The LAN8672 is a high-performance 10BASE-T1S single-pair Ethernet PHY transceiver for 10 Mbit/s half-duplex 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 LAN8672 is designed for use in high-reliability cost sensitive automotive, industrial, backplane, 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 LAN8672 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.

High-performance 10BASE-T1S Ethernet PHY designed according to IEEE Std 802.3cg™-2019
• 10 Mbit/s over single balanced pair
• Half-duplex point-to-point link segments up to at least 15m
• Half-duplex point-to-point link segments up to at least 15m

Media Independent Interface (MII)

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

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

EtherGREEN™ Energy Efficiency
• Low power 10BASE-T1S PHY operation
• Ultra-low power sleep mode
• Wake up triggered by either MDI activity or local WAKE_IN
• WAKE_OUT pulse assertion
• INH output for enable/disable of ECU supply

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

Over-temperature and under-voltage detection

Enhanced electromagnetic compatibility / electromagnetic interference (EMC/EMI) performance
• Low RF emissions
• Digital output drive strength adjust
• Robust against injected currents and network cable shorts to ground or battery
• Simple low cost bus interface network

Single 3.3V supply with integrated 1.8V regulator

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

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

AEC-Q100 qualification

Functional Safety Support (ISO 26262)
• Functional Safety Manual
• FMEDA
• Dependent Failure Analysis (DFA)

AUTOSAR MCAL evaluation package available
• Developed as per AUTOSAR version R21-11
• Sample application available to assist configuration of peripherals
• Easy to integrate into any host microcontroller’s AUTOSAR stack