ANJYT	DS125BR401SQ/NOPB	DS125BR401SQE/NOPB	DS64BR401SQ/NOPB	DS64BR401SQE/NOPB	SN65LVPE504RUAR
Manufacturer	Diodes Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver
Applications	PCIe	SATA	SATA	SATA	PCIe, SAS, SATA	PCIe, SAS, SATA	PCIe	PCIe, SAS, SATA	SAS, SATA	SAS, SATA	PCIe
Number of Channels	4	4	4	4	4	4	8	4	4	4	4
Data Rate (Max)	2.5Gbps	10.3Gbps	10.3Gbps	10.3Gbps	12Gbps	12Gbps	12.5Gbps	12Gbps	6.4Gbps	6.4Gbps	5Gbps
Input/Output	CML	CML	CML	CML	CML	CML	CML	CML	CML	CML	CML
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	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	Input Equalization, Output De-Emphasis
Voltage - Supply	1.7V ~ 1.9V	2.375V ~ 2.625V	2.375V ~ 2.625V	2.375V ~ 2.625V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 2.625V	2.375V ~ 2.625V	3V ~ 3.6V
Operating Temperature	0°C ~ 70°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	-10°C ~ 85°C	-10°C ~ 85°C	-40°C ~ 85°C
Package / Case	84-LFBGA (9x9)	48-WQFN (7x7)	48-WQFN (7x7)	48-WQFN (7x7)	54-WQFN (10x5.5)	54-WQFN (10x5.5)	54-WQFN (10x5.5)	54-WQFN (10x5.5)	54-WQFN (10x5.5)	54-WQFN (10x5.5)	42-WQFN (4.6x9)
Product Status	Obsolete	Active	Active	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	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Primary Substitutes for PCIe Applications:

DS125BR401SQE/NOPB and DS125BR401ANJYR are the preferred substitutes for PCIe-specific designs. Both are active products with 12Gbps data rate capability, exceeding the original 2.5Gbps specification. These parts support PCIe, SAS, and SATA applications with extended operating temperature range (-40°C to 85°C) and improved moisture sensitivity rating (MSL 2). The DS125BR401SQE/NOPB is available in Cut Tape & Digi-Reel packaging, while DS125BR401ANJYR offers the same specifications with alternative packaging.

Alternative for Multi-Protocol Support:

SN65LVPE504RUAR provides PCIe redriver functionality in a 42-WQFN package with 5Gbps data rate, suitable for legacy PCIe Gen 1 and Gen 2 applications. This part operates at 3V to 3.6V supply voltage and includes specified current consumption (174mA), offering a lower-complexity alternative for power-constrained designs.

For SAS/SATA Cross-Protocol Designs:

DS64BR401SQE/NOPB and DS64BR401SQ/NOPB deliver 6.4Gbps performance for SAS and SATA applications. Both are active products with MSL 2 rating and extended temperature range, suitable for enterprise storage environments.

All substitute parts are ROHS3 compliant and maintain CML input/output signaling with input equalization and output de-emphasis signal conditioning. Package changes from the original 84-LFBGA require PCB layout redesign.

Frequently Asked Questions (FAQ)

Q: Can DS125BR401SQE/NOPB directly replace PI2EQX4402DNBE without PCB modifications?

A: No. The original part uses 84-LFBGA (9x9) packaging, while DS125BR401SQE/NOPB uses 54-WQFN (10x5.5) packaging. PCB layout redesign is required, including trace routing, via placement, and decoupling capacitor positioning.

Q: What is the key difference between DS100BR410 variants (SQ, SQE, SQX)?

A: These variants differ in packaging format: SQ is Cut Tape (CT), SQE is Tape & Reel (TR), and SQX has unspecified packaging. All three share identical electrical specifications (10.3Gbps, 4 channels, SATA application). Selection depends on procurement and assembly requirements.

Q: Is SN65LVPE504RUAR suitable for PCIe Gen 3 applications?

A: SN65LVPE504RUAR operates at 5Gbps maximum data rate, supporting PCIe Gen 1 (2.5Gbps) and Gen 2 (5Gbps) specifications. It is not suitable for PCIe Gen 3 (8Gbps) or higher-speed applications.

Q: What is the impact of supply voltage differences between PI2EQX4402DNBE (1.7V-1.9V) and substitute parts?

A: The original part operates at lower voltage (1.7V-1.9V), while most substitutes require 2.375V minimum. Power supply redesign may be necessary. SN65LVPE504RUAR requires 3V-3.6V, requiring separate regulation if the original 1.7V-1.9V supply is retained.

Q: Why do DS125BR401SQ/NOPB specifications list 8 channels instead of 4?

A: DS125BR401SQ/NOPB is a distinct variant with 8-channel configuration and 12.5Gbps data rate, designed for higher-density PCIe applications. This part is not a direct substitute for the 4-channel PI2EQX4402DNBE.

Q: Are all substitute parts REACH compliant?

A: DS100BR410 variants are REACH Unaffected. DS125BR401 variants and DS64BR401 variants are REACH Unaffected. SN65LVPE504RUAR is REACH Unaffected. All parts maintain ROHS3 compliance.

Q: What is the moisture sensitivity impact when transitioning from MSL 3 to MSL 2?

A: MSL 2 (1 Year) provides extended shelf life and reduced bake-out requirements compared to MSL 3 (168 Hours). This improves supply chain flexibility and reduces manufacturing process constraints.

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