The Am79C874 NetPHY-1LP device provides the physical (PHY) layer and transceiver functions for one 10/100 Mbps Ethernet port. It delivers the dual benefits of CMOS low power consumption and small package size. Operating at 3.3 V, it consumes only 0.3 W. Three power management modes provide options for even lower power consumption levels. The small 12x12 mm 80-pin PQL package conserves valuable board space on adapter cards, switch uplinks, and embedded Ethernet applications. The NetPHY-1LP 10/100 Mbps Ethernet PHY device is IEEE 802.3 compliant. It can receive and transmit data reliably at over 130 meters. It includes on-chip input filtering and output waveshaping for unshielded twisted pair operation without requiring external filters or chokes. The NetPHY-1LP device can use 1:1 isolation transformers or 1.25:1 isolation transformers. 1.25:1 isolation transformers provide 20% lower transmit power consumption. A PECL interface is available for 100BASE-FX applications.