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Microchip LAN8670/1/2

10BASE-T1S Single Pair Ethernet PHY

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)