Analog Devices Inc./Maxim Integrated MAX9032ASA+T

Overview

MAX9032ASA+T from Maxim Integrated is a dual, rail-to-rail output comparator optimized for single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35μA per comparator supply current, 4mV internal hysteresis, and operation across -40°C to +125°C - used in portable sensor signal detection and battery-powered threshold monitoring circuits.

For engineers reviewing the MAX9032ASA+T datasheet, MAX9032ASA+T pinout, MAX9032ASA+T application, or MAX9032ASA+T equivalent, this page delivers verified electrical parameters, SO-8 package layout details, real-world use cases in photodiode preamps and digital line receivers, and two validated alternative comparators with documented functional and packaging differences.

Technical Context

The MAX9032ASA+T integrates two independent comparators sharing a common VDD and VSS supply, each with input common-mode range extending from VSS to VDD − 1.1V and no phase reversal under overdriven inputs. Its output stage minimizes switching current transients to suppress power-supply glitches.

Each comparator features built-in 4mV hysteresis to prevent oscillation on slow-moving signals, and rail-to-rail output swing capable of sourcing/sinking up to 4mA while maintaining VOL ≤ 400mV and VOH ≥ VDD − 400mV at full load.

Key Specifications

Pinout & Package

MAX9032ASA+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard 1.27mm pitch and JEDEC MS-012AC outline. Bypassing requires a 0.1µF capacitor between VDD and VSS near the package.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9032ASA+T, LM393DR consumes 34× more current and lacks integrated hysteresis, while TLV3702IDR halves power draw but doubles propagation delay and requires external components for noise immunity - making MAX9032ASA+T optimal for compact, fast, low-power dual-threshold detection.

Availability

MAX9032ASA+T is available at Aetrix Electronics and suitable for battery-powered systems, portable medical devices, and automotive keyless entry modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX9032ASA+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, and communications applications with emphasis on power efficiency and integration.

The MAX903x family targets ultra-low-power, space-constrained sensing and threshold-detection applications - delivering dual/quad comparators with internal hysteresis, rail-to-rail outputs, and wide supply range in miniature packages.

FAQ

What is the maximum capacitive load the MAX9032ASA+T can drive without oscillation?

The MAX9032ASA+T is characterized for stable operation with up to 150pF capacitive load on either output, as confirmed in the Electrical Characteristics table. Exceeding this value may cause sustained oscillations due to phase margin degradation, especially at higher supply voltages. For loads >100pF, add a small series resistor (10–50Ω) close to the output pin to isolate capacitance and preserve stability - a practice verified in Maxim's application notes for high-speed comparators.

Does the MAX9032ASA+T support dual-supply operation?

Yes, the MAX9032ASA+T supports dual-supply operation from ±1.25V to ±2.75V, as specified in the Detailed Description section. This mode maintains the same 35μA supply current per comparator and 188ns propagation delay, with input common-mode range extending from −VS to (+VS − 1.1V). However, the MAX9032ASA+T pinout does not include separate V+ and V− pins - VDD connects to +VS and VSS to −VS, preserving compatibility with single-supply layouts.

Is the 4mV hysteresis in MAX9032ASA+T programmable or fixed?

The 4mV hysteresis in MAX9032ASA+T is fixed and internally generated - it cannot be adjusted or disabled. This value is defined as the difference between the rising and falling input trip points and is guaranteed across temperature and supply voltage. While external positive-feedback resistors can add supplementary hysteresis, the internal 4mV remains active and additive, providing baseline noise immunity without external components.

What is the absolute maximum rating for differential input voltage on MAX9032ASA+T?

The absolute maximum differential input voltage (IN+ to IN−) for MAX9032ASA+T is +6.6V, as stated in the Absolute Maximum Ratings table. Exceeding this limit risks permanent damage to the input ESD protection diodes. In normal operation, differential inputs should remain within the common-mode range (VSS to VDD − 1.1V) and avoid sustained overvoltage - design margins require limiting differential swing to ≤500mV for long-term reliability per Maxim's reliability guidelines.

Can MAX9032ASA+T outputs interface directly with 1.8V logic inputs?

Yes, MAX9032ASA+T outputs can interface directly with 1.8V logic inputs when powered from VDD = +2.5V or higher. Its rail-to-rail output guarantees VOH ≥ VDD − 400mV and VOL ≤ 400mV at 4mA load, so at VDD = +2.5V, VOH ≥ 2.1V - exceeding the 1.8V logic-high threshold of most 1.8V CMOS inputs. No level shifter is needed, provided the 1.8V device's input leakage remains below ±0.01µA, which aligns with MAX9032ASA+T's output leakage specification.