TMC8461-BA Equivalent & Substitute Parts

Part Overview

The TMC8461-BA is an Ethernet Controller with I2C, MII, and SPI interface capabilities, manufactured by Analog Devices Inc./Maxim Integrated. This device is classified as an Interface component and operates within the EtherCAT® series. The TMC8461-BA is currently marked as Obsolete, necessitating identification of functionally equivalent substitute components for ongoing design requirements and production continuity. The obsolescence status requires engineers to transition to active product alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

TMC8461-BA

Analog Devices Inc./Maxim IntegratedIn Stock: 1096TMC8461-BA Datasheet

Current PartRFQ

TMC8462A-BA

Analog Devices Inc.In Stock: 25021TMC8462A-BA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the TMC8461-BA are identified based on strict alignment with the following critical parameters:

Protocol Compatibility: The substitute must support Ethernet protocol and maintain the EtherCAT® series designation.

Functional Equivalence: The substitute must perform the Controller function with identical interface support (I2C, MII, SPI).

Electrical Specifications: The substitute must operate within compatible voltage supply ranges and temperature operating windows.

Package Compatibility: The substitute must be available in a Ball Grid Array (BGA) package format suitable for surface-mount applications.

Product Status: The substitute must be in Active status to ensure ongoing availability and manufacturer support.

The TMC8462A-BA meets all substitution criteria as an active product within the same EtherCAT® series, maintaining functional equivalence while providing enhanced supply voltage flexibility and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The TMC8462A-BA is the designated substitute for the obsolete TMC8461-BA based on functional and electrical equivalence within the EtherCAT® controller product line. Both components maintain identical protocol support, interface capabilities, and core voltage specifications within the 1.65V to 1.95V range.

The TMC8462A-BA provides extended supply voltage capability (4.75V ~ 34V) beyond the primary operating range, offering design flexibility for multi-voltage system architectures. The operating temperature range of the substitute (-40°C ~ 85°C) is suitable for standard industrial applications, though designs requiring operation above 85°C must evaluate thermal management strategies.

Package geometry differs between the main part (144-VFBGA, 10x10) and substitute (121-LFBGA, 9x9), requiring PCB layout redesign. Both packages maintain identical Moisture Sensitivity Level (MSL 3) specifications, ensuring equivalent handling and storage requirements.

The TMC8462A-BA holds Active product status with REACH compliance documentation and assigned ECCN/HTSUS classifications, supporting regulatory requirements and supply chain continuity. Inventory availability of 24,944 units ensures production support for volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the TMC8462A-BA directly replace the TMC8461-BA without PCB modifications?

A: No. While functionally equivalent, the package geometry differs (121-LFBGA 9x9 versus 144-VFBGA 10x10). PCB layout redesign is required to accommodate the different ball grid array dimensions and pin count.

Q: What is the primary reason for substitution?

A: The TMC8461-BA is classified as Obsolete. The TMC8462A-BA is the active equivalent product from Analog Devices Inc., ensuring continued manufacturer support and supply availability.

Q: Are the interface protocols identical between both parts?

A: Yes. Both components support I2C, MII, and SPI interfaces and operate as Ethernet Controllers within the EtherCAT® series.

Q: How do the voltage specifications compare?

A: Both parts operate within the 1.65V to 1.95V range. The TMC8462A-BA additionally supports 4.75V to 34V operation, providing extended voltage flexibility for systems requiring dual-voltage supply domains.

Q: What is the operating temperature difference?

A: The TMC8461-BA operates from -40°C to 125°C (TJ), while the TMC8462A-BA operates from -40°C to 85°C. Applications requiring operation above 85°C must implement thermal management or evaluate alternative solutions.

Q: Are moisture sensitivity requirements the same?

A: Yes. Both components are classified as MSL 3 (168 Hours), requiring identical handling, storage, and reflow procedures.

Q: What compliance certifications does the substitute carry?

A: The TMC8462A-BA is REACH Unaffected and assigned ECCN 3A991A2 and HTSUS 8542.31.0001 classifications for regulatory and trade compliance.