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Overview
| Topology | LAN / POE |
| Input voltage | 3.3 V |
| IC revision | 1 |
Description
Two-Wire ETH 3 Click is a compact add-on board designed for single-pair Ethernet connectivity in industrial and embedded systems, providing 10BASE-T1S communication over a single balanced pair of conductors for long-reach and noise-resilient networking. The board is based on the LAN8651B1 single-port 10BASE-T1S MAC-PHY Ethernet controller with SPI interface from Microchip, developed in compliance with IEEE 802.3cg and OPEN Alliance TC-6 specifications. By integrating both MAC and PHY in a single low-power device, the LAN8651B1 allows low-cost MCUs to directly access 10BASE-T1S networks via a high-speed SPI interface, supporting 10Mbit/s half-duplex communication, cut-through data transfer for reduced latency, and industrial-grade EMC and EMI compliance. A key feature of this Click board is the inclusion of an industrially isolated output stage using a WE-STST signal transformer (74930030) from Würth Elektronik, ensuring high galvanic isolation, long-distance signal integrity, and PoE capability. This Click board is ideally suited for industrial automation, factory networking, building automation, and other applications requiring robust, long-reach Ethernet communication over single-pair cabling.
Features
Single-port 10BASE-T1S MAC-PHY Ethernet controller with SPI interface, compliance with IEEE 802.3cg-2019 and OPEN Alliance TC-6 specifications, integrated MAC and PHY enabling direct MCU connection, 10Mbit/s half-duplex communication over a single balanced pair, industrial-grade galvanic isolation using a WE-STST signal transformer, long-reach and noise-resistant signal transmission, and more
Typical applications
- Two-Wire communication
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Data rate | L(µH) | VT(V (RMS)) | n | PoE | Operating Temperature | L(mm) | W(mm) | H(mm) | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Channels | Polarity | VCh max.(V) | ICh Leak max.(µA) | VBR min.(V) | CCh typ.(pF) | IPeak(A) | VCh Clamp ESD typ.(V) | VESD Contact(kV) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-STST Super Tiny Signal Transformer | Data rate10/100/1GBase-T | Inductance350 µH | Insulation Test Voltage1500 V (RMS) | Turns Ratio1:1 | PoEPoE (up to 350 mA) | Operating Temperature -40 °C up to +105 °C | Length4.7 mm | Width3.22 mm | Height2.9 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | Operating Temperature -55 °C up to +125 °C | Length1.6 mm | Width0.8 mm | Height0.8 mm | Impedance @ 100 MHz300 Ω | Maximum Impedance1500 Ω | Maximum Impedance250 MHz | Rated Current 2750 mA | DC Resistance0.35 Ω | TypeHigh Speed | – | – | – | – | – | – | – | – | – | ||||
 | WE-TVS TVS Diode – Super Speed Series, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TVS TVS Diode – Super Speed Series | – | – | – | – | – | Operating Temperature -55 °C up to +85 °C | Length1.2 mm | Width1 mm | Height0.45 mm | – | – | – | – | – | – | Channels2 | PolarityUnidirectional | Channel Operating Voltage [max.]3.3 V | Channel (Reverse) Leakage Current [max.]0.5 µA | (Reverse) Breakdown Voltage [min.]4.5 V | (Channel) Input Capacitance [typ.]0.18 pF | (Reverse) Peak Pulse Current3 A | Channel ESD Clamping Voltage [typ.]13 V | ESD Contact Discharge Capability8 kV |