Analog Devices Inc./Maxim Integrated MAX932EPA

Overview

The MAX932EPA from Maxim Integrated is a dual micropower comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, TTL/CMOS-compatible outputs capable of sourcing up to 40mA and sinking >5mA, and operation from +2.5V to +11V single supply (or ±1.25V to ±5.5V dual supply). It targets battery-powered threshold detection and window-comparator circuits where ultra-low quiescent current (<4µA over temperature) and rail-to-rail input range (V− to V+ −1.3V) are critical.

For engineers reviewing the MAX932EPA datasheet, MAX932EPA pinout, MAX932EPA application, or MAX932EPA equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in low-power sensing, and validated alternative options for design continuity - all grounded in the official MAX931–MAX934 family documentation.

Technical Context

The MAX932EPA integrates two independent comparators sharing one internal 1.182V reference and a dedicated HYST pin for resistor-programmable hysteresis without external feedback. Its output stage eliminates crowbar current during transitions, suppressing supply-induced parasitic feedback and enabling stable operation even with suboptimal PCB layout.

Input common-mode range extends from V− to V+ −1.3V; output swings from V+ to V− (not GND), requiring V− connection to ground for single-supply TTL compatibility. The device draws ≤4µA supply current over −40°C to +85°C and supports 12µs propagation delay (10mV overdrive) at 5V.

Key Specifications

Pinout & Package

MAX932EPA uses an 8-pin plastic DIP package rated for −40°C to +85°C operation. Pin numbering follows standard DIP top-view convention (pin 1 at notch end, counterclockwise).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX932EPA, MAX932ESA offers identical functionality in a surface-mount package but lacks extended temperature rating, while MAX922EPA trades 2% reference tolerance and ultra-low power for 1% accuracy - making it preferable only when threshold precision outweighs battery-life impact.

Availability

MAX932EPA is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, and window comparators requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MAX932EPA 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, with emphasis on low-power, high-reliability solutions.

The MAX931–MAX934 family was engineered specifically for micropower sensing and battery-critical systems, integrating reference and comparator functions to minimize external components while maintaining rail-to-rail input and robust output drive.

FAQ

What is the operating temperature range of the MAX932EPA?

The MAX932EPA is specified for −40°C to +85°C operation, as indicated by the "E" suffix in its part number. This extended temperature range makes it suitable for industrial, automotive, and outdoor electronics applications where ambient conditions exceed commercial limits. All electrical characteristics in the MAX932EPA datasheet are guaranteed across this full range, including the <4µA maximum supply current and 1.182V ±2% reference voltage.

Can the MAX932EPA operate from a 3V single supply?

Yes, the MAX932EPA operates from +2.5V to +11V single supply, so 3V is fully supported. At 3V, supply current remains <4µA, input common-mode range extends from V− (GND) to 1.7V, and propagation delay increases slightly to ~14µs (10mV overdrive). The internal 1.182V reference remains functional and stable, enabling accurate threshold setting even at minimum supply voltage.

How is hysteresis implemented on the MAX932EPA?

Hysteresis on the MAX932EPA is implemented using the HYST pin (pin 6): connect R1 between REF and HYST, and R2 between HYST and V−. The hysteresis band (VHB) ≈ 2 × (VREF − VHYST), adjustable from 0 to 100mV. This method requires no external op-amp or feedback loop - unlike conventional comparator hysteresis - and applies identically to both comparators within the MAX932EPA.

What is the output voltage swing of the MAX932EPA?

The MAX932EPA outputs swing from V+ to V−, not V+ to GND. When V− is tied to GND (single-supply mode), OUTA and OUTB swing from V+ to 0V - delivering true TTL/CMOS-compatible levels with V+ = 5V. In dual-supply mode (e.g., V+ = +5V, V− = −5V), outputs swing from +5V to −5V, supporting bipolar signal monitoring without level-shifting circuitry.

Is the MAX932EPA pin-compatible with any other Maxim comparators?

No - the MAX932EPA is not pin-compatible with MAX922EPA or other members of the MAX93x family except itself. While MAX933 and MAX934 share the same 8-pin DIP/SO/µMAX footprint as MAX932, their pinouts differ: MAX933 swaps INB−/INB+, and MAX934 uses a 16-pin package. Only MAX932 variants (e.g., MAX932ESA, MAX932CUA) share identical pin configuration and function mapping.