The 20MHz, 3-wire SPITM, QSPITM, MICROWIRETM, and DSP-compatible serial interface save board space and reduce the complexity of opto- and transformer-isolated applications. The MAX5722 on-chip power-on reset (POR) circuit resets the DAC outputs to zero and loads the output with a 100k resistor to ground. This provides additional safety for applications that drive valves or other transducers that need to be off on power-up. The MAX5722's software-controlled power-down reduces supply current to less than 0.3A and provides software-selectable output loads (1k, 100k, or high impedance) while in power-down. The MAX5722 is specified over the -40C to +125C automotive temperature range.