USB5906-I/KD Equivalent & Substitute Parts

Part Overview

The USB5906-I/KD is a USB Hub Controller IC manufactured by Microchip Technology, designed for USB 3.1 interface applications with I2C and SPI communication protocols. This component operates across a dual voltage supply range (1.2V and 3.3V) and is housed in a 100-VQFN package with exposed pad. The part is currently classified as obsolete, which necessitates identification of functionally compatible alternatives for ongoing design requirements and production continuity.

Substiute Parts

USB5906-I/KD

Microchip TechnologyIn Stock: 1007USB5906-I/KD Datasheet

Current PartRFQ

USB5906C-I/KD

Microchip TechnologyIn Stock: 1220USB5906C-I/KD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The USB5906C-I/KD qualifies as a direct substitute for the USB5906-I/KD based on the following alignment of critical parameters:

Mechanical Compatibility: Both parts share identical package specifications (100-VQFN with 12x12mm dimensions and exposed pad), ensuring PCB footprint compatibility without layout modifications.

Functional Compatibility: Both components serve the same hub controller function within the USB protocol family. The USB5906C-I/KD supports USB 2.0 and USB 3.1 standards, providing backward compatibility while maintaining USB 3.1 capability required by the original design.

Interface Compatibility: The USB5906C-I/KD maintains I2C and SPI interfaces present in the original part, with additional support for SMBus and UART. Existing I2C and SPI communication protocols remain fully compatible.

Electrical Compatibility: The USB5906C-I/KD operates within voltage ranges that encompass the original part's requirements (1.08V–1.32V and 3V–3.6V cover the 1.2V and 3.3V specifications). Operating temperature range remains identical (-40°C ~ 85°C).

Compliance Alignment: Both parts maintain ROHS3 compliance, identical MSL ratings, and equivalent regulatory classifications (REACH Unaffected, EAR99 ECCN).

Product Status Advantage: The USB5906C-I/KD is classified as Active, providing long-term availability and supply chain continuity compared to the obsolete status of the original part.

Parameter Comparison

Engineering Selection Recommendations

The USB5906C-I/KD is the qualified substitute for the USB5906-I/KD. Selection of this alternative is supported by:

Regulatory Compliance: Both parts maintain identical ROHS3 compliance status and REACH unaffected classification, ensuring no regulatory barriers to substitution in existing applications.

Supply Chain Continuity: The USB5906C-I/KD holds Active product status with confirmed inventory availability (1200 Pcs), whereas the original part is Obsolete. This substitution directly addresses supply chain risk and ensures long-term component availability.

Mechanical and Electrical Interchangeability: Identical package specifications and operating temperature ranges eliminate the need for PCB redesign or thermal management modifications. Voltage supply ranges of the substitute encompass original specifications.

Functional Enhancement: The USB5906C-I/KD provides expanded interface support (SMBus, UART) and dual USB standard support (USB 2.0, USB 3.1) while maintaining full backward compatibility with existing I2C and SPI implementations.

Frequently Asked Questions (FAQ)

Q: Can the USB5906C-I/KD be used as a direct replacement without PCB modifications?

A: Yes. Both parts use identical 100-VQFN (12x12mm) packages with exposed pads. No PCB layout changes are required for mechanical or electrical compatibility.

Q: Are the I2C and SPI interfaces fully compatible between the two parts?

A: Yes. The USB5906C-I/KD maintains I2C and SPI interface support identical to the original part. Existing firmware and communication protocols require no modification.

Q: What is the advantage of the USB5906C-I/KD over the original part?

A: The USB5906C-I/KD is classified as Active with confirmed supply availability, whereas the USB5906-I/KD is Obsolete. The substitute also provides expanded interface options (SMBus, UART) and dual USB standard support (USB 2.0 and USB 3.1).

Q: Do the voltage supply requirements differ between these parts?

A: The USB5906C-I/KD operates within voltage ranges (1.08V–1.32V and 3V–3.6V) that fully encompass the original part's specifications (1.2V and 3.3V). Existing power supply designs remain compatible.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical ROHS3 compliance, MSL ratings, REACH status, and ECCN classifications. No compliance-related barriers to substitution exist.

Q: What is the MSL rating and what does it mean for handling?

A: Both parts carry MSL 3 rating with a 168-hour floor life. This indicates standard moisture sensitivity precautions are required during storage and assembly, with no additional handling requirements beyond standard ESD protocols.