MAX971, MAX972, MAX973, MAX974, MAX981, MAX982, MAX983, MAX984
Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators
Active: In Production.
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).
- 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)
- Battery-Powered Systems
- Level Translators
- Oscillator Circuits
- Threshold Detectors
- Window Comparators
Typical Operating Circuit
Notes and Comments
Micropower comparator + 1% reference and hysteresis, single supply capability, CMVR extends to GND (MAX971)
Dual, single-supply micropower comparator (MAX972)
Dual, single-supply comparator with 1% voltage reference (MAX973)
Quad, micropower comparator with 1% voltage reference (MAX974)
Low-cost comparator + 2% reference and hysteresis, single supply, CMVR extends to GND (MAX981)
Dual, low-cost, single-supply comparator + 2% reference and hysteresis (MAX982)
Dual, low-cost, single-supply comparator + 2% reference and hysteresis (window comparator input configuration)
Quad, low-cost comparator + 2%-accurate reference, single/dual supply (MAX984)
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Document Ref.: 19-0450
This page last modified: 2007-05-30