TLK111PT Equivalent & Substitute Parts

Part Overview

The TLK111PT is a full-duplex Ethernet transceiver manufactured by Texas Instruments, housed in a 48-LQFP package. This component provides 1/1 driver/receiver configuration for Ethernet interface applications with supply voltage range of 1.8V to 3.3V and operating temperature range of -40°C to 85°C. The product is classified as "Not For New Designs," indicating it has been superseded and is no longer recommended for new development. Identifying suitable substitute components is necessary to ensure design continuity, maintain supply chain flexibility, and transition to actively supported alternatives.

Substiute Parts

TLK111PT

Texas InstrumentsIn Stock: 3030TLK111PT Datasheet

Current PartRFQ

DP83822IRHBT

Texas InstrumentsIn Stock: 3451DP83822IRHBT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLK111PT is determined by the following critical parameters:

• Protocol Compatibility: Both main and substitute parts must support Ethernet interface standards
• Electrical Specifications: Supply voltage range and operating temperature must be compatible with system requirements
• Mounting and Packaging: Surface mount technology is maintained; however, package form factor may differ (48-LQFP vs. 32-VQFN)
• Regulatory Compliance: RoHS3 compliance and REACH status must be maintained
• Product Status: Active product status is preferred for new designs and long-term availability

The DP83822IRHBT qualifies as a substitute based on Ethernet protocol support, compatible voltage supply range (1.71V ~ 3.45V encompasses the TLK111PT range), surface mount technology, and active product status. The primary design consideration is the package transition from 48-LQFP to 32-VQFN, which requires PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

The DP83822IRHBT is the designated substitute for the TLK111PT based on the following criteria:

• Product Status: The DP83822IRHBT maintains Active status, ensuring continued manufacturer support, availability, and long-term supply chain stability compared to the TLK111PT's "Not For New Designs" classification
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH Unaffected status, satisfying environmental and regulatory requirements
• Electrical Compatibility: The DP83822IRHBT supply voltage range (1.71V ~ 3.45V) is compatible with systems designed for the TLK111PT (1.8V ~ 3.3V)
• Interface Protocol: Both components support Ethernet protocol, maintaining functional compatibility at the system level

Design transition from TLK111PT to DP83822IRHBT requires PCB layout modification due to package form factor change from 48-LQFP to 32-VQFN. Pin-to-pin compatibility cannot be assumed and requires detailed datasheet review and schematic redesign.

Frequently Asked Questions (FAQ)

Q: Can the DP83822IRHBT be used as a direct pin-for-pin replacement for the TLK111PT?

A: No. The TLK111PT uses a 48-LQFP package while the DP83822IRHBT uses a 32-VQFN package. Pin count and pinout differ significantly. PCB layout and schematic modifications are required.

Q: What is the primary reason to substitute the TLK111PT?

A: The TLK111PT is classified as "Not For New Designs," indicating it has been superseded. The DP83822IRHBT is an Active product from the same manufacturer, providing continued support and availability.

Q: Are the supply voltage ranges compatible?

A: Yes. The DP83822IRHBT supply voltage range (1.71V ~ 3.45V) encompasses the TLK111PT range (1.8V ~ 3.3V), ensuring electrical compatibility in systems designed for the original component.

Q: Do both components meet the same regulatory standards?

A: Yes. Both the TLK111PT and DP83822IRHBT are ROHS3 compliant and REACH Unaffected, maintaining compliance with environmental and regulatory requirements.

Q: What design considerations are necessary when transitioning to the DP83822IRHBT?

A: Primary considerations include package footprint change from 48-LQFP (7x7) to 32-VQFN (5x5), requiring PCB redesign; pinout verification against datasheets; and interface configuration review for MII/RMII support in the target application.