PI2EQX5864CZFEX PCIe ReDriver Equivalent & Substitute Parts

Part Overview

The PI2EQX5864CZFEX is a 4-channel PCIe ReDriver manufactured by Diodes Incorporated, designed for signal conditioning in PCI Express applications. This part operates at 5Gbps with integrated input equalization and output de-emphasis capabilities. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI2EQX5864CZFEX
Manufacturer	Diodes Incorporated
Product Category	Interface - Buffer, ReDriver
Data Rate (Max)	5Gbps
Number of Channels	4
Package Type	56-WFQFN Exposed Pad (11x5)
Input/Output Signal Type	CML
Signal Conditioning	Input Equalization, Output De-Emphasis
Delay Time	750ps
Voltage - Supply	1.2V
Current - Supply	800mA
Operating Temperature	0°C ~ 70°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI2EQX5864CZFEX is determined by the following critical parameters:

Primary Substitution Criteria:

Input/Output signal type: CML
Signal conditioning capability: Input Equalization and Output De-Emphasis
Package type: Surface mount WFQFN with exposed pad
Applications: PCIe interface support
Compliance: ROHS3 and REACH requirements

Substitution Logic: The PI2EQX5864CZFEX operates as a 4-channel ReDriver at 5Gbps. Substitute parts identified in this reference are higher-performance alternatives from Texas Instruments that maintain CML signal conditioning and PCIe application support. These substitutes feature increased channel counts (8 channels), higher data rates (10.3Gbps to 12.5Gbps), and improved delay characteristics (80ps to 200ps versus 750ps). All substitutes maintain the same package family (54-WQFN exposed pad) and signal conditioning architecture, enabling functional replacement in PCIe ReDriver applications.

Parameter Comparison

Parameter	PI2EQX5864CZFEX	DS100KR401SQ/NOPB	DS100KR401SQE/NOPB	DS100KR800SQ/NOPB	DS100KR800SQE/NOPB	DS125BR800ANJYR	DS125BR800ANJYT	DS125BR800SQ/NOPB	DS125BR800SQE/NOPB	DS125BR820NJYR	DS125BR820NJYT
Manufacturer	Diodes Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Data Rate (Max)	5Gbps	10.3Gbps	10.3Gbps	10.3Gbps	10.3Gbps	12.5Gbps	12.5Gbps	12.5Gbps	12.5Gbps	12.5Gbps	12.5Gbps
Number of Channels	4	8	8	8	8	8	8	8	8	8	8
Delay Time	750ps	200ps	200ps	200ps	200ps	200ps	200ps	200ps	200ps	80ps	80ps
Input/Output	CML	CML	CML	CML	CML	CML	CML	CML	CML	CML	CML
Signal Conditioning	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE	Input EQ, Output DE
Package Type	56-WFQFN (11x5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)	54-WFQFN (10x5.5)
Voltage - Supply	1.2V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.375V ~ 3.6V	2.5V ~ 3.3V	2.5V ~ 3.3V
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	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
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
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
MSL Rating	1 (Unlimited)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

All identified substitute parts are active products from Texas Instruments with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The DS100KR series (DS100KR401SQ/NOPB, DS100KR401SQE/NOPB, DS100KR800SQ/NOPB, DS100KR800SQE/NOPB) provides 10.3Gbps performance with 200ps delay, suitable for PCIe applications requiring higher bandwidth than the original 5Gbps specification.

The DS125BR800 series (DS125BR800ANJYR, DS125BR800ANJYT, DS125BR800SQ/NOPB, DS125BR800SQE/NOPB) extends capability to 12.5Gbps and supports both PCIe and SAS applications, maintaining 200ps delay characteristics. The DS125BR820 series (DS125BR820NJYR, DS125BR820NJYT) offers the lowest delay time at 80ps with 12.5Gbps performance and expanded application support including SATA, with reduced supply current at 220mA.

Package differences exist: the original part uses 56-WFQFN (11x5), while all substitutes use 54-WFQFN (10x5.5). Supply voltage differs significantly: the original operates at 1.2V, while substitutes require 2.375V to 3.6V (DS100KR and DS125BR800 series) or 2.5V to 3.3V (DS125BR820 series). Operating temperature range expands from 0°C to 70°C to -40°C to 85°C across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can DS100KR401SQ/NOPB directly replace PI2EQX5864CZFEX? A: Functional substitution is possible due to matching CML signal conditioning and PCIe application support. However, package dimensions differ (54-WFQFN versus 56-WFQFN), requiring PCB layout modification. Supply voltage requirements differ (2.375V to 3.6V versus 1.2V), necessitating power supply redesign. The DS100KR401SQ/NOPB provides higher performance at 10.3Gbps versus 5Gbps.

Q: What is the difference between DS100KR401SQ/NOPB and DS100KR401SQE/NOPB? A: Both parts are functionally identical with matching electrical specifications. The primary difference is packaging: DS100KR401SQ/NOPB uses standard Tape & Reel (TR) packaging, while DS100KR401SQE/NOPB uses Cut Tape (CT) & Digi-Reel® packaging. Inventory levels differ (957 Pcs versus 1561 Pcs).

Q: Why do DS125BR800 and DS125BR820 series parts have different delay times? A: DS125BR800 series (DS125BR800ANJYR, DS125BR800ANJYT, DS125BR800SQ/NOPB, DS125BR800SQE/NOPB) operates with 200ps delay time. DS125BR820 series (DS125BR820NJYR, DS125BR820NJYT) achieves lower 80ps delay time with reduced supply current (220mA). The DS125BR820 series supports additional SATA applications and operates within a narrower supply voltage range (2.5V to 3.3V).

Q: Are all substitute parts ROHS3 compliant? A: Yes, all identified substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards equivalent to the original PI2EQX5864CZFEX.

Q: What packaging options are available for the DS125BR800 series? A: The DS125BR800 series is available in four part number variants: DS125BR800ANJYR and DS125BR800ANJYT use Tape & Reel (TR) packaging, while DS125BR800SQ/NOPB and DS125BR800SQE/NOPB also use Tape & Reel (TR) packaging with different inventory levels and ECCN classifications.

Q: How does the operating temperature range affect substitution? A: The original PI2EQX5864CZFEX operates from 0°C to 70°C. All substitute parts operate from -40°C to 85°C, providing extended temperature range capability suitable for industrial and automotive applications. This represents an improvement in environmental operating conditions.

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