PI3USB32XAEX Equivalent & Substitute Parts

Part Overview

The PI3USB32XAEX is a USB Switch IC manufactured by Diodes Incorporated, designed for single-channel USB 2.0 switching applications. This component features a 1 Channel 2:1 multiplexer/demultiplexer configuration in an 8-TLLGA surface mount package. The part is currently classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

PI3USB32XAEX

Diodes IncorporatedIn Stock: 16109PI3USB32XAEX Datasheet

Current PartRFQ

PI3USB31ZUAEX

Diodes IncorporatedIn Stock: 4175PI3USB31ZUAEX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI3USB32XAEX is determined by the following critical parameters:

• USB interface compatibility (USB 2.0 bi-directional switching capability)
• Supply voltage range compatibility (3V ~ 4.3V minimum overlap requirement)
• Bandwidth performance (-3dB Bandwidth of 2.11 GHz)
• Operating temperature range (-40°C ~ 85°C)
• Surface mount packaging capability
• RoHS3 compliance and MSL rating

The PI3USB31ZUAEX qualifies as a substitute based on matching bandwidth specifications, overlapping supply voltage range (2.8V ~ 4.3V), identical operating temperature range, equivalent RoHS and MSL compliance, and surface mount configuration. While the substitute features 2 channels versus 1 channel in the original part, and employs a 1:1 SPST switch circuit versus the 2:1 multiplexer configuration, these represent functional enhancements suitable for USB switching applications.

Parameter Comparison

Engineering Selection Recommendations

The PI3USB31ZUAEX is suitable for applications currently using the obsolete PI3USB32XAEX. The substitute maintains identical bandwidth performance and operating temperature specifications, with a lower minimum supply voltage threshold (2.8V versus 3V). Both components carry ROHS3 compliance and MSL Level 1 ratings, ensuring equivalent environmental and regulatory standing.

The transition from a 1-channel 2:1 multiplexer to a 2-channel 1:1 SPST switch configuration represents a functional enhancement. Design integration requires verification that the increased channel count and alternative switching topology align with circuit requirements. The substitute's Active product status ensures long-term availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can PI3USB31ZUAEX directly replace PI3USB32XAEX without circuit modification?

A: The substitute shares critical electrical parameters including bandwidth, operating temperature, and supply voltage compatibility. However, the change from 1 channel to 2 channels and from 2:1 multiplexer to 1:1 SPST switch topology requires circuit-level evaluation to confirm functional equivalence for the specific application.

Q: What is the primary reason for substitution?

A: The PI3USB32XAEX is classified as Obsolete. The PI3USB31ZUAEX is an Active product from the same manufacturer, providing manufacturing continuity and long-term availability.

Q: Are there packaging differences between these parts?

A: Yes. The PI3USB32XAEX uses an 8-TLLGA (1.5x1.5) package, while the PI3USB31ZUAEX uses a 40-TQFN (4x6) package. Both are surface mount configurations. PCB layout and footprint redesign is required for substitution.

Q: Do both parts meet the same compliance standards?

A: Both components are ROHS3 compliant with MSL Level 1 ratings. REACH status is Unaffected for both parts, and both carry EAR99 ECCN classification.

Q: What is the supply voltage compatibility between these parts?

A: The PI3USB32XAEX operates at 3V ~ 4.3V, while the PI3USB31ZUAEX operates at 2.8V ~ 4.3V. The substitute accepts a lower minimum voltage, providing broader supply range compatibility.