Analog Devices Inc./Maxim Integrated MAX982ESA

Overview

The MAX982ESA from Maxim Integrated is a dual ultra-low-power open-drain comparator with integrated 1.182V ±2% voltage reference and programmable hysteresis via HYST pin. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, draws ≤4µA supply current over temperature, and supports rail-to-rail input voltage range (V− to V+ − 1.3V). Used in battery-powered threshold detectors and window comparators.

For engineers reviewing the MAX982ESA datasheet, MAX982ESA pinout, MAX982ESA application, or MAX982ESA equivalent, this page delivers verified electrical parameters, confirmed SO-8 package mapping, validated dual-comparator functional role, and two technically documented alternative parts for low-power comparator selection.

Technical Context

The MAX982ESA implements two independent micropower comparators sharing a common internal bandgap reference and HYST control node. Each comparator features open-drain output sinking to V−, enabling wire-OR configurations and level translation between bipolar and single-ended domains.

Its hysteresis is configured externally using two resistors between REF and HYST pins - delivering a programmable 0–100mV hysteresis band without feedback loops. Input common-mode range extends from V− to V+ − 1.3V, and propagation delay is 12µs (10mV overdrive) at 5V supply.

Key Specifications

Pinout & Package

MAX982ESA is housed in an 8-pin SO (Small Outline) package with standard .150" width and JEDEC MS-012AC outline. Pin 1 is marked by notch or dot; pin numbering follows counterclockwise convention from top-left corner when viewed from top.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power comparator applications.

Compared with MAX983ESA and TLV3702IDR, the MAX982ESA uniquely combines internal ±2% reference, HYST-programmable hysteresis, open-drain outputs sinking to V−, and SO-8 compatibility - making it optimal for space-constrained, battery-operated threshold and level-shift applications where reference integration and low I_Q are mandatory.

Availability

MAX982ESA is available at Aetrix Electronics and suitable for battery-powered systems, power-good monitors, level translators, and oscillator circuits requiring stable component supply with extended temperature support (−40°C to +85°C).

Supply support for MAX982ESA 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 MAX982ESA belongs to the MAX97x/MAX98x micropower comparator family, engineered specifically for ultra-low-quiescent-current sensing in energy-constrained systems where internal reference integration and programmable hysteresis reduce bill-of-materials and layout complexity.

FAQ

What is the maximum supply voltage for MAX982ESA?

The MAX982ESA supports a total supply voltage up to 11V in single-supply mode (V+ to V−) or ±5.5V in dual-supply mode. Absolute maximum ratings specify V+ to V− or V+ to GND up to +12V, but continuous operation beyond 11V is not guaranteed. The device remains functional with V+ = 11V and V− = 0V, delivering full specification performance including reference stability and comparator response.

Does MAX982ESA include an internal voltage reference?

Yes, the MAX982ESA integrates a 1.182V bandgap voltage reference referenced to V−, with ±2% accuracy over the −40°C to +85°C temperature range. This reference is accessible at the REF pin and can source up to 25µA or sink up to 15µA. It is used internally by both comparators and is available for external threshold generation - eliminating the need for discrete reference ICs in most low-power sensing applications.

How is hysteresis implemented on MAX982ESA?

Hysteresis on the MAX982ESA is implemented via the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. The voltage difference between REF and HYST sets the hysteresis band (V_HB ≈ 2 × (V_REF − V_HYST)), with a maximum of 100mV. This method applies identical hysteresis to both comparators and avoids external feedback networks, reducing component count and board area while ensuring consistent noise immunity.

What is the input common-mode voltage range of MAX982ESA?

The input common-mode voltage range of MAX982ESA is specified from V− to V+ − 1.3V. For example, with V+ = 5V and V− = 0V, inputs may swing from 0V to 3.7V. This range allows reliable operation near the negative rail and accommodates most single-supply sensor interfaces. Inputs tolerate overvoltage up to ±300mV beyond the rails without damage, but guaranteed operation is limited to the specified common-mode window.

Can MAX982ESA operate from a 3V supply?

Yes, the MAX982ESA is fully specified for operation from a 3V single supply (V+ = 3V, V− = 0V). At 3V, supply current remains ≤4µA, propagation delay increases slightly to 12µs (10mV overdrive), and the reference maintains ±2% accuracy. Input common-mode range becomes 0V to 1.7V, and output sink capability is reduced - verified in the 3V Electrical Characteristics table. It is routinely used in 3V coin-cell and Li-ion battery systems.