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reference designLAN8651B1 | Demoboard Two-Wire ETH 3 Click

MikroE LAN8651B1 | Demoboard Two-Wire ETH 3 Click

LAN8651B1

Overview

TopologyLAN / POE
Input voltage3.3 V
IC revision1

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

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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)
Application
SamplesAvailability & Sample
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74930030
SPECWE-STST Super Tiny Signal Transformer, 10/100/1GBase-T, 350 µH

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

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Availability
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Downloads8 files

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
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ApplicationEthernet, PoE 
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742792640
SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
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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 
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824012823
SPECWE-TVS TVS Diode – Super Speed Series, –, –
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TVS TVS Diode – Super Speed Series
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Operating Temperature -55 °C up to +85 °C
Length1.2 mm
Width1 mm
Height0.45 mm
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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
ApplicationUSB 3.1 Gen1&2 (5Gb/s, 10Gb/s), USB 3.1 Type C, Display Port (1.1, 1.2, 1.3, 1.4), HDMI 2.0 
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