Analog Devices Inc./Maxim Integrated MAX9077ESA+T

Overview

MAX9077ESA+T from Maxim Integrated is a dual ultra-low-power comparator optimized for single-supply portable systems. It delivers 580ns propagation delay, 3µA per comparator supply current, and rail-to-rail output swing with ±2mA drive capability - enabling direct interface with TTL/CMOS logic in battery-powered threshold detection circuits.

For engineers reviewing the MAX9077ESA+T datasheet, MAX9077ESA+T pinout, MAX9077ESA+T application, or MAX9077ESA+T equivalent, key selection criteria include its 2.1V to 5.5V operation range, ground-sensing inputs, absence of input differential clamps, and SO-8 package compatibility with industrial-grade temperature stability (-40°C to +85°C).

Technical Context

The MAX9077ESA+T implements a BiCMOS-based push-pull output stage that eliminates shoot-through current surges during switching, maintaining stable 3µA quiescent current across dynamic transitions. Its input stage supports rail-to-rail differential voltage without phase inversion, even when overdriven beyond the common-mode range (–0.2V to V_CC – 1.2V).

Unlike comparators with internal input clamps, the MAX9077ESA+T allows unrestricted differential input voltages up to ±6V, while its large internal drivers sustain rail-to-rail output swing into 2mA loads - critical for reliable logic-level interfacing in low-voltage systems.

Key Specifications

Pinout & Package

The MAX9077ESA+T is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant lead-free terminations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV7215M5X/NOPB and TLV3702IDR, the MAX9077ESA+T uniquely balances ultra-low 3µA current, 580ns speed, rail-to-rail output, and ground-sensing inputs - making it optimal for compact, battery-sensitive systems requiring precise dual-threshold decisions without external components.

Availability

MAX9077ESA+T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors/discriminators, and IR receivers requiring stable component supply across extended production lifecycles.

Supply support for MAX9077ESA+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX9077ESA+T belongs to Maxim's ultra-low-power comparator product line, designed specifically for energy-constrained portable and wireless applications where nanowatt-level quiescent current and small-footprint packaging are essential.

FAQ

What is the operating temperature range for the MAX9077ESA+T?

The MAX9077ESA+T is specified for operation from –40°C to +85°C, matching industrial-grade requirements. This range is guaranteed across all electrical parameters in the datasheet, including propagation delay, input offset voltage, and supply current. The SO-8 package's thermal performance supports reliable long-term operation in enclosed enclosures without forced airflow. MAX9077ESA+T maintains full functionality across this range without derating.

Does the MAX9077ESA+T require external hysteresis for noise immunity?

The MAX9077ESA+T does not include internal hysteresis, so external positive feedback is required for noise-immune threshold detection. A three-resistor network (R1, R2, R3) connected between OUTA/OUTB, INA+/INB+, and INA–/INB– provides adjustable hysteresis - for example, 50mV using 10MΩ, 100kΩ, and 64.9kΩ resistors. MAX9077ESA+T's matched input pairs ensure consistent hysteresis behavior across both channels.

Can the MAX9077ESA+T operate from a 2.1V supply?

Yes, the MAX9077ESA+T is fully specified down to 2.1V supply voltage, with guaranteed performance including 580ns propagation delay, ±2mA output drive, and rail-to-rail swing. At 2.1V, VOL remains ≤0.4V and VOH ≥1.7V, ensuring compatibility with 1.8V logic families. MAX9077ESA+T achieves this while consuming only 3µA per comparator - critical for single-cell alkaline or lithium primary battery systems.

What is the maximum differential input voltage the MAX9077ESA+T can tolerate?

The MAX9077ESA+T tolerates differential input voltages up to ±6V due to the absence of internal differential clamps - significantly exceeding its supply rails. This allows safe operation with fast transient inputs, such as ESD-coupled IR receiver signals or inductive kickback in sensor interfaces. MAX9077ESA+T maintains functional integrity without latch-up or parametric shift under these conditions, provided absolute maximum ratings (–0.3V to V_CC + 0.3V per pin) are observed.

Is the MAX9077ESA+T pin-compatible with other SO-8 dual comparators?

The MAX9077ESA+T uses a nonstandard SO-8 pinout optimized for dual independent comparators (e.g., INA+, INA–, OUTA, INB+, INB–, OUTB, GND, V_CC), differing from generic dual op-amp layouts. It is not pin-compatible with industry-standard dual op-amps like LM358 or MCP602. MAX9077ESA+T requires dedicated PCB layout per its datasheet pin configuration - verified in Maxim's SO-8 land pattern #90-0096.