Analog Devices Inc./Maxim Integrated MAX992ESA+T

Overview

MAX992ESA+T from Maxim Integrated is a dual, micropower, rail-to-rail input/output comparator with open-drain outputs, operating from +2.5V to +5.5V single supply or ±1.25V to ±2.75V dual supplies. It delivers 120ns propagation delay, 48μA per comparator quiescent current, and ±2.5mV internal hysteresis - enabling precise threshold detection in battery-powered portable systems and level translation between mismatched logic domains.

For engineers reviewing the MAX992ESA+T datasheet, MAX992ESA+T pinout, MAX992ESA+T application, or MAX992ESA+T equivalent, key selection considerations include its open-drain output capable of pulling up to 6V above VEE, rail-to-rail input range extending 250mV beyond supply rails, and guaranteed operation across –40°C to +85°C for industrial and automotive-sensing front-ends.

Technical Context

The MAX992ESA+T implements two independent comparators sharing a common VCC and VEE supply pair, each featuring an open-drain output stage that supports external pull-up to voltages up to 6V above VEE - enabling bipolar-to-single-ended conversion and logic-level translation without level-shifter ICs. Its input stage achieves rail-to-rail common-mode range (VEE – 0.25V to VCC + 0.25V) with 1.0pA typical input bias current and 0.5mV typical input offset voltage.

Propagation delay remains stable at 120ns (100mV overdrive, CL = 15pF, VCC = 5V) across temperature (–40°C to +85°C), while supply current stays within 48μA to 96μA per comparator over full voltage and temperature range - critical for low-duty-cycle sensor wake-up circuits and energy-harvesting applications.

Key Specifications

Pinout & Package

MAX992ESA+T is housed in an 8-pin SO (Small Outline) package (package code S8-2), with exposed pad not electrically connected. The device uses standard SOIC-8 footprint and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual open-drain comparator applications.

Compared with LM393DR and TLV3702IDR, MAX992ESA+T uniquely balances nanosecond-speed response, micropower consumption, rail-to-rail input flexibility, and open-drain output versatility - making it optimal for compact, multi-function sensor hubs requiring both precision thresholding and inter-domain signaling.

Availability

MAX992ESA+T is available at Aetrix Electronics and suitable for portable power management, logic-level translation, zero-crossing detection, and threshold-based sensor interface applications requiring stable component supply and long-term industrial availability.

Supply support for MAX992ESA+T 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 industrial, automotive, communications, and computing markets, with emphasis on power efficiency and signal integrity.

The MAX992ESA+T belongs to Maxim's high-speed micropower comparator family, engineered specifically for battery-constrained systems needing fast, accurate voltage comparisons without sacrificing input flexibility or output configurability.

FAQ

What is the maximum allowable voltage on the MAX992ESA+T open-drain output?

The MAX992ESA+T open-drain output (OUTA and OUTB) is rated for –0.3V to +6V relative to VEE. When VEE = GND, this means the output can be safely pulled up to +6V - enabling direct interfacing with higher-voltage logic families or optocouplers without additional level-shifting components. This rating is absolute maximum; sustained operation above VCC should use appropriate current limiting.

Does the MAX992ESA+T require external hysteresis for noise immunity?

No - the MAX992ESA+T includes ±2.5mV internal hysteresis, which suppresses output oscillation caused by input noise or slow slew-rate signals. This eliminates the need for external positive-feedback resistors in most applications, simplifying PCB layout and reducing component count. External hysteresis can be added if wider bands (e.g., >10mV) are required for specific noise environments.

Can the MAX992ESA+T operate from a single 3.3V supply?

Yes - the MAX992ESA+T operates from +2.5V to +5.5V single supply, so 3.3V is fully supported. At VCC = 3.3V, it maintains 120ns propagation delay (100mV overdrive), 48μA typical supply current per comparator, and rail-to-rail input range from –0.25V to +3.55V - making it ideal for modern low-voltage embedded systems powered by 3.3V LDOs or PMICs.

What is the input bias current specification for MAX992ESA+T?

The MAX992ESA+T has a typical input bias current of 1.0pA at room temperature, with a maximum of 10nA over the full –40°C to +85°C range. This ultra-low bias enables high-impedance sensor interfaces (e.g., thermistors, photodiodes, or pH electrodes) without significant measurement error due to leakage, especially when used with MΩ-range feedback or divider networks.

Is the MAX992ESA+T pin-compatible with other devices in the MAX99x family?

The MAX992ESA+T shares the same 8-pin SO package (S8-2) and pinout as MAX991ESA, MAX991EUA-T, and MAX992EUA-T - but differs functionally from push-pull variants (MAX991/MAX995). While physical layout is identical, substituting a push-pull device (e.g., MAX991ESA) would require redesigning output pull-up networks and verifying load drive capability, as MAX992ESA+T's open-drain outputs cannot source current.