Maxim Integrated MAX921ESA/CSA Low-Power, High-Speed Single-Supply Comparators

The MAX921ESA/CSA from Maxim Integrated is a high-performance, low-power comparator that is designed for a wide variety of applications requiring high speed and low power consumption. This device operates from a single +2.5V to +11V supply or from a ±1.25V to ±5.5V dual supply, making it extremely versatile for different circuit configurations.

One of the key features of the MAX921ESA/CSA is its low power consumption. With a quiescent current of just 4µA (typical), it is an excellent choice for battery-powered and portable applications where power efficiency is crucial. Despite its low power usage, the MAX921ESA/CSA does not compromise on speed, offering a fast propagation delay of only 80ns (typical), which makes it suitable for high-speed systems.

The MAX921ESA/CSA boasts an internal hysteresis that ensures clean switching, even with slow-moving or noisy input signals. This feature helps to eliminate output oscillations and provides stable operation, which is essential for reliable system performance.

This comparator is available in a small 8-pin SO package, allowing for compact PCB layouts and space-saving designs. It is also specified for the extended industrial temperature range of -40°C to +85°C, ensuring reliable operation in a variety of harsh environments.

With its rail-to-rail output stage, the MAX921ESA/CSA can drive loads connected to either supply rail, which is particularly useful for single-supply operations. This capability enables the device to interface easily with other logic levels, broadening its compatibility with different types of digital circuits.

The MAX921ESA/CSA is an ideal solution for applications such as threshold detectors, window comparators, line receivers, and battery monitors, where high speed, low power, and precision are required. Its robust design and ease of use make it a popular choice among engineers for integrating into their designs.

Whether you are designing a power-sensitive portable device or a high-speed data acquisition system, the MAX921ESA/CSA from Maxim Integrated provides the performance and reliability you need in a compact, power-efficient package.