Overview
Features and Benefits
- 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)
Product Details
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).
Applications
- Battery-Powered Systems
- Level Translators
- Oscillator Circuits
- Threshold Detectors
- Window Comparators
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Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Design Resources
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