USB5742T/2G Equivalent & Substitute Parts

Part Overview

The USB5742T/2G is a USB Hub Controller manufactured by Microchip Technology, designed for USB 2-port hub applications with USB 3.1 support and SPI interface capability. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. The part is packaged in a 56-VQFN (7x7) configuration with exposed pad and maintains ROHS3 compliance and REACH unaffected status.

Substiute Parts

USB5742T/2G

Microchip TechnologyIn Stock: 1648USB5742T/2G Datasheet

Current PartRFQ

USB5742BT/2G

Microchip TechnologyIn Stock: 3969USB5742BT/2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the USB5742T/2G is determined by the following critical parameters:

Mechanical Compatibility: Package type (56-VFQFN Exposed Pad), pin count (56), and physical dimensions (7x7) must remain identical to ensure PCB footprint compatibility without redesign.

Functional Compatibility: The substitute must perform the hub controller function with USB protocol support and maintain SPI interface capability for host communication.

Electrical Compatibility: Supply voltage ranges and operating temperature specifications must be compatible with the application's power delivery and thermal environment.

Compliance & Certification: RoHS3 compliance and REACH unaffected status must be maintained for regulatory adherence.

The USB5742BT/2G meets all substitution criteria through identical packaging, equivalent hub controller functionality, compatible interface support (SPI present), and matching compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The USB5742BT/2G is the designated manufacturer-recommended substitute for the obsolete USB5742T/2G. Selection of this alternative is supported by:

Product Status: The substitute maintains active product status, ensuring continued availability and manufacturer support, whereas the main part is obsolete.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production.

Packaging & Pinout: Identical 56-VQFN (7x7) package configuration with exposed pad enables direct PCB footprint compatibility without layout modifications.

Functional Equivalence: Both components perform hub controller functions with USB protocol support and SPI interface capability. The substitute adds SMBus interface support, providing enhanced configuration flexibility without compromising existing SPI-based implementations.

Supply Voltage Compatibility: The substitute's supply voltage range (1.08V ~ 1.32V, 3V ~ 3.6V) encompasses the main part's specified voltages (1.2V, 3.3V), ensuring power delivery compatibility.

Frequently Asked Questions (FAQ)

Q: Can the USB5742BT/2G be used as a direct replacement for the USB5742T/2G without PCB modifications?

A: Yes. Both parts use identical 56-VQFN (7x7) packaging with exposed pad, ensuring pin-for-pin compatibility and identical footprints. No PCB layout changes are required.

Q: What is the primary reason for substitution?

A: The USB5742T/2G is classified as obsolete. The USB5742BT/2G is the active equivalent, ensuring long-term availability and manufacturer support for production and new designs.

Q: Are there differences in interface capabilities between the two parts?

A: The USB5742BT/2G includes both SMBus and SPI interfaces, while the USB5742T/2G supports SPI only. Existing SPI-based designs remain fully compatible. The additional SMBus interface provides optional configuration flexibility.

Q: Do the supply voltage specifications differ?

A: The USB5742BT/2G specifies a voltage range (1.08V ~ 1.32V, 3V ~ 3.6V) that encompasses the USB5742T/2G's specified voltages (1.2V, 3.3V). Applications using the original part's voltage levels remain compatible.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the USB5742T/2G and USB5742BT/2G maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements.

Q: What is the moisture sensitivity level for both parts?

A: Both parts are classified as MSL 3 with a 168-hour floor life, requiring identical handling and storage protocols during manufacturing and assembly.