The MAX3406/MAX3407/MAX3408 are general-purpose line-terminating networks designed to change the termination value of a line, depending on the state of a digital control line, allowing the connection to a coaxial cable or a twisted pair wire. These devices are switchable between 75, 100, and 120. The MAX3406 can switch from 75 to 100, the MAX3407 can switch from 75 to 120, and the MAX3408 can switch from 100 to 120 termination. Termination resistance values are guaranteed to 2.5% through -40C to +85C and for signal levels of 3.6V. The MAX3406/MAX3407/MAX3408 consume only 50A supply current and are fully specified for operation from a +4.5V to +5.5V power supply. These devices are available in a tiny 5-pin SOT23 package. All specifications are guaranteed over the extended temperature range of -40C to +85C.