General Description

The MAX985/MAX986/MAX989/MAX990/MAX993/MAX994 single/dual/quad micropower comparators feature low-voltage operation and rail-to-rail inputs and outputs. Their operating voltages range from 2.5V to 5.5V, making them ideal for both 3V and 5V systems. These comparators also operate with ±1.25V to ±2.75V dual supplies. They consume only 11µA of supply current while achieving a 300ns propagation delay.

Features

♦ 11µA Quiescent Supply Current

♦ 2.5V to 5.5V Single-Supply Operation

♦ Common-Mode Input Voltage Range Extends 250mV Beyond the Rails

♦ 300ns Propagation Delay

♦ Push-Pull Output Stage Sinks and Sources 8mA Current (MAX985/MAX989/MAX993)

♦ Open-Drain Output Voltage Extends Beyond VCC (MAX986/MAX990/MAX994)

♦ Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption

♦ 80µA Supply Current at 1MHz Switching Frequency

♦ No Phase Reversal for Overdriven Inputs

♦ Available in Space-Saving Packages:

   UCSP (MAX985)

   SOT23 (MAX985/MAX986/MAX989/MAX990)

   µMAX® (MAX989/MAX990)

Applications

  Portable/Battery Powered Systems

  Mobile Communications

  Zero-Crossing Detectors

  Window Comparators

  Level Translators

  Threshold Detectors/Discriminators

  Ground/Supply-Sensing Applications

  IR Receivers

  Digital Line Receivers