TLK105RHBR Equivalent & Substitute Parts

Part Overview

The TLK105RHBR is a half-duplex transceiver IC manufactured by Texas Instruments, designed for MII and RMII protocol applications. This device is classified as not for new designs, indicating it has reached end-of-life status. The 32-VQFN (5x5) package with exposed pad provides surface mount integration for legacy and maintenance applications. Identifying equivalent substitute parts is necessary for design continuity, inventory management, and system maintenance when original stock becomes unavailable.

Substiute Parts

TLK105RHBR

Texas InstrumentsIn Stock: 4435TLK105RHBR Datasheet

Current PartRFQ

DP83822IRHBR

Texas InstrumentsIn Stock: 35437DP83822IRHBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLK105RHBR is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 32-VQFN (5x5) exposed pad package to ensure PCB footprint and thermal management compatibility.

Protocol Support: The substitute must support MII and RMII interface protocols to maintain functional compatibility with existing system designs.

Electrical Specifications: Supply voltage range, operating temperature range, and driver/receiver configuration must be compatible with the original application requirements.

Manufacturing Standards: RoHS3 compliance and MSL rating must meet or exceed the original part specifications to ensure reliability and regulatory compliance.

The DP83822IRHBR qualifies as a substitute based on matching package geometry, protocol support, and compliance certifications, while offering active product status for continued availability.

Parameter Comparison

Engineering Selection Recommendations

The DP83822IRHBR is qualified as a direct substitute for the TLK105RHBR based on the following engineering criteria:

Package and Footprint Compatibility: Both devices use identical 32-VQFN (5x5) exposed pad packages, ensuring direct PCB compatibility without layout modifications.

Protocol Equivalence: Both parts support MII and RMII protocols, maintaining functional compatibility with existing system designs and firmware implementations.

Compliance and Certification: Both parts meet ROHS3 compliance requirements and share identical MSL ratings, ensuring equivalent reliability and regulatory standing.

Supply Voltage Consideration: The DP83822IRHBR supply voltage range (1.71V ~ 3.45V) encompasses the TLK105RHBR range (3V ~ 3.6V), providing broader operational flexibility while maintaining compatibility with existing 3.3V supply designs.

Product Status Advantage: The DP83822IRHBR maintains active product status, ensuring continued availability and manufacturing support, whereas the TLK105RHBR is designated not for new designs.

Frequently Asked Questions (FAQ)

Q: Can the DP83822IRHBR be used as a direct replacement for the TLK105RHBR in existing designs?

A: Yes. Both devices share identical package geometry (32-VQFN 5x5), support the same MII and RMII protocols, and meet equivalent compliance standards. The DP83822IRHBR supply voltage range is broader and encompasses the TLK105RHBR operating range, ensuring compatibility with existing 3.3V supply designs.

Q: What are the key parameters that determine substitution eligibility?

A: Package type, protocol support, supply voltage compatibility, operating temperature range, and compliance certifications are the primary parameters. Both the TLK105RHBR and DP83822IRHBR match on all critical parameters except product status and supply voltage range, with the DP83822IRHBR offering broader specifications.

Q: Why is the TLK105RHBR marked as 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. Existing inventory remains available for maintenance and legacy system support.

Q: Are there any thermal or PCB layout differences between these parts?

A: Both devices use the same 32-VQFN (5x5) exposed pad package, which provides identical thermal characteristics and PCB footprint requirements. No layout modifications are necessary for substitution.

Q: What compliance certifications apply to both parts?

A: Both the TLK105RHBR and DP83822IRHBR are ROHS3 compliant and carry MSL rating 2 (1 Year), meeting equivalent environmental and regulatory standards.