MAX9031AUK+T

Overview

The MAX9031AUK+T is a single-channel analog comparator in a 5-pin SOT-23 package. It operates on a +2.5V to +5.5V supply, consuming 35µA typical current per channel. Key electrical parameters include a 188ns propagation delay, ±1mV input offset voltage, and 4mV internal hysteresis. The push-pull output swings rail-to-rail, and the input common-mode range extends from VSS to (VDD - 1.1V). It functions within a -40°C to +125°C temperature range.

Feature Summary

• Rail-to-rail output stage with reduced switching current to minimize power-supply glitches
• Internal 4mV hysteresis for noise immunity and oscillation prevention
• No phase reversal for overdriven inputs

Applications

• Battery-powered portable systems
• Mobile communications devices
• Sensor signal detection circuits
• Photodiode preamplifiers
• Threshold detectors and discriminators

Procurement Notes

Verify the specific suffix 'U' confirms the SOT-23-5 package variant. Confirm '+T' indicates tape-and-reel packaging. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the manufacturer's ordering information to confirm current production status and availability constraints.

Selection Notes

Select this part when a single comparator with an ultra-small footprint is required. It is suitable for applications needing low quiescent current and rail-to-rail output swing. Consider alternative packages like SC70 if pinout compatibility differs. Verify that the 188ns propagation delay meets system timing requirements.

Part Context

This device belongs to the MAX9030/MAX9031/MAX9032/MAX9034 family of low-cost, ultra-small, single/dual/quad comparators. While the MAX9030 includes a shutdown feature, the MAX9031 provides a single comparator without shutdown functionality. The family shares similar electrical characteristics optimized for single-supply operation.

Replacement Considerations

MAX9031AXK+T is a direct substitute using the SC70-5 package instead of SOT-23-5.