Maxim Integrated MAX921EPA+ Low-Power, High-Speed Single-Supply Comparators

The MAX921EPA+ is a high-performance comparator from Maxim Integrated, designed to offer a perfect blend of speed and power efficiency for a wide range of applications. This device operates from a single supply ranging from +2.5V to +11V or from dual supplies of ±1.25V to ±5.5V, making it versatile for both battery-powered and conventional circuits.

One of the standout features of the MAX921EPA+ is its low power consumption, drawing a mere 40µA of supply current per comparator. This feature is particularly beneficial for portable and battery-operated devices where power efficiency is critical. Despite its low power usage, the comparator does not compromise on speed, boasting a fast propagation delay of just 240ns. This makes it an excellent choice for high-speed systems that require quick response times.

The MAX921EPA+ also offers a unique combination of integrated features, including an internal 1.182V ±1% reference, which allows threshold setting with a single resistor, and a latch function that provides the ability to hold the comparator's output state until the next comparison cycle. This functionality is especially useful in timing and control applications.

Additionally, the device features a fully differential input stage with a common-mode range that extends from the negative supply to within 1.3V of the positive supply, ensuring reliable performance across a broad range of input conditions. The output stage is designed to sink current, enabling direct interfacing with TTL, CMOS, and other logic systems.

The MAX921EPA+ is available in an 8-pin DIP package, making it easy to integrate into various circuit designs. Its robust design includes overvoltage protection on the input and output, safeguarding the device against inadvertent voltage spikes that could otherwise cause damage.

Whether you're designing precision voltage monitors, threshold detectors, or high-speed trigger circuits, the Maxim Integrated MAX921EPA+ offers an optimal solution that combines energy efficiency with high-speed operation, all in a compact and reliable package.