MAX991 (4)

The MAX991 series is available from Analog Devices at Xecor. Designed for high-speed, micropower, low-voltage, and rail-to-rail I/O comparator applications, the MAX991 offers 120ns propagation delay, 48µA quiescent supply current, and operation from +2.5V to +5.5V single supply or ±1.25V to ±2.75V dual supplies. Available in multiple package options, including 8-SOIC, it is ideal for digital-line receivers, portable battery-powered systems, threshold detectors, and mobile communications. Whether used in ground/supply sensing, IR receivers, or zero-crossing detectors, this series ensures efficiency, low power consumption, and reliable performance for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the MAX991 series below.

Part Number Description Package Inventory Add To Bom
MAX991EKA+T Analog Comparators High-Speed, Micropower, Low-Voltage, Rail-to-Rail I/O Comparators SOT-23-8 5,941
MAX991ESA+ Packaged in an 8-pin SOIC SOIC-8 7,998
MAX991EUA+ Analog Comparators High-Speed, Micropower, Low-Voltage, Rail-to-Rail I/O Comparators TSSOP-8 3,557
MAX991ESA+T Analog Comparators High-Speed, Micropower, Low-Voltage, Rail-to-Rail I/O Comparators SOIC-8 3,000

Key Featrues

Low Power Consumption: The comparators consume only 48µA per comparator, making them ideal for battery-powered and portable systems, significantly enhancing energy efficiency and extending battery life.
Rail-to-Rail Inputs and Outputs: The comparators support rail-to-rail input and output operation, allowing them to handle signals close to the supply rails, which improves accuracy and versatility in low-voltage applications.
High-Speed Operation: With a propagation delay of 120ns, these comparators are suitable for high-speed applications such as digital-line receivers and threshold detectors, ensuring quick response times.
Wide Supply Voltage Range: Operating from +2.5V to +5.5V (single supply) or ±1.25V to ±2.75V (dual supply), these comparators are compatible with both 3V and 5V systems, offering flexibility across various use cases.
Compact Packaging: Available in space-saving packages like 8-Pin µMAX and 5-Pin SC70, these comparators are ideal for applications with strict size constraints, such as mobile communications and portable devices.

Applications

Threshold Detector for Battery Monitoring: The MAX991 is ideal for monitoring battery voltage levels in portable devices. Its rail-to-rail input capability and low-voltage operation make it suitable for detecting under-voltage or over-voltage conditions, ensuring safe and efficient battery management in mobile communications and portable battery-powered systems.
Zero-Crossing Detector for AC Signal Processing: The MAX991 is well-suited for zero-crossing detection in AC signal applications. Its fast propagation delay and rail-to-rail input/output capabilities ensure precise detection of signal transitions, making it ideal for use in power control systems, inverters, and motor control circuits.
Window Comparator for Signal Validation: The MAX991 can be used as a window comparator to validate signal levels within a specific range. Its low quiescent current and rail-to-rail operation make it perfect for applications like level translators and supply/ground sensing, ensuring accurate signal validation in industrial and automotive systems.
IR Receiver Signal Processor: The MAX991 is ideal for processing signals from IR receivers in remote control systems. Its high-speed response and low-power operation enable efficient decoding of IR signals, making it suitable for consumer electronics, home automation, and remote sensing applications.