As vehicles and industrial systems become more connected, a new generation of Single Pair Ethernet technology is enabling communication across automotive and industrial networks.
Microchip Technology has introduced the LAN878x and LAN888x families of Single Pair Ethernet (SPE) PHY transceivers, adding built-in MACsec security, Time-Sensitive Networking (TSN) support and functional safety features for automotive and industrial networks using all-Ethernet architectures.
The new PHY families are available in 100BASE-T1, 1000BASE-T1 and dual-speed 100/1000BASE-T1 variants, targeting Software-Defined Vehicles (SDVs), ADAS platforms, zonal gateways and other mission-critical systems that require deterministic, low-latency communication.
A key differentiator is integrated hardware-based MACsec security compliant with IEEE 802.1AE-2018. The devices provide frame-level encryption, data integrity and replay protection directly in hardware, reducing the need for additional software layers or external security components while avoiding added network latency.
The LAN878x and LAN888x devices also include native TSN support, enabling predictable Ethernet communication for applications where timing and synchronization are critical, including automotive control systems, robotics and industrial automation.
To support functional safety requirements, the PHY families incorporate advanced diagnostics and link-monitoring capabilities designed for ISO 26262 ASIL-B systems. These features improve fault detection and network visibility compared with conventional SPE PHY implementations.
Microchip has also focused on scalability and platform reuse. The families feature pin-compatible options across 100BASE-T1 and 1000BASE-T1 variants, along with support for both SGMII and RGMII host interfaces. This allows developers to reuse existing hardware designs while increasing network bandwidth as system requirements evolve.
Beyond automotive applications, the devices are positioned for use in industrial automation, avionics, robotics and other systems that rely on secure and deterministic Ethernet connectivity.
“OEMs need a clear and efficient path to scale Ethernet performance as vehicle networks evolve,” said Charlie Forni, corporate vice president of Microchip’s networking and connectivity business unit. “The LAN878x and LAN888x families allow teams to reuse designs while supporting higher data rates and stronger security. By integrating MACsec directly in the PHY, we help designers enhance network protection without added system complexities.”
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