USB3311C-GJ-TR Equivalent & Substitute Parts

Part Overview

The USB3311C-GJ-TR is an active USB 2.0 transceiver manufactured by Microchip Technology, designed for flexible power management applications. This component operates across a wide supply voltage range of 1.6V to 3.6V and is housed in a compact 25-VFBGA (3x3) package. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and consumer applications requiring reliable USB interface functionality.

Substitute parts are identified when equivalent electrical performance can be maintained while accommodating different packaging requirements, supply voltage ranges, or inventory availability constraints.

Substiute Parts

USB3311C-GJ-TR

Microchip TechnologyIn Stock: 951USB3311C-GJ-TR Datasheet

Current PartRFQ

STOTG04EQTR

STMicroelectronicsIn Stock: 15644STOTG04EQTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the USB3311C-GJ-TR is determined by the following critical parameters:

Protocol Compatibility: The substitute part must support USB 2.0 protocol to maintain functional equivalence in data communication standards.

Electrical Performance: Supply voltage range must encompass or exceed the original specification. The USB3311C-GJ-TR operates at 1.6V to 3.6V; substitute parts with extended ranges (such as 1.6V to 5.5V) are acceptable as they maintain backward compatibility with the original voltage window.

Transceiver Type: The substitute must be a USB 2.0 transceiver with equivalent driver/receiver configuration to ensure signal integrity and interface compliance.

Operating Temperature Range: The substitute must support the full -40°C to 85°C operating window to maintain reliability across specified environmental conditions.

Surface Mount Capability: Both the original and substitute parts must be surface-mount components to ensure compatibility with standard PCB assembly processes.

Compliance Status: Both parts must maintain active product status and RoHS3 compliance to meet regulatory and supply chain requirements.

The STOTG04EQTR from STMicroelectronics meets these substitution criteria while offering a different package form factor (24-QFN-EP versus 25-VFBGA) and extended supply voltage range.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (USB3311C-GJ-TR): Use when the 25-VFBGA (3x3) package footprint is already integrated into the PCB design and MSL-1 moisture sensitivity is required for extended storage or high-humidity manufacturing environments.

Substitute Selection (STOTG04EQTR): Use when PCB redesign to accommodate a 24-QFN-EP (4x4) package is feasible and the application does not require unlimited moisture sensitivity. The extended supply voltage range (1.6V to 5.5V) provides additional design flexibility for systems with variable power rails. Both parts maintain active production status and full RoHS3 compliance, ensuring long-term supply chain stability and regulatory conformance.

Frequently Asked Questions (FAQ)

Q: Can STOTG04EQTR directly replace USB3311C-GJ-TR without PCB modification?

A: No. The package form factors differ significantly: USB3311C-GJ-TR uses 25-VFBGA (3x3) while STOTG04EQTR uses 24-QFN-EP (4x4). PCB footprint redesign is required. Pin-to-pin compatibility cannot be assumed without detailed datasheet cross-reference.

Q: What is the impact of the different Moisture Sensitivity Levels?

A: USB3311C-GJ-TR has MSL-1 (unlimited shelf life), while STOTG04EQTR has MSL-3 (168-hour limit after moisture exposure). For applications with extended storage periods or high-humidity manufacturing environments, the MSL-1 rating of the original part provides superior reliability margins.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts operate across -40°C to 85°C, ensuring equivalent thermal performance in industrial and commercial applications.

Q: Does the extended voltage range of STOTG04EQTR affect compatibility?

A: No. The STOTG04EQTR supply range of 1.6V to 5.5V fully encompasses the USB3311C-GJ-TR specification of 1.6V to 3.6V. The substitute part maintains backward compatibility with the original voltage window while offering extended operational flexibility.

Q: Are both parts RoHS3 compliant?

A: Yes. Both USB3311C-GJ-TR and STOTG04EQTR are ROHS3 compliant and maintain active product status, ensuring regulatory conformance and supply chain continuity.