Ultra-Low Supply Current 115μA at VDD = 3.6V 135μA at VDD = 5.5V 300nA Low-Power Power-Down Mode Single 2.7V to 5.5V Supply Voltage Fast 400kHz I²C-Compatible 2-Wire Serial Interface Schmitt-Trigger Inputs for Direct Interfacing to Optocouplers Rail-to-Rail Output Buffer Amplifiers Three Software-Selectable Power-Down Output Impedances 100kΩ, 1kΩ, and High Impedance Read-Back Mode for Bus and Data Checking Power-On Reset to Zero 8-Pin μMAX Package Applications Battery-Powered Applications Digital Gain and Offset Control Low-Cost Instrumentation Programmable Attenuators Programmable Voltage and Current Sources VCO/Varactor Diode Control