Maxim Integrated MAX921CUA+T Low-Power, High-Speed Single-Supply Comparators

The MAX921CUA+T from Maxim Integrated is a high-performance, low-power comparator designed for precision voltage monitoring and signal detection in a wide range of electronic applications. This device is part of Maxim's renowned family of comparators that are optimized for single-supply operations and are known for their high speed and low power consumption.

Operating from a single +2.5V to +11V supply or dual ±1.25V to ±5.5V supplies, the MAX921CUA+T features a typical supply current of just 4µA, making it an ideal choice for battery-powered and portable applications where power efficiency is critical. The device offers a fast propagation delay of typically 80ns, ensuring quick response times in high-speed systems.

Encased in a compact 8-pin µMAX package, the MAX921CUA+T is designed to save valuable board space while providing robust performance. Its small footprint makes it suitable for space-constrained applications such as handheld devices, wearables, and IoT endpoints.

The comparator includes an integrated 1.182V ±1% reference, giving designers the convenience of an onboard voltage reference to set precise thresholds for voltage comparison. This feature simplifies the design process and reduces the need for external components. Additionally, the MAX921CUA+T offers a push-pull output stage that eliminates the need for an external pull-up resistor, further reducing component count and system complexity.

The device is characterized for operation over the extended industrial temperature range of -40°C to +85°C, ensuring reliable performance in harsh environments. With its excellent power-supply rejection ratio (PSRR) and low offset voltage, the MAX921CUA+T delivers consistent and accurate performance across a range of supply voltages and temperatures.

Whether it's for voltage monitoring in power supplies, threshold detection in battery-operated devices, or any application requiring a high-speed, low-power comparator, the MAX921CUA+T stands out as a versatile and efficient solution. Maxim Integrated's commitment to quality and performance is evident in this product, making it a top choice for engineers and designers seeking a reliable comparator for their electronic designs.