TLK111PTR Equivalent & Substitute Parts

Part Overview

The TLK111PTR is a full-duplex Ethernet transceiver manufactured by Texas Instruments, housed in a 48-LQFP package. This component is classified as a 1/1 transceiver with full Ethernet capability and operates across a supply voltage range of 1.8V to 3.3V. The product status is marked as "Not For New Designs," indicating that Texas Instruments no longer recommends this component for new development projects. Finding equivalent or substitute parts is necessary to support legacy systems, ensure supply chain continuity, or transition to actively supported alternatives.

Substiute Parts

TLK111PTR

Texas InstrumentsIn Stock: 2140TLK111PTR Datasheet

Current PartRFQ

DP83822IRHBR

Texas InstrumentsIn Stock: 35437DP83822IRHBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLK111PTR is determined by the following critical parameters:

• Protocol Compatibility: Both the main part and substitute must support Ethernet protocol
• Transceiver Configuration: Full-duplex Ethernet transceiver functionality
• Supply Voltage Range: Operating voltage must be compatible with system requirements (1.8V ~ 3.3V range or overlapping range)
• Mounting Type: Surface mount technology for PCB integration
• Compliance Standards: RoHS3 compliance and REACH unaffected status
• Package Compatibility: Physical package dimensions and pin count must accommodate board layout constraints

The DP83822IRHBR qualifies as a substitute based on shared Ethernet interface functionality, full-duplex operation capability, overlapping supply voltage specifications (1.71V ~ 3.45V), surface mount technology, and equivalent compliance certifications. However, the package format differs (32-VQFN versus 48-LQFP), requiring PCB redesign considerations.

Parameter Comparison

Engineering Selection Recommendations

The DP83822IRHBR is an active product from Texas Instruments with current manufacturing support, whereas the TLK111PTR is designated "Not For New Designs." Both components maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

Selection of the DP83822IRHBR as a substitute requires evaluation of the following factors:

• Package Transition: The shift from 48-LQFP to 32-VQFN represents a significant physical change requiring PCB layout modification and potential schematic redesign
• Pin Configuration: Pin count reduction from 48 to 32 necessitates functional mapping and signal routing verification
• Supply Voltage Overlap: The DP83822IRHBR supply range (1.71V ~ 3.45V) encompasses the TLK111PTR range (1.8V ~ 3.3V), ensuring voltage compatibility
• Moisture Sensitivity: The DP83822IRHBR has MSL 2 (1 Year) versus MSL 1 (Unlimited) for the TLK111PTR, affecting storage and handling procedures

For legacy system support where package constraints prohibit redesign, continued use of the TLK111PTR may be necessary despite its obsolescence status.

Frequently Asked Questions (FAQ)

Q: Can the DP83822IRHBR directly replace the TLK111PTR without PCB modification?

A: No. The DP83822IRHBR uses a 32-VQFN package compared to the TLK111PTR's 48-LQFP package. Direct pin-for-pin replacement is not possible. PCB redesign is required.

Q: Are the supply voltage ranges compatible?

A: Yes. The DP83822IRHBR supply range of 1.71V ~ 3.45V overlaps with and extends beyond the TLK111PTR range of 1.8V ~ 3.3V, ensuring compatibility with existing power supply designs.

Q: What is the significance of the product status difference?

A: The TLK111PTR is marked "Not For New Designs," indicating Texas Instruments has discontinued active development and support. The DP83822IRHBR is "Active," meaning it receives ongoing manufacturing support and is recommended for new applications.

Q: How does the package size reduction affect board design?

A: The 32-VQFN (5x5) package is significantly smaller than the 48-LQFP (7x7) package. This allows for reduced PCB footprint but requires complete layout redesign, including trace routing and component placement optimization.

Q: Are there compliance differences between these parts?

A: Both components are ROHS3 compliant and REACH unaffected. However, the DP83822IRHBR has MSL 2 (1 Year) moisture sensitivity versus MSL 1 (Unlimited) for the TLK111PTR, requiring stricter storage and handling controls.

Q: What interface protocols does the DP83822IRHBR support?

A: The DP83822IRHBR supports MII and RMII Ethernet interfaces, providing flexibility for various system architectures.