The PI5L100 is a Quad 2:1 multiplexer/demultiplexer LanSwitch with three-state outputs. This device can be used for switching between various standards, such as 10 Base-T, 100 Base-T, 100VG-AnyLAN or Token Ring. Generally, this part can be used to replace mechanical relays in low voltage LAN applications that have phsical layer, unshielded twisted pair media (UTP) with either CAT 3 or CAT 5 grade cable. The PI5L100 is powered from a 6.2V Zener voltage to reduce the insertion loss.