Analog Devices Inc./Maxim Integrated MAX932ESA+

Overview

MAX932ESA+ from Maxim Integrated is a dual micropower comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, TTL/CMOS-compatible outputs sourcing up to 40mA, and operation from +2.5V to +11V single supply (or ±1.25V to ±5.5V dual supply). It targets battery-powered threshold detection where ultra-low 4µA quiescent current and rail-to-rail input range (V− to V+ − 1.3V) are critical.

For engineers reviewing the MAX932ESA+ datasheet, MAX932ESA+ pinout, MAX932ESA+ application, or MAX932ESA+ equivalent, key selection criteria include guaranteed hysteresis implementation without external feedback, output swing from V+ to V− (not GND), −40°C to +85°C temperature rating, and compatibility with low-noise 3V/5V systems requiring stable reference-assisted decision logic.

Technical Context

The MAX932ESA+ integrates two independent comparators sharing one internal 1.182V reference and a dedicated HYST pin for resistor-programmable hysteresis. Its output stage eliminates crowbar current during transitions, preventing supply-line glitches and parasitic feedback-critical for noise-sensitive, layout-constrained applications.

Input common-mode range extends from V− to V+ − 1.3V; output swings fully from V+ to V− (dual-supply mode), enabling bipolar signal monitoring. Propagation delay is 12µs at 10mV overdrive, and input offset voltage is ±10mV max over temperature.

Key Specifications

Pinout & Package

MAX932ESA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), rated for −40°C to +85°C operation. The package is RoHS-compliant and features exposed pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator with reference applications.

Compared with MAX932CSA+, MAX932ESA+ adds extended temperature reliability without changing footprint or circuit design; versus MAX922ESA+, it trades 1% reference accuracy for integrated hysteresis control and 33% lower quiescent current - favoring battery longevity over marginal voltage precision.

Availability

MAX932ESA+ is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and oscillator circuits requiring stable component supply across industrial and medical OEM programs.

Supply support for MAX932ESA+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and communications markets.

The MAX931–MAX934 family delivers ultra-low-power comparators with integrated references for energy-constrained systems where supply current, board space, and design simplicity are primary constraints.

FAQ

What is the maximum supply voltage for MAX932ESA+?

The absolute maximum supply voltage for MAX932ESA+ is +12V between V+ and V−. For reliable operation, the recommended single-supply range is +2.5V to +11V, and dual-supply range is ±1.25V to ±5.5V. Exceeding +11V risks parametric degradation, and operation above +12V may cause permanent damage per Absolute Maximum Ratings.

Does MAX932ESA+ support single-supply operation?

Yes, MAX932ESA+ supports single-supply operation: connect V− to GND, apply +2.5V to +11V to V+, and reference all signals to GND. In this configuration, outputs swing from V+ to GND, maintaining TTL/CMOS compatibility. The internal reference remains referenced to V− (i.e., GND), simplifying threshold design.

How is hysteresis implemented on MAX932ESA+?

Hysteresis on MAX932ESA+ is implemented via the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. This creates a programmable hysteresis band from 0mV to 100mV, centered on the comparator's trip point. No external op-amp or feedback loop is required - the HYST pin handles hysteresis internally.

What is the output voltage swing of MAX932ESA+?

MAX932ESA+ outputs swing from V+ to V− in dual-supply mode, or from V+ to GND in single-supply mode (when V− = GND). At V+ = 5V, VOH ≈ V+ − 0.4V and VOL ≈ V− + 0.4V (or GND + 0.4V). This rail-to-rail swing ensures robust logic-level compatibility without level shifters.

Can MAX932ESA+ drive LEDs directly?

Yes, MAX932ESA+ can drive LEDs directly: its output sources up to 40mA continuously and sinks up to 5mA. For example, with V+ = 5V and a red LED (VF ≈ 1.8V), a 100Ω series resistor limits current to ~30mA - well within spec. Avoid exceeding 40mA average to prevent thermal stress in the µMAX package.