Microchip Expands Single Pair Ethernet Portfolio with New 10BASE-T1S Devices

Microchip Technology has expanded its Single Pair Ethernet portfolio with the introduction of the LAN8679 and LAN8680 10BASE-T1S PMD transceivers, alongside the LAN8660X/1X/2X family of endpoints with integrated transceivers. These solutions are designed to support next-generation zonal architectures by providing flexible, space-efficient connectivity that extends Ethernet to the network edge.

The new devices address the requirements of automotive, industrial, and robotics systems that are evolving toward fully Ethernet-based networks. Microchip identifies simplified architectures, reduced wiring complexity, and efficient edge-node integration as key requirements for these systems. The new 10BASE-T1S devices are designed to meet AEC-Q100 and ISO 26262 functional safety standards, building on Microchip’s VelocityDRIVE portfolio with additional multidrop connectivity solutions featuring a standardized, streamlined interface.

The LAN8679 provides a standardized Open Alliance 3-Pin (OA3P) interface in a compact 8-pin VDFN package, supporting space-constrained edge nodes while reducing pin count and design complexity. The LAN8680 builds on these capabilities by integrating System Basis Chip (SBC) features, including power management, system wake/sleep control, and watchdog supervision. Both devices are engineered to enhance reliability and safety for demanding automotive and industrial environments.

The LAN8660X/1X/2X endpoint family complements the transceivers by integrating a PMD transceiver into a single-chip Remote Control Protocol (RCP) solution. This enables compact, fully integrated edge nodes for control systems, lighting, and audio without external PHY components. The 10BASE-T1S multidrop topology allows multiple nodes—typically eight or more—to share a single bus line, reducing wiring weight, lowering system costs, and eliminating the need for gateways while making it easier to connect sensors and actuators directly to the network edge.

Specifications

Key Features

• The LAN8679 and LAN8680 are 10BASE-T1S PMD transceivers.
• The LAN8660X/1X/2X family provides endpoints with integrated transceivers.
• The LAN8679 uses a standardized Open Alliance 3-Pin (OA3P) interface and is housed in a compact 8-pin VDFN package.
• The LAN8679 supports space-constrained edge nodes while reducing pin count and design complexity.
• The LAN8680 integrates System Basis Chip (SBC) features, including power management, system wake/sleep control, and watchdog supervision.
• The LAN8660X/1X/2X family integrates a PMD transceiver into a single-chip Remote Control Protocol (RCP) solution, enabling compact, fully integrated edge nodes without external PHY components.
• The devices use a 10BASE-T1S multidrop topology, allowing multiple nodes—typically eight or more—to share a single bus line.
• The multidrop approach reduces wiring weight, lowers system costs, and eliminates the need for gateways.
• The multidrop architecture supports direct connection of sensors and actuators to the network edge.
• The devices are designed to meet AEC-Q100 and ISO 26262 functional safety standards.
• The portfolio provides additional multidrop connectivity solutions with a standardized, streamlined interface.
• Both the LAN8679 and LAN8680 are engineered to enhance reliability and safety for demanding automotive and industrial environments.

Applications

• Automotive zonal architecture
• Industrial automation
• Robotics
• Control systems
• Lighting
• Audio
• Edge-node connectivity in consolidated all-Ethernet network architectures

Avalibility

The LAN8679, LAN8680 and LAN8660X/1X/2X devices are available in limited sampling from Microchip. Customers interested in the new 10BASE-T1S devices can contact a Microchip sales representative to learn more about availability. Microchip’s broader 10BASE-T1S portfolio includes PMD transceivers and endpoint devices for extending Ethernet connectivity to the network edge, with the company highlighting solutions for automotive, industrial, robotics, aerospace and defence applications.