TUSB2551RGTR USB 2.0 Half Transceiver Equivalent & Substitute Parts

Part Overview

The TUSB2551RGTR is a USB 2.0 half transceiver interface IC manufactured by Texas Instruments, housed in a 16-VQFN (3x3) surface mount package. This device functions as a 1/3 transceiver with half-duplex operation, supporting 1.5 Mbps data rates across a supply voltage range of 1.65V to 3.6V. The part is currently classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production continuity.

Substiute Parts

TUSB2551RGTR

Texas InstrumentsIn Stock: 4002TUSB2551RGTR Datasheet

Current PartRFQ

TUSB2551ARGTR

Texas InstrumentsIn Stock: 2007TUSB2551ARGTR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TUSB2551RGTR is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: USB 2.0 half-duplex transceiver architecture
• Functional Configuration: 1/3 driver/receiver topology with 1.5 Mbps data rate
• Electrical Specifications: Receiver hysteresis of 200 mV and operating temperature range of -40°C to 85°C
• Physical Package: 16-VFQFN Exposed Pad surface mount configuration
• Regulatory Compliance: ROHS3 compliance and MSL Level 1 rating

The TUSB2551ARGTR qualifies as a direct substitute based on identical functional specifications, package geometry, and electrical performance characteristics. The primary distinction is product status and supply voltage specification range.

Parameter Comparison

Engineering Selection Recommendations

The TUSB2551ARGTR is the direct functional equivalent for TUSB2551RGTR replacement. Both devices maintain identical electrical performance, package geometry, and regulatory compliance status. The TUSB2551ARGTR carries active product status from Texas Instruments, ensuring continued availability and manufacturing support.

The primary consideration for selection is supply voltage specification. The TUSB2551RGTR operates across 1.65V to 3.6V, while the TUSB2551ARGTR is specified for 3.3V and 5V operation. Applications requiring operation below 3.3V must validate compatibility with the substitute part's electrical characteristics. For standard 3.3V and 5V system designs, the TUSB2551ARGTR provides equivalent performance with superior long-term availability.

Both parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, supporting deployment in standard manufacturing and storage environments without additional handling requirements.

Frequently Asked Questions (FAQ)

Q: Can TUSB2551ARGTR directly replace TUSB2551RGTR in existing designs?

A: Yes, for applications operating at 3.3V or 5V supply voltages. The devices are functionally identical in protocol, data rate, package configuration, and electrical performance. Designs requiring operation below 3.3V require voltage specification validation.

Q: What is the primary reason for substitution?

A: The TUSB2551RGTR is classified as obsolete. The TUSB2551ARGTR is an active product with ongoing manufacturing support from Texas Instruments, ensuring component availability for production and future orders.

Q: Are the packages physically identical?

A: Yes. Both parts use the 16-VFQFN Exposed Pad surface mount package with identical pin configuration and footprint geometry. PCB layout and assembly processes require no modification.

Q: What is the difference in packaging format?

A: The TUSB2551RGTR is supplied in bulk packaging, while the TUSB2551ARGTR is supplied in Tape & Reel (TR) format. This affects order quantities and automated assembly compatibility but does not impact electrical or functional performance.

Q: Are both parts RoHS compliant?

A: Yes. Both TUSB2551RGTR and TUSB2551ARGTR are ROHS3 compliant with MSL Level 1 moisture sensitivity rating, supporting standard manufacturing and storage environments.

Q: What supply voltage range should be used for the substitute part?

A: The TUSB2551ARGTR is specified for 3.3V and 5V operation. Designs using these standard logic supply voltages are fully compatible. Applications requiring the extended 1.65V to 3.6V range of the original part must evaluate the substitute's performance at lower voltages through Texas Instruments technical documentation.