USB5926T-I/KD Equivalent & Substitute Parts

Part Overview

The USB5926T-I/KD is a USB Hub Controller manufactured by Microchip Technology, designed for USB 3.1 interface applications with I2C and SPI communication protocols. This component operates across a supply voltage range of 1.2V to 3.3V and is housed in a 100-VQFN (12x12) package with exposed pad. The product is currently classified as Obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

USB5926T-I/KD

Microchip TechnologyIn Stock: 845USB5926T-I/KD Datasheet

Current PartRFQ

USB5926CT-I/KD

Microchip TechnologyIn Stock: 4019USB5926CT-I/KD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The USB5926CT-I/KD qualifies as a direct substitute for the USB5926T-I/KD based on the following alignment of critical parameters:

Mechanical Compatibility: Both components share identical package specifications (100-VQFN 12x12 with exposed pad), enabling direct PCB footprint compatibility without layout modifications.

Functional Equivalence: Both devices perform USB Hub Controller functions and maintain the same base product number (USB5926), confirming functional parity within the product family.

Electrical Compatibility: The USB5926CT-I/KD supports USB 2.0 and USB 3.1 standards, encompassing the USB 3.1 requirement of the original part. Supply voltage ranges are compatible: the substitute accepts 1.08V–1.32V and 3V–3.6V, which overlap with the original part's 1.2V and 3.3V specifications.

Interface Compatibility: The substitute provides I2C, SMBus, SPI, and UART interfaces. The original part requires I2C and SPI; these are fully supported by the substitute.

Environmental & Compliance: Both components operate across -40°C to 85°C, maintain ROHS3 compliance, and share identical MSL ratings (3, 168 hours), ensuring equivalent reliability and regulatory standing.

Product Status Advantage: The USB5926CT-I/KD is classified as Active, providing assured long-term availability and supply chain stability compared to the Obsolete status of the original part.

Parameter Comparison

Engineering Selection Recommendations

The USB5926CT-I/KD is the appropriate substitute for the obsolete USB5926T-I/KD. Selection is justified on the following engineering grounds:

Regulatory Compliance: Both components maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent environmental and regulatory standing for production and field deployment.

Supply Chain Continuity: The substitute's Active product status provides assured availability and manufacturing support, eliminating obsolescence risk associated with the original part.

Functional Sufficiency: The substitute's expanded interface set (addition of SMBus and UART) and dual USB standard support (USB 2.0 and USB 3.1) provide functional superset coverage of the original part's requirements without introducing incompatibility.

Mechanical & Electrical Interchangeability: Identical package specifications and overlapping voltage ranges enable direct substitution without PCB redesign or power supply modifications.

Frequently Asked Questions (FAQ)

Q: Can the USB5926CT-I/KD be used as a direct replacement without PCB modifications?

A: Yes. Both components use the 100-VQFN (12x12) package with exposed pad, ensuring identical footprint compatibility. No PCB layout changes are required.

Q: Are the supply voltage ranges compatible between the original and substitute parts?

A: Yes. The substitute's voltage range (1.08V–1.32V and 3V–3.6V) encompasses the original part's specified voltages (1.2V and 3.3V), ensuring compatible power supply operation.

Q: Does the substitute support all interfaces required by the original design?

A: Yes. The original part requires I2C and SPI interfaces. The substitute provides both, plus additional SMBus and UART interfaces. Designs using only I2C and SPI will function without modification.

Q: What is the significance of the USB5926CT-I/KD being Active versus the original part being Obsolete?

A: Active status indicates current manufacturing and long-term availability assurance. Obsolete status indicates discontinued production and potential supply constraints. The substitute eliminates obsolescence risk for new designs and production continuity.

Q: Are there differences in thermal or environmental operating ranges?

A: No. Both components operate across -40°C to 85°C and maintain identical MSL ratings (3, 168 hours), ensuring equivalent thermal and moisture handling characteristics.

Q: What packaging formats are available for the substitute part?

A: The USB5926CT-I/KD is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Confirm packaging availability with your supplier for specific production requirements.