Analog Devices Inc./Maxim Integrated MAX9043BEUB-T

Overview

MAX9043BEUB-T from Analog Devices is a dual micropower comparator with integrated 2.048V precision voltage reference, operating from 2.5V to 5.5V supply. It delivers rail-to-rail inputs/outputs, 400ns propagation delay, ±3mV internal hysteresis, and only 55µA supply current - ideal for battery-powered precision level detection in portable instrumentation.

For engineers reviewing the MAX9043BEUB-T datasheet, MAX9043BEUB-T pinout, MAX9043BEUB-T application, or MAX9043BEUB-T equivalent, key selection criteria include dual-comparator functionality with shared reference, A-grade (±0.4% initial accuracy, 6ppm/°C tempco), µMAX-10 package compatibility, and rail-to-rail push-pull output drive capability up to 8mA.

Technical Context

The MAX9043BEUB-T integrates two independent comparators sharing a single high-accuracy 2.048V reference, each featuring rail-to-rail input stages with common-mode range extending 250mV beyond rails and input bias current of 1.0pA typical. Its unique output stage minimizes supply current surges during switching, eliminating supply glitches common in conventional comparators.

Both comparators use internal ±3mV hysteresis for noise immunity and support uncommitted inverting inputs - enabling flexible configurations such as window comparators or independent threshold detection. The reference provides stable 2.048V output with <4.7nF capacitive-load stability and ±0.4% initial accuracy over –40°C to +85°C.

Key Specifications

Pinout & Package

The MAX9043BEUB-T is housed in a 10-pin µMAX package (3mm × 5mm, 0.05-inch pitch), RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9042BEUA and TLV3702IDR, the MAX9043BEUB-T offers fully independent inverting inputs, lowest system-level power, and smallest solution size - making it optimal for new ultra-low-power dual-threshold designs where reference integration and layout simplicity are critical.

Availability

MAX9043BEUB-T is available at Aetrix Electronics and suitable for battery management, industrial sensor interfaces, IR receivers, and digital line receivers requiring stable component supply and long-term production continuity.

Supply support for MAX9043BEUB-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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX9038–MAX9043/MAX9050–MAX9053 product line delivers micropower, single-supply comparator-plus-reference ICs optimized for precision threshold detection in space- and energy-constrained portable and battery-operated systems.

FAQ

What is the reference voltage accuracy and temperature coefficient of the MAX9043BEUB-T?

The MAX9043BEUB-T features an A-grade 2.048V precision reference with ±0.4% initial accuracy over –40°C to +85°C and a typical temperature coefficient of 6ppm/°C. This ensures voltage drift remains under ±0.5mV across its full operating range, supporting high-accuracy threshold applications such as battery end-of-charge detection where tight tolerances are mandatory. The MAX9043BEUB-T reference is laser-trimmed and curvature-corrected for stability.

Does the MAX9043BEUB-T support rail-to-rail input and output operation?

Yes, the MAX9043BEUB-T supports true rail-to-rail input operation with a common-mode range extending 250mV beyond both supply rails (VEE – 0.25V to VCC + 0.25V), and rail-to-rail push-pull outputs capable of sinking and sourcing up to 8mA. This allows the MAX9043BEUB-T to accurately compare signals near ground or VCC and directly drive logic inputs or small loads without level-shifting circuitry.

What is the supply current consumption of the MAX9043BEUB-T at 5V and 2.7V?

The MAX9043BEUB-T draws 55µA typical supply current at VCC = 5V and 55µA typical at VCC = 2.7V, per the A-grade electrical characteristics table. This ultra-low quiescent current remains stable across temperature and supply voltage, enabling multi-year operation from coin-cell batteries. The MAX9043BEUB-T achieves this while powering two comparators and a precision reference simultaneously.

Can the MAX9043BEUB-T drive capacitive loads on its REF pin?

Yes, the MAX9043BEUB-T reference output is stable with capacitive loads up to 4.7nF, as confirmed in the Electrical Characteristics table and Applications Information section. No external compensation is required. Adding a capacitor improves transient response during load steps but is optional for static applications. The MAX9043BEUB-T's internal design ensures stability without external components across its full specified load range.

What package type and pin count does the MAX9043BEUB-T use?

The MAX9043BEUB-T uses a 10-pin µMAX package (3mm × 5mm, 0.05-inch pitch), RoHS-compliant and lead-free. This compact, surface-mount package supports high-density layouts and is compatible with standard reflow profiles per JEDEC J-STD-020. The MAX9043BEUB-T pinout includes dedicated terminals for both comparator inputs/outputs, VCC, VEE, REF, and one no-connect pin - all clearly defined in the Pin Configurations section of the datasheet.