TLK105RHBT Equivalent & Substitute Parts

Part Overview

The TLK105RHBT is a half-duplex transceiver IC manufactured by Texas Instruments, designed for MII and RMII protocol applications. This component is classified as not for new designs, indicating it has reached end-of-life status. The need to identify equivalent and substitute parts arises from inventory constraints, obsolescence management, and the requirement to maintain system compatibility in legacy or ongoing production environments. Substitute parts must maintain functional equivalence across protocol support, electrical characteristics, and physical packaging specifications.

Substiute Parts

TLK105RHBT

Texas InstrumentsIn Stock: 1954TLK105RHBT Datasheet

Current PartRFQ

DP83822IRHBT

Texas InstrumentsIn Stock: 3451DP83822IRHBT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLK105RHBT is determined by the following critical parameters:

Protocol Compatibility: The substitute part must support both MII and RMII interface protocols to ensure functional equivalence in existing system designs.

Electrical Specifications: Supply voltage range must overlap or encompass the original specification (3V ~ 3.6V). The substitute DP83822IRHBT operates at 1.71V ~ 3.45V, which includes the required 3V ~ 3.6V operating window.

Package and Pinout: Both parts must use identical 32-VQFN (5x5) Exposed Pad packaging to ensure mechanical and electrical compatibility without PCB redesign.

Mounting Technology: Surface mount configuration must be maintained for assembly process compatibility.

Environmental and Compliance Standards: RoHS3 compliance and MSL rating of 2 (1 Year) ensure regulatory and manufacturing process alignment.

The DP83822IRHBT qualifies as a manufacturer-recommended substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The DP83822IRHBT is the manufacturer-recommended substitute for the TLK105RHBT. Selection of this substitute is supported by the following factors:

Protocol Equivalence: Both parts support MII and RMII protocols, ensuring functional compatibility in existing system architectures.

Electrical Compatibility: The DP83822IRHBT supply voltage range (1.71V ~ 3.45V) encompasses the TLK105RHBT operating range (3V ~ 3.6V), confirming electrical compatibility.

Physical Compatibility: Identical 32-VQFN (5x5) Exposed Pad packaging eliminates the need for PCB modifications or re-qualification of assembly processes.

Regulatory Compliance: Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring no degradation in manufacturing or environmental handling requirements.

Product Status Advantage: The DP83822IRHBT maintains active product status, providing extended availability and supply chain stability compared to the end-of-life TLK105RHBT.

Frequently Asked Questions (FAQ)

Q: Can the DP83822IRHBT be used as a direct replacement for the TLK105RHBT without PCB modifications?

A: Yes. Both parts use identical 32-VQFN (5x5) Exposed Pad packaging with the same pinout, eliminating the need for PCB redesign or layout changes.

Q: Are there any voltage compatibility concerns when substituting the DP83822IRHBT?

A: No. The DP83822IRHBT supply voltage range (1.71V ~ 3.45V) fully encompasses the TLK105RHBT operating range (3V ~ 3.6V), ensuring electrical compatibility.

Q: Do both parts support the same communication protocols?

A: Yes. Both the TLK105RHBT and DP83822IRHBT support MII and RMII protocols, maintaining functional equivalence in system designs.

Q: What is the significance of the TLK105RHBT being marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. The DP83822IRHBT, with active product status, is the recommended path forward for ongoing and future applications.

Q: Are there any differences in manufacturing compliance between these parts?

A: No. Both parts are ROHS3 compliant with identical MSL ratings of 2 (1 Year), ensuring equivalent handling and manufacturing requirements.

Q: Can the DP83822IRHBT be used in legacy systems currently using the TLK105RHBT?

A: Yes. The electrical, mechanical, and protocol specifications are compatible, making the DP83822IRHBT suitable for retrofit applications in existing systems.