TLK110PT Equivalent & Substitute Parts

Part Overview

The TLK110PT is a full-duplex transceiver IC manufactured by Texas Instruments, designed for MII and RMII Ethernet interface applications. This component is housed in a 48-LQFP package and operates across a 3V to 3.6V supply voltage range. The TLK110PT carries a "Not For New Designs" product status, indicating that Texas Instruments has discontinued active development and support for this part. Finding equivalent or substitute components is necessary for ongoing production, maintenance, and new system designs that require comparable Ethernet transceiver functionality.

Substiute Parts

TLK110PT

Texas InstrumentsIn Stock: 1849TLK110PT Datasheet

Current PartRFQ

DP83822IRHBT

Texas InstrumentsIn Stock: 3451DP83822IRHBT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLK110PT is based on the following critical parameters that must align between the main part and substitute candidates:

Protocol Compatibility: Both the main part and substitute must support MII and RMII Ethernet interface protocols to ensure functional equivalence in system designs.

Transceiver Configuration: The substitute must maintain a 1/1 driver/receiver configuration and full-duplex operation to preserve signal integrity and communication capability.

Voltage Supply Range: The substitute's supply voltage specification must overlap with or encompass the 3V to 3.6V range of the TLK110PT to ensure compatibility with existing power delivery systems.

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

Surface Mount Capability: The substitute must be available in a surface mount package to align with modern PCB assembly processes and manufacturing standards.

Compliance Standards: Both parts must maintain ROHS3 compliance and REACH unaffected status to meet regulatory and environmental requirements.

The DP83822IRHBT qualifies as a substitute based on these parameters, though it operates in a different package form factor (32-VQFN versus 48-LQFP) and features an expanded voltage supply range.

Parameter Comparison

Engineering Selection Recommendations

The DP83822IRHBT is identified as the manufacturer-recommended substitute for the TLK110PT based on protocol compatibility and functional equivalence. The DP83822IRHBT carries an "Active" product status, indicating ongoing manufacturer support and availability, which addresses the obsolescence concern associated with the TLK110PT's "Not For New Designs" designation.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production environments. The DP83822IRHBT's expanded voltage supply range (1.71V to 3.45V) provides additional operational flexibility compared to the TLK110PT's 3V to 3.6V specification.

The primary design consideration is the package transition from 48-LQFP to 32-VQFN, which requires PCB layout modifications and updated footprint definitions. The DP83822IRHBT's smaller package footprint (5x5mm versus 7x7mm) may offer space advantages in compact designs. The moisture sensitivity level increases from MSL 1 to MSL 2, requiring adjusted storage and handling protocols with a one-year shelf life limitation.

Frequently Asked Questions (FAQ)

Q: Can the DP83822IRHBT directly replace the TLK110PT without PCB modifications?

A: No. The DP83822IRHBT uses a 32-VQFN package while the TLK110PT uses a 48-LQFP package. PCB layout changes, including footprint redesign and potential signal routing adjustments, are required. Pin-to-pin compatibility cannot be assumed.

Q: Are the MII and RMII protocol implementations identical between these parts?

A: Both parts support MII and RMII protocols. Functional equivalence is established through protocol support, though detailed register maps and timing specifications must be verified against individual datasheets for specific implementation requirements.

Q: What is the impact of the voltage supply range difference?

A: The DP83822IRHBT's wider voltage range (1.71V to 3.45V) encompasses the TLK110PT's 3V to 3.6V specification. Existing power delivery systems designed for the TLK110PT will operate within the DP83822IRHBT's acceptable range without modification.

Q: How does the moisture sensitivity level change affect handling?

A: The TLK110PT (MSL 1) has unlimited shelf life under controlled conditions. The DP83822IRHBT (MSL 2) requires storage at controlled humidity and temperature with a one-year maximum shelf life. Component storage, handling, and reflow processes must comply with MSL 2 requirements.

Q: Is the DP83822IRHBT suitable for new designs?

A: Yes. The DP83822IRHBT carries an "Active" product status with ongoing manufacturer support, making it appropriate for new product development and long-term production planning.