220ns, 12µA, 6-Bump WLP Comparators with Shutdown

Micropower Comparators in Ultra-Tiny, 1.1 x 0.73mm, 6-bump WLP and SOT23 Packages

Please check latest availability status for a specific part variant.


The MAX40008/MAX40009 are single micropower comparators featuring low-voltage operation and rail-to-rail inputs. Their operating supply voltage range from 1.7V to 5.5V, which makes them ideal for systems running from nominal 1.8V to 5V supplies.

While only consuming 12µA of supply current, the MAX40008/MAX40009 achieve a 220ns propagation delay. These devices feature 0.5mV (typ) input offset voltage and internal hysteresis, ensuring 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 MAX40009 has a push-pull output stage, while the MAX40008 has an open-drain output stage that can be pulled beyond VDD to 6V (max) above GND input. The open-drain version is ideal for level translators and bipolar to single-ended converters.

The MAX40008/MAX40009 are available in tiny 0.73mm x 1.1mm 6-bump wafer-level packages (WLPs), significantly reducing the required board area. An alternative 6-pin SOT23 package is also available. These devices are fully specified over the -40°C to +125°C automotive temperature range.
MAX40008, MAX40009: Simplified Block Diagram MAX40008, MAX40009: Simplified Block Diagram Enlarge+

Key Features

  • 220ns Propagation Delay
  • Tiny 0.73mm x 1.1mm with 0.35mm Pitch 6-Bump WLP and SOT23 Packages Save Board Space
  • Rail-to-Rail Inputs
  • Low Operating Current ≤ 17μA (max) Over Temperature
  • No Phase Reversal for Overdriven Inputs
  • Integrated RF Immunity Filters
  • Supply Voltage Range (1.7V to 5.5V) Allows Operation from 1.8V, 2.5V, 3V, and 5V Supplies
  • Push-Pull (MAX40009) or Open-Drain (MAX40008) Outputs
  • -40°C to +125°C Temperature Range
  • Low-Power Shutdown Input Reduces Quiescent Current to 150nA


  • IR Receivers
  • Level Translators
  • Mobile Communications
  • Portable/Battery-Powered Systems
  • Threshold Detectors/ Discriminators
  • Window Comparators
Part NumberComp-
Input RangeVSUPPLY (Total)
ICC per Comp.
Logic OutOper. Temp.
typminmaxmaxtypmaxSee Notes
MAX40008 1220
Rail to Rail
above Pos. Rail
1.75.5250.57Open Drain-40 to +125
$0.40 @1k
MAX40009 Push-Pull
See All Comparators (91)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX40008EVKIT: Evaluation Kit for the MAX40008/MAX40009
MAX40009EVKIT: Evaluation Kit for the MAX40008/MAX40009

Quality and Environmental Data

Request Reliability Report for: MAX40008 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX40008 Orcad Library
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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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