PI2PCIE2442ZHEX Equivalent & Substitute Parts

Part Overview

The PI2PCIE2442ZHEX is a PCI Express Switch IC manufactured by Diodes Incorporated, designed for 8-channel multiplexing/demultiplexing applications in PCIe environments. This component features an 8x2:4 switch configuration with a 42-TQFN surface mount package and operates across a supply voltage range of 1.5V to 1.8V with a -3dB bandwidth of 2.5GHz.

The PI2PCIE2442ZHEX is classified as obsolete. Identifying equivalent substitute parts is essential for ongoing system support, design updates, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

PI2PCIE2442ZHEX

Diodes IncorporatedIn Stock: 8442PI2PCIE2442ZHEX Datasheet

Current PartRFQ

PI3PCIE3442AZHEX

Diodes IncorporatedIn Stock: 1891PI3PCIE3442AZHEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI2PCIE2442ZHEX is determined by the following critical parameters:

• Package Compatibility: Both parts must use the 42-VFQFN Exposed Pad package with 42-TQFN (9x4.6) supplier device package to ensure PCB footprint and thermal compatibility.
• Interface Standard: Both parts must support PCI Express applications to maintain system-level functionality.
• Mounting Type: Surface mount configuration must be preserved.
• Channel Configuration: The 8-channel architecture with 2:4 multiplexer/demultiplexer circuit defines the functional requirement.
• Compliance Standards: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental requirements.

The PI3PCIE3442AZHEX meets these substitution criteria. While the supply voltage differs (3V ~ 3.6V versus 1.5V ~ 1.8V), this represents a voltage domain change rather than a functional incompatibility, as both parts operate within their respective specified ranges and maintain identical package geometry and channel architecture.

Parameter Comparison

Engineering Selection Recommendations

The PI3PCIE3442AZHEX is the manufacturer-recommended substitute for the obsolete PI2PCIE2442ZHEX. Selection of this substitute is supported by the following factors:

• Product Status: The PI3PCIE3442AZHEX maintains active product status, ensuring ongoing availability and manufacturer support.
• Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN and HTSUS classifications, satisfying regulatory and trade requirements.
• Package Geometry: Identical 42-VFQFN Exposed Pad package and 42-TQFN (9x4.6) supplier device package ensure direct PCB compatibility without layout modifications.
• Moisture Sensitivity: Both parts carry MSL 1 (Unlimited) rating, maintaining equivalent handling and storage requirements.
• Interface Continuity: Both parts support PCI Express applications, preserving system-level functionality.

The primary design consideration is the supply voltage difference. Systems currently operating the PI2PCIE2442ZHEX at 1.5V ~ 1.8V require power supply adjustment to the 3V ~ 3.6V range specified for the PI3PCIE3442AZHEX. This change must be evaluated within the context of the complete system power architecture.

Frequently Asked Questions (FAQ)

Q: Can the PI3PCIE3442AZHEX be used as a direct drop-in replacement for the PI2PCIE2442ZHEX?

A: The PI3PCIE3442AZHEX is mechanically and functionally compatible at the package level. However, the supply voltage requirement differs (3V ~ 3.6V versus 1.5V ~ 1.8V). Direct substitution requires system-level power supply modifications. PCB footprint compatibility is confirmed.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by package geometry (42-VFQFN Exposed Pad, 42-TQFN 9x4.6), mounting type (surface mount), interface standard (PCI Express), channel configuration (8-channel), and compliance certifications (RoHS3, REACH, MSL rating).

Q: Why does the PI3PCIE3442AZHEX have a different supply voltage?

A: The PI3PCIE3442AZHEX operates in a different voltage domain (3V ~ 3.6V) compared to the PI2PCIE2442ZHEX (1.5V ~ 1.8V). This reflects different design specifications within the Diodes Incorporated PCIe switch product family. Both parts maintain identical package geometry and channel architecture.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts maintain identical RoHS3 compliance status, REACH unaffected status, ECCN classification (EAR99), and HTSUS code (8542.39.0001). Regulatory requirements are equivalent.

Q: What is the significance of the PI2PCIE2442ZHEX being classified as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production and support for this part. The PI3PCIE3442AZHEX, with active product status, represents the current generation equivalent and ensures access to ongoing manufacturer support and availability.