Features and Benefits
- Low-Cost Solution Available in Space-Saving SC70 Packages (Half the Size of SOT23)
- Low 2.8µA Supply Current
- 3µs Propagation Delay
- Internal 4mV Comparator Hysteresis
- Comparator Output Swings Rail-to-Rail
- 2.5 to 5.5V Single-Supply Voltage Range
- No Phase Reversal for Overdriven Inputs
- Space-Saving Packages
- 5-Pin SC70 (MAX9021)
- 8-Pin SOT23 (MAX9022)
- 8-Pin µMAX (MAX9022)
- 14-Pin TSSOP (MAX9024)
The MAX9021/MAX9022/MAX9024 single/dual/quad comparators are optimized for low-power consumption while still providing a fast output response. They are designed for single-supply applications from 2.5V to 5.5V, but can also operate from dual supplies. These comparators have a 3µs propagation delay and consume 2.8µA of supply current per comparator over the -40°C to +125°C operating temperature range. The combination of low-power, single-supply operation down to 2.5V, and ultra-small footprint makes these devices ideal for portable applications.
The MAX9021/MAX9022/MAX9024 have 4mV of built-in hysteresis to provide noise immunity and prevent oscillations even with a slow-moving input signal. The input common-mode range extends from the negative supply to within 1.1V of the positive supply. The design of the comparator-output stage substantially reduces switching current during output transitions, eliminating powersupply glitches.
The MAX9021 single comparator is available in tiny 5-pin SC70 and SOT23 packages. The MAX9022 dual comparator is available in 8-pin SOT23, µMAX®, and SO packages, and the MAX9024 quad comparator is available in 14-pin TSSOP and SO packages.
- Digital Line Receivers
- Keyless Entry Systems
- Mobile Communications
- Photodiode Preamps
- Portable Systems
- Sensor-Signal Detection
- Threshold Detectors/Discriminators
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
MAX9021 Reliability Data1/12/2023161K
Light Is On When Power Is Out2/16/2005
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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