MAX944ESD+

Comparators Overview

The MAX944ESD+ is a quad high-speed, low-power analog comparator optimized for single-supply operation at 3V or 5V. It features rail-to-rail input voltage range and outputs that pull to within 0.4V of either supply rail without external pullup circuitry. The device provides CMOS and TTL-compatible outputs with an internal hysteresis mechanism to ensure clean switching. Key electrical parameters include a propagation delay of 80ns (typical), a supply current of 350µA per comparator, and an input offset voltage of 1mV (typical). It operates within a supply voltage range of 2.7V to 5.5V and supports an operating temperature range of -40°C to +85°C.

Comparators Feature Summary

• Rail-to-rail input voltage range extending beyond both power-supply rails
• Internal hysteresis for clean output switching without external resistors
• CMOS and TTL logic interface compatibility
• Continuous short-circuit fault tolerance on all input and output pins

Comparators Applications

• Threshold detectors and discriminators
• Line receivers
• Zero-crossing detectors
• Sampling circuits

Comparators Procurement Notes

Verify the specific suffix 'ESD+' against the manufacturer's ordering information to confirm the package type, temperature range, and RoHS compliance status. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability. Cross-reference the datasheet revision date with the delivered product documentation to verify technical specifications match the intended design requirements.

Comparators Selection Notes

Select this component when a quad comparator configuration is required in a compact SO-14 package. It is suitable for designs needing rail-to-rail inputs and direct interfacing with standard logic families. Consider the MAX941 or MAX942 if fewer channels or additional latch/shutdown functions are needed. Evaluate the 80ns propagation delay against system timing constraints to ensure adequate speed for the application.

Comparators Part Context

The MAX944 belongs to the MAX94x family of high-speed comparators, which also includes the single-channel MAX941 and dual-channel MAX942. This family is designed for portable equipment and battery-powered systems due to its low power consumption and wide input common-mode range. The MAX944 specifically provides four independent comparators in a 14-pin narrow SO package, offering a space-efficient solution for multi-channel signal processing tasks.

Comparators Replacement Considerations

Direct pin-compatible replacements within the same series include the MAX944CPD (commercial grade) and MAX944EPD (extended temperature). Verify that any substitute maintains the required 80ns propagation delay and 350µA supply current per channel specifications.