Microchip launches 10BASE-T1S Ethernet transceivers for zonal vehicle edge nodes

Microchip Technology has expanded its 10BASE-T1S single-pair Ethernet portfolio with two physical medium dependent (PMD) transceivers, the LAN8679 and LAN8680, and the LAN8660X/1X/2X family of endpoints with integrated transceivers. The devices are designed for zonal vehicle architectures, as well as industrial automation, robotics and aerospace applications.

The LAN8679 uses the standardized OPEN Alliance 3-Pin (OA3P) interface and comes in an 8-pin VDFN package, which measures 3 × 3 mm. The LAN8680 adds system basis chip (SBC) functions: power management, wake/sleep control and watchdog supervision. Low-dropout regulators support internal power and two switchable power supply outputs, monitoring of all supplies and an ultra-low power sleep mode, in a 16-pin, 3 × 4.5 mm VDFN package.

Microchip says the devices are designed to meet AEC-Q100 and ISO 26262 functional safety standards. All three offer a -40° C to 125° C temperature range.

The LAN8660X/1X/2X endpoints integrate a PMD transceiver into a single-chip Remote Control Protocol (RCP) device, so edge nodes for control systems, lighting and audio don’t need an external PHY. The family has up to four serial communication interfaces for sensors and actuators and stores its configuration in on-chip non-volatile memory. Configuration, control and diagnostics are managed over the network. Microchip describes the design as a software-less architecture that eliminates the need for additional software programming.

The LAN8660X control endpoint supports time synchronization over generalized Precision Time Protocol (gPTP) and comes in a 32-pin, 5 × 5 mm TQFN package with wettable flanks.

In a 10BASE-T1S multidrop topology, multiple nodes share a single bus line, typically eight or more, according to Microchip. The company says that reduces wiring weight and system cost and eliminates the need for gateways, making it easier to connect sensors and actuators directly to the network edge.

Microchip’s earlier LAN866x 10BASE-T1S endpoints appeared in Charged in November 2025.

The same physical layer is specified for charging communication in the Megawatt Charging System (MCS), where chargebyte’s CCL MCS charge controller uses it in place of power line communication.

The LAN8679, LAN8680 and LAN8660X/1X/2X are available in limited sampling.

Source: Microchip Technology