High-performance 10BASE-T1S Ethernet PHY designed according to IEEE Std 802.3™-2022
• 10 Mbit/s over single balanced pair
• Half-duplex point-to-point link segments up to at least 15m

Reduced Media Independent Interface (RMII)

Carrier Sense Multiple Access / Collision Detection (CSMA/CD) media access control

Physical Layer Collision Avoidance (PLCA)
• Allows for high bandwidth utilization by avoiding collisions on the medium
• Burst mode for transmission of multiple packets for latency-sensitive applications
• Minimize latency for time-sensitive applications by assigning multiple PLCA IDs per node

Topology Discovery support (Revision D0)

Cable fault (open/short) diagnostics and Signal Quality Indication (SQI) support

Over-temperature and under-voltage detection

EtherGREEN™ Energy Efficiency
• Low power 10BASE-T1S PHY operation
• Ultra-low power sleep mode
• Wake up triggered by either MDI Wake-Up Tone (WUT) or local WAKE_IN, allowing OA TC10 compliant wake/sleep and partial networking (Revision D0)
• WAKE_OUT pulse assertion
• INH output for enable/disable of ECU supply

Application Controlled Media Access (ACMA) for implementation of collision-free Time-Division Multiple Access (TDMA) methods

IEEE Std 802.1AS™ / IEEE 1588™ application support
• Enables high-precision clock recovery with ultralow jitter for microcontrollers without Time-Sensitive Networking (TSN) support

Credit-based traffic shaping

Enhanced electromagnetic compatibility / electromagnetic interference (EMC/EMI) performance
• Low RF emissions
• Digital output drive strength adjust
• Simple low cost bus interface network

Single 3.3V supply with integrated 1.8V regulator

Small footprint 24-pin (4 x 4 mm) VQFN with wettable flanks

-40°C to +125°C extended temperature range

AEC-Q100 qualification

Functional Safety Support (ISO 26262, ASIL B)
• ISO 26262 compliant development
• Functional Safety Package, including Safety Manual, FMEDA, and Dependent Failure Analysis (DFA)

AUTOSAR MCAL evaluation package available
• Sample application available
• Easy to integrate into any host microcontroller’s AUTOSAR stack

The LAN8671 is a high-performance 10BASE-T1S single-pair Ethernet PHY transceiver for 10 Mbit/s halfduplex networking over a single pair of conductors. Utilizing standard Ethernet technology in sensor/actuator networks reduces application costs by eliminating gateways necessary with legacy networking technologies. The ability to connect multiple PHYs onto a common mixing segment further saves implementation costs by reducing cabling and switch ports. The LAN8671 is designed for use in high-reliability cost sensitive automotive, industrial, backplane, aerospace and defense, and building automation sensor/actuator applications.

Microchip's complimentary and confidential MicroCHECK design review service, which offers insight from the initial concept to the final PCB layout, is available to customers who are using our products in their projects. You can confidently submit your design materials in a secure and private setting, and our expert engineers will provide individualized feedback to enhance your design. MicroCHECK design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

The LAN8671 is designed to be used in ISO 26262 Functional Safety applications. A Functional Safety Package is available, including Safety Manual; Failure Modes, Effects, and Diagnostic Analysis (FMEDA); and Dependent Failure Analysis (DFA). For more information please contact Microchip Support or Sales.