MAX971

Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators


Please check latest availability status for a specific part variant.

Description

The MAX971–MAX974 and MAX981–MAX984 single/dual/quad low-voltage comparators feature the lowest power consumption available. These micropower devices draw less than 4µA supply current over temperature (MAX971/MAX972/MAX981/MAX982), and include an internal 1.182V ±1% (MAX971/MAX973/ MAX974) or ±2% (MAX981–MAX984) voltage reference and programmable hysteresis.

Ideal for 3V or 5V single-supply applications, these devices operate from a single 2.5V to 11V supply (or ±1.25V to ±5.5V dual supplies), and each comparator's input voltage ranges from the negative supply rail to within 1.3V of the positive supply.

The single MAX971/MAX981 and the dual MAX973/ MAX982/MAX983 provide a unique, simple method for adding hysteresis without feedback or complicated equations, simply by using the HYST pin plus two resistors.

The MAX971–MAX974 and MAX981–MAX984's open-drain outputs permit wire-ORed configurations. Thanks to an 11V output range and separate GND pin for the output transistor (MAX971/MAX974, MAX981/MAX984), these devices are ideal for level translators and bipolar to single-ended converters. For similar devices with complementary output stages, see the MAX921-MAX924 (1% reference) and the MAX931–MAX934 (2% reference).
MAX971, MAX972, MAX973, MAX974, MAX981, MAX982, MAX983, MAX984: Typical Operating Circuit MAX971, MAX972, MAX973, MAX974, MAX981, MAX982, MAX983, MAX984: Typical Operating Circuit Enlarge+

Key Features

  • Available in Ultra-Small Packages:
    • UCSP™ (MAX972)
    • µMAX® (MAX9_1/MAX9_2/MAX9_3)
  • Ultra-Low Quiescent Current (4µA, max) Over Extended Temp Range (MAX971/MAX981)
  • Power Supplies:
    • Single 2.5V to 11V
    • Dual ±1.25V to ±5.5V
  • Input Voltage Range Includes Negative Supply
  • Internal Bandgap Reference
    • 1.182V ±1% (MAX97_)
    • 1.182V ±2% (MAX98_)
  • 12µs Propagation Delay (10mV Overdrive)
  • Output Has Separate GND Pin (MAX9_1/MAX9_4)

Applications/Uses

  • Battery-Powered Systems
  • Level Translators
  • Oscillator Circuits
  • Threshold Detectors
  • Window Comparators
Part NumberComp-
arators
tPD
(ns)
Input RangeVSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxmaxSee Notes
MAX972 212000to Neg. Rail2.5111.610Open Drain
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
UCSP (B)/9
UMAX/8
$1.76 @1k
See All Comparators (95)
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.

Part NumberComp-
arators
Thresh.
(V)
Internal Ref. Accuracy
(%)
tPD
(µs)
VSUPPLY
(V)
VSUPPLY
(V)
ICC
(µA)
Prog. Hyst.VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxmaxSee Notes
MAX971 11.1821122.5113.2Yes10Open Drain
-55 to +125
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
UMAX/8
$3.06 @1k
MAX973 214.5Yes
-55 to +125
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
UMAX/8
$3.15 @1k
MAX974 416.6No
-55 to +125
-40 to +85
0 to +70
PDIP/16
SOIC (N)/16
$3.49 @1k
MAX981 123.2Yes
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
UMAX/8
$2.31 @1k
MAX982 224.5Yes
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
UMAX/8
$2.59 @1k
MAX983 224.5Yes
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
UMAX/8
$2.60 @1k
MAX984 426.6No
-40 to +85
0 to +70
PDIP/16
SOIC (N)/16
$2.93 @1k
See All Comparators + Reference (48)

Technical Documents

App Note 4543 Precision Circuit Monitors Negative-Supply Thresholds
App Note 1101 IR Sensor/Monitor Wakes Host System

Quality and Environmental Data

Product Reliability Reports: MAX971.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
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.

Quality Management System >
Environmental Management System >

 
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