TUSB8044RGCR USB Hub Controller Equivalent & Substitute Parts

Part Overview

The TUSB8044RGCR is a USB 3.1 hub controller IC manufactured by Texas Instruments, designed for interface applications requiring I2C protocol support. This device is packaged in a 64-VQFN (9x9) configuration with exposed pad and operates across a supply voltage range of 1.1V and 3.3V. The part carries a "Not For New Designs" product status, which necessitates identification of functionally equivalent alternatives for ongoing production and new design implementations.

Substiute Parts

TUSB8044RGCR

Texas InstrumentsIn Stock: 2898TUSB8044RGCR Datasheet

Current PartRFQ

TUSB8044ARGCR

Texas InstrumentsIn Stock: 48458TUSB8044ARGCR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TUSB8044RGCR is determined by the following critical parameters:

• Manufacturer & Base Product Number: Both parts must originate from Texas Instruments and share the TUSB8044 base product designation
• Function & Protocol: Both must serve as USB Hub Controllers with USB 3.1 standards compliance
• Interface Compatibility: I2C interface support is mandatory; SMBus compatibility is acceptable as an extended interface capability
• Package Specification: Identical 64-VQFN (9x9) with exposed pad configuration is required for PCB layout compatibility
• Electrical Specifications: Supply voltage ranges and operating temperature must be compatible with the application circuit design
• Compliance & Certifications: RoHS3 compliance and MSL rating must be maintained

The TUSB8044ARGCR qualifies as a direct substitute based on these parameters. While it features an expanded supply voltage specification (0.99V ~ 1.26V, 3V ~ 3.6V) and includes SMBus interface capability in addition to I2C, it maintains identical package geometry, functional classification, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TUSB8044ARGCR is the qualified substitute for the TUSB8044RGCR based on the following engineering criteria:

Product Status Alignment: The TUSB8044ARGCR carries an "Active" product status designation, making it suitable for new design implementations and ongoing production. The TUSB8044RGCR's "Not For New Designs" status indicates end-of-life trajectory, necessitating migration to the active alternative.

Compliance & Certification Continuity: Both parts maintain identical RoHS3 compliance and MSL 3 (168 Hours) ratings, ensuring no degradation in supply chain handling requirements or environmental compliance posture.

Electrical Specification Enhancement: The TUSB8044ARGCR provides expanded supply voltage tolerance (0.99V ~ 1.26V, 3V ~ 3.6V) compared to the main part's discrete voltage levels (1.1V, 3.3V). This expanded range accommodates broader power supply design margins without requiring circuit modification.

Interface Capability Expansion: The addition of SMBus interface support to the existing I2C capability provides design flexibility for future protocol requirements while maintaining full backward compatibility with I2C-only implementations.

Package & Pinout Compatibility: Identical 64-VQFN (9x9) package geometry ensures direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the TUSB8044ARGCR be used as a direct replacement for the TUSB8044RGCR without PCB modifications?

A: Yes. Both parts share identical package geometry (64-VQFN 9x9 with exposed pad), pinout configuration, and functional classification as USB 3.1 hub controllers. No PCB layout changes are required for substitution.

Q: What is the significance of the "Not For New Designs" status on the TUSB8044RGCR?

A: This designation indicates the part is in end-of-life phase and Texas Instruments does not recommend its use in new product designs. The TUSB8044ARGCR, with "Active" status, is the recommended alternative for new implementations.

Q: Are there interface compatibility concerns between I2C-only and I2C/SMBus implementations?

A: No. SMBus is a superset protocol that maintains full backward compatibility with I2C. Designs using I2C protocol will operate identically with the TUSB8044ARGCR without firmware or software modifications.

Q: How do the supply voltage specifications differ between these parts?

A: The TUSB8044RGCR operates at discrete voltage levels (1.1V, 3.3V), while the TUSB8044ARGCR specifies continuous ranges (0.99V ~ 1.26V, 3V ~ 3.6V). The substitute part's expanded tolerance provides greater design margin and accommodates a wider range of power supply implementations.

Q: Are moisture sensitivity and handling requirements identical?

A: Yes. Both parts carry MSL 3 (168 Hours) rating, requiring identical storage, handling, and reflow procedures. No changes to supply chain management or assembly processes are necessary.

Q: What is the packaging difference between the two parts?

A: The TUSB8044RGCR is supplied in Tape & Reel (TR) format, while the TUSB8044ARGCR is available in Cut Tape (CT) and Digi-Reel® formats. This affects procurement and component feeder compatibility but does not impact electrical or functional performance.