The MAX4188/MAX4189/MAX4190 operate from a +5V single supply or from 2.25V to 5.5V dual supplies. These amplifiers consume only 1.5mA per amplifier and are capable of delivering 55mA of output current, making them ideal for portable and battery-powered equipment. The MAX4188/MAX4189/MAX4190 have a high-speed disable/enable mode that isolates the inputs, places the outputs in a high-impedance state, and reduces the supply current to 450A per amplifier. Each amplifier can be disabled independently. High off isolation, low switching transient, and fast enable/disable times (120ns/35ns) allow these amplifiers to be used in a wide range of multiplexer applications. A settling time of 22ns to 0.1%, a slew rate of up to 350V/s, and low distortion make these devices useful in many generalpurpose, high-speed applications. The MAX4188/MAX4189 are available in a tiny 16-pin QSOP package, and the MAX4190 is available in a space-saving 8-pin MAX package.