Microchip’s LAN878x 100BASE-T1 and LAN888x 1000BASE-T1 Single Pair Ethernet (SPE) PHY transceivers are designed for secure, scalable, and deterministic Ethernet connectivity for automotive, avionics, robotics, and industrial systems.
We first noticed Microchip SPE solutions in 2023 with the LAN8650/LAN8651 10BASE-T1S and LAN8770 100BASE-T1 transceivers, and they’ve launched other families since then, such as the LAN887x industrial Single Pair Gigabit Ethernet transceivers. The just-announced LAN878x/LAN88x parts introduce MACsec support, as well as Time Sensitive Networking (TSN) and FuSa (Functional Safety).
Microchip LAN878x and LAN888x key features and specifications:
- Standard and port speed
- LAN878x – IEEE 802.3bw, 100BASE-T1
- LAN888x – IEEE 802.3bp, 1000BASE-T1
- MACsec compliant to IEEE 802.1AE-2018 (M Version Only)
- Time Sensitive Networking (TSN) support
- Host interface (one or the other, depending on SKU)
-
SGMII (Serial Gigabit Media Independent Interface)
-
RGMII (Reduced Gigabit Media Independent Interface)
-
- OPEN Alliance TC10 support / wake-up support
- IEEE 802.1AS-2020, 802.1AS-2011
- ASIL B Functional Safety Ready with enhanced diagnostics
- Package – 40-pin (6 x 6 mm) VQFN package
- Temperature Range – -40 to +125°C (AEC-Q100 Automotive Grade 1 temperature range)
Six SKUs are available at this time: LAN8781, LAN8781, LAN8782, LAN8782, LAN8881, LAN8882, LAN8883, and LAN8884, whose differences are shown in the table below. Each comes with an M variant with support for MACsec security.
| SKU | Port speed | MACsec (M version) | TSN | SGMII | RGMII |
|---|---|---|---|---|---|
| LAN8781 | 100BASE-T1 | Yes | Yes | No | Yes |
| LAN8782 | 100BASE-T1 | Yes | Yes | Yes | No |
| LAN8881 | 1000BASE-T1 | Yes | Yes | No | Yes |
| LAN8882 | 1000BASE-T1 | Yes | Yes | Yes | No |
| LAN8883 | 100/1000BASE-T1 | Yes | Yes | No | Yes |
| LAN8884 | 100/1000BASE-T1 | Yes | Yes | Yes | No |
The LAN878x and LAN888x PHY transceivers are supported by hardware evaluation platforms, SGMII, USB, and PCIe plug-in boards, and Linux software drivers. This includes the LAN8781M EDS2 Daughter Card (EV25L23A) with 100BASE-T1 PHY and MACsec support, and the LAN8881M EDS2 Daughter Card (EV16A78A) with 1000BASE-T1 PHY and MACsec support.
The LAN878x and LAN888x families are now sampling, and the company has not released price information for the chips and daughter cards at this stage. Additional information may be found on the product page and in the press release.
Thanks to TLS for the tip.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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