PI3EQX8984ZLEX Equivalent & Substitute Parts

Part Overview

The PI3EQX8984ZLEX is an 8-channel PCIe buffer and ReDriver IC manufactured by Diodes Incorporated, designed for signal conditioning in PCI Express applications. This device features input equalization and output de-emphasis capabilities to maintain signal integrity across high-speed data paths. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

PI3EQX8984ZLEX

Diodes IncorporatedIn Stock: 1154PI3EQX8984ZLEX Datasheet

Current PartRFQ

PI3EQX8908AZFEX

Diodes IncorporatedIn Stock: 7602PI3EQX8908AZFEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI3EQX8984ZLEX is determined by the following critical parameters:

• Channel Configuration: 8-channel architecture required for PCIe signal conditioning
• Data Rate Capability: 8Gbps maximum data rate for PCIe compatibility
• Signal Conditioning Features: Input equalization and output de-emphasis functionality
• Supply Voltage Compatibility: Operating voltage range must accommodate system requirements
• Package Type: Surface mount with exposed pad configuration
• Functional Classification: Buffer and ReDriver IC category

The PI3EQX8908AZFEX qualifies as a manufacturer-recommended substitute based on matching channel count, data rate, signal conditioning capabilities, and functional classification within the ReDriver product family.

Parameter Comparison

Engineering Selection Recommendations

The PI3EQX8908AZFEX is the manufacturer-recommended substitute for the obsolete PI3EQX8984ZLEX. Both devices maintain identical functional specifications for 8-channel PCIe signal conditioning at 8Gbps data rates with equivalent signal conditioning architecture.

Key advantages of the PI3EQX8908AZFEX include active product status, ensuring continued availability and manufacturing support. The substitute offers improved moisture sensitivity characteristics (MSL 1 versus MSL 3), reducing handling and storage constraints. Supply voltage range expansion (3V to 3.6V versus fixed 3.3V) provides greater system integration flexibility.

Package differences exist between the two devices: the PI3EQX8984ZLEX uses a 72-TQFN (11x5) configuration, while the PI3EQX8908AZFEX employs a 54-TQFN (10x5.5) package. PCB layout modifications are required to accommodate the different pin count and physical dimensions. Both devices maintain ROHS3 compliance and equivalent electrical performance for PCIe applications.

Frequently Asked Questions (FAQ)

Q: Can the PI3EQX8908AZFEX directly replace the PI3EQX8984ZLEX without PCB modifications?

A: No. The substitute part uses a different package configuration (54-TQFN versus 72-TQFN) with reduced pin count and altered physical dimensions. PCB layout redesign is required, including footprint changes and signal routing adjustments.

Q: Are the electrical specifications identical between these two parts?

A: Core electrical specifications match: both devices provide 8-channel PCIe signal conditioning at 8Gbps with input equalization and output de-emphasis. Supply voltage range differs slightly; the substitute accepts 3V to 3.6V versus the original 3.3V specification.

Q: What is the significance of the MSL rating difference?

A: The PI3EQX8908AZFEX carries MSL 1 (unlimited moisture exposure) compared to MSL 3 (168-hour limit) for the PI3EQX8984ZLEX. This reduces moisture sensitivity handling requirements and extends shelf life without special storage conditions.

Q: Why is the PI3EQX8984ZLEX classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The PI3EQX8908AZFEX represents the active product line continuation within the ReDriver family, offering equivalent functionality with improved availability.

Q: Are both parts RoHS compliant?

A: Yes. Both the PI3EQX8984ZLEX and PI3EQX8908AZFEX maintain ROHS3 compliance, meeting environmental and regulatory requirements for electronic component manufacturing.