High-Speed, Micropower, Low-Voltage, Rail-to-Rail I/O Comparators

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The MAX987/MAX988/MAX991/MAX992/MAX995/ MAX996 single/dual/quad micropower comparators feature low-voltage operation and rail-to-rail inputs and outputs. Their operating voltage ranges 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 48µA per comparator while achieving a 120ns propagation delay.

Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis ensures clean output switching, even with slow-moving input signals.

The output stage's unique design limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX987/MAX991/MAX995 have a push-pull output stage that sinks as well as sources current. Large internal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX988/MAX992/MAX996 have an open-drain output stage that can be pulled beyond VCC to 6V (max) above VEE. These open-drain versions are ideal for level translators and bipolar to single-ended converters.

The single MAX987/MAX988 are available in tiny 5-pin SC70 packages, while the dual MAX991/MAX992 are available in ultra-small µMAX® package.
MAX987, MAX988, MAX991, MAX992, MAX995, MAX996: Typical Operating Circuit MAX987, MAX988, MAX991, MAX992, MAX995, MAX996: Typical Operating Circuit Enlarge+

Key Features

  • 120ns Propagation Delay
  • 48µA Quiescent Supply Current
  • +2.5V to +5.5V Single-Supply Operation
  • Common-Mode Input Voltage Range Extends 250mV Beyond the Rails
  • Push-Pull Output Stage Sinks and Sources 8mA Current (MAX987/MAX991/MAX995)
  • Open-Drain Output Voltage Extends Beyond VCC (MAX988/MAX992/MAX996)
  • Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption
  • 100µA Supply Current at 1MHz Switching Frequency
  • No Phase Reversal for Overdriven Inputs
  • Available in Space-Saving Packages:
    • 5-Pin SC70 (MAX987/MAX988)
    • 8-Pin µMAX (MAX991/MAX992)


  • Digital-Line Receivers
  • Ground/Supply Sensing
  • IR Receivers
  • Level Translators
  • Mobile Communications
  • Portable Battery-Powered Systems
  • Threshold Detectors
  • Window Comparators
  • Zero-Crossing Detectors
Request Reliability Report for: MAX996 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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