LAN8770 100BASE-T1 Ethernet PHY Transceivers Microchip Technology LAN8770 100BASE-T1 Ethernet PHY Transceivers are compact, cost-effective, single-port devices compliant with the IEEE 802.3bw-2015 specification. The LAN8770 delivers 100Mbit/s transmit and receive capability over a single Unshielded Twisted Pair (UTP) cable, reinforcing cable lengths of up to at least 15m.