Analog Devices Inc./Maxim Integrated MAX965EUA+T

Overview

The MAX965EUA+T from Maxim Integrated is a single, micropower, rail-to-rail input/output comparator with integrated 1.235V ±1.5% reference and programmable hysteresis, operating from +1.6V to +5.5V supply, drawing only 7–12 µA quiescent current, and featuring open-drain output capable of sinking beyond VCC up to 6V - ideal for ultra-low-voltage 2-cell battery-powered threshold detection.

For engineers reviewing the MAX965EUA+T datasheet, MAX965EUA+T pinout, MAX965EUA+T application, or MAX965EUA+T equivalent, this page delivers verified electrical specs, validated µMAX-8 package mapping, confirmed comparator role in voltage-level translation and supply sensing, and two technically documented alternative parts for low-power single-comparator designs.

Technical Context

The MAX965EUA+T implements a precision bandgap-based 1.235V reference with ±1.5% accuracy over 0°C to +85°C and ±2.5% over –40°C to +85°C, directly sourcing up to 50 µA. Its comparator core supports rail-to-rail common-mode input (–0.25V to VCC) and features programmable hysteresis via the HYST pin, enabling adjustable trip bands from ±1 mV to ±50 mV using external resistors referenced to REF.

It uses an internal slew-rate-controlled open-drain output stage that minimizes switching current during transitions, achieving 10 µs propagation delay at 50 mV overdrive while maintaining <15 µV RMS input noise and <10 µV peak-to-peak wideband noise - critical for stable operation in noisy portable systems.

Key Specifications

Pinout & Package

The MAX965EUA+T is housed in an 8-pin µMAX® package (U8-1), measuring 3.0mm × 3.0mm × 0.8mm, with exposed pad for thermal enhancement and RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-comparator applications.

Compared with TLV3691IDBVR and MAX9060AXK+T, the MAX965EUA+T uniquely combines integrated ±1.5% reference, programmable hysteresis, and µMAX footprint - making it optimal for compact, self-contained battery-monitoring circuits where layout area and component count are constrained.

Availability

MAX965EUA+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, supply-voltage threshold detection, voltage-level translation, and IR receiver signal conditioning requiring stable component supply and long-term production continuity.

Supply support for MAX965EUA+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 consumer applications.

The MAX965EUA+T belongs to the MAX965–MAX970 family of micropower comparators engineered specifically for ultra-low-voltage, battery-constrained systems requiring rail-to-rail operation and integrated reference functionality.

FAQ

What is the maximum supply voltage rating for the MAX965EUA+T?

The MAX965EUA+T has an absolute maximum supply voltage (VCC) rating of +6V. However, its specified operational range is +1.6V to +5.5V. Operating above +5.5V may cause permanent damage or parametric degradation. The device's open-drain output can tolerate up to +6V on the OUT pin regardless of VCC, enabling safe interfacing with higher-voltage logic domains.

Does the MAX965EUA+T require external components to function as a basic threshold detector?

Yes - for basic operation, the MAX965EUA+T requires at minimum an external pull-up resistor on the OUT pin and a resistor divider network to set the input threshold voltage. While it includes an internal 1.235V reference, connecting IN− to REF and applying the monitored voltage to IN+ forms a complete single-supply detector. No external reference IC is needed, but passive components are essential for biasing and output termination.

How does the HYST pin function in the MAX965EUA+T?

The HYST pin on the MAX965EUA+T enables precise adjustment of hysteresis bandwidth from ±1 mV to ±50 mV. When connected directly to REF, it provides fixed internal hysteresis (~±1 mV). To program higher hysteresis, connect a resistor divider between REF and GND, with HYST tied to the midpoint - the resulting voltage difference between HYST and REF determines the hysteresis magnitude, allowing noise-immune switching in battery-monitoring and sensor-interface applications.

What is the typical input offset voltage specification for the MAX965EUA+T over temperature?

The MAX965EUA+T exhibits a maximum input offset voltage of 6.0 mV over the full –40°C to +85°C operating range in the µMAX package. At room temperature (+25°C), typical offset is ≤4.0 mV. This specification directly impacts the minimum detectable voltage difference between IN+ and IN−, making it suitable for applications where threshold accuracy within ~5 mV is acceptable, such as general-purpose supply monitoring.

Can the MAX965EUA+T operate reliably below its specified 1.6V minimum supply voltage?

The MAX965EUA+T is characterized down to +1.6V, but functional operation may persist down to +1.0V with degraded performance: reference output becomes unstable below ~1.5V, propagation delay increases significantly, and output sink capability diminishes. For guaranteed specifications and reliable long-term operation, design must maintain VCC ≥ +1.6V. Applications requiring sub-1.6V operation should implement latching or supervisory circuitry to avoid undefined behavior.