LAN8670/1/2 Family of 10BASE-T1S PHY

Microchip Technology's LAN8670, LAN8671, and LAN8672 Ethernet physical layer (PHY) transceivers are high-performance, small-footprint devices enabling connections to standard systems of low-speed devices, including sensors and actuators that previously required their own communication systems. With the LAN8670, LAN8671, and LAN8672 devices, all Ethernet infrastructures in most OT and IT systems can be expanded to the edges of the network. These devices eliminate the need for gateways that, in the past, were needed to interconnect incompatible communication systems. The single pair of wires reduces cost, while the multidrop bus architecture reduces the need for expensive switches and enhances scalability. Several nodes can operate on the same bus line with high data throughput.

Features

• 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
• Half-duplex multidrop mixing segments
• Media independent interface (MII) and reduced media independent interface (RMII) with serial management interface (SMI) for rapid register access
• Carrier sense multiple access/collision detection (CSMA/CD) media access control
• Physical layer collision avoidance (PLCA)
• Burst mode for transmission of multiple packets for high packet rate latency-sensitive applications
• Enhanced electromagnetic compatibility/electromagnetic interference (EMC/EMI) performance
• Single 3.3 V supply
• -40°C to +125°C extended temperature range
• Microchip functional safety ready

Applications

• Factory automation networks: sensors and actuators
• Control cabinet wiring
• Building automation: temperature sensors, HVAC actuators, and elevators
• Process automation: sensors and actuators
• Computer backplanes: consolidation of multiple buses (I²C, CAN, RS-485, and others) into an Ethernet architecture