Microchip LAN8670/1/2

The LAN8670 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 LAN8670 is designed for use in high-reliability cost sensitive automotive, industrial, backplane, and building automation sensor/actuator applications.

Key features

• Connects multiple PHYs onto a common mixing segment
• For use in high-reliability cost sensitive application
• Reduces application costs
• Designed to be used in ISO 26262 functional safety applications

Additional features

• High-performance 10BASE-T1S Ethernet PHY 
  • 10 Mbit/s over single balanced pair
  • Half-duplex multidrop mixing segments up to at least 25m with up to at least 8 PHYs
  • Half-duplex point-to-point link segments up to at least 15m
     
• Media Independent Interface (MII) and 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
     
• Application Controlled Media Access (ACMA) for implementation of collision-free Time-Division Multiple Access (TDMA) methods
• Enables high-precision clock recovery with ultralow jitter for microcontrollers without Time-Sensitive Networking (TSN) support
• EtherGREEN™ Energy Efficiency
  • Low power 10BASE-T1S PHY operation
  • Ultra-low power sleep mode
     
• Over-temperature and under-voltage detection
• Enhanced electromagnetic compatibility / electromagnetic interference (EMC/EMI) performance
  • Low RF emissions
  • Digital output drive strength adjust
     
• Small footprint 32-pin (5 x 5 mm) VQFN packages with wettable flanks
• -40°C to +125°C extended temperature range
• AEC-Q100 qualification
• Functional safety support (ISO 26262)

Applications

• Sensor/actuator applications
• Industrial - Factory automation
• Automotive
• Backplane