The quad 8-, 10- and 12-bit buffered voltage output DACs in a 10-lead microSOIC package that operate from a single 2.5 to 5.5V supply consuming 500microA at 3V. Their on-chip output amplifiers allow rail-to-rail output swing with a slew rate of 0.7 V/micros. A 2-wire serial interface is used which operates at clock rates up to 400kHz. This interface is SMBus-compatible at VDD <3.6V. Multiple devices can be placed on the same bus.