Analog Devices Inc./Maxim Integrated MAX9030AXT

Overview

The MAX9030AXT from Maxim Integrated is a single, rail-to-rail output comparator with integrated 4mV hysteresis and active shutdown control, designed for low-power, single-supply operation from +2.5V to +5.5V. It delivers 188ns propagation delay, 35µA supply current per comparator, and operates across -40°C to +125°C - making it suitable for battery-powered portable systems and sensor threshold detection in automotive and industrial edge nodes.

For engineers reviewing the MAX9030AXT datasheet, MAX9030AXT pinout, MAX9030AXT application, or MAX9030AXT equivalent, key selection criteria include its SC70-6 package footprint, shutdown current of 0.05µA (typ), input common-mode range extending to VDD – 1.1V, and immunity to phase reversal under overdriven inputs.

Technical Context

The MAX9030AXT implements a CMOS comparator core with internal hysteresis and a high-impedance shutdown input (SHDN) that disables the internal bias network while placing the output in high-impedance state. Its input stage supports common-mode voltages from VSS to VDD – 1.1V, enabling direct interfacing with sensors and attenuated signals without level-shifting.

Output switching is optimized to minimize supply current transients: the output stage reduces dynamic switching current during transitions, effectively eliminating power-supply glitches. Shutdown activation requires logic-low voltage ≤ 0.3 × VDD on SHDN, with typical shutdown entry/exit delays of 40ns and 400ns respectively.

Key Specifications

Pinout & Package

The MAX9030AXT is housed in a 6-pin SC70 package (package code X6SN+1), measuring 2.0mm × 1.25mm × 0.9mm, with lead-free (RoHS-compliant) finish and tape-and-reel delivery (T suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3601DBVR and MAX9060AUT+T, the MAX9030AXT uniquely combines shutdown capability, built-in hysteresis, and SC70-6 packaging in a single comparator - reducing system-level component count and enabling true micro-power operation without design trade-offs in noise immunity or layout complexity.

Availability

MAX9030AXT is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor signal detection, and keyless entry systems requiring stable component supply across automotive (-40°C to +125°C) and industrial temperature ranges.

Supply support for MAX9030AXT 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, communications, and consumer applications.

The MAX9030AXT belongs to Maxim's ultra-low-power comparator product line, engineered specifically for space-constrained, battery-operated systems demanding precision threshold detection with minimal quiescent power and robust noise immunity.

FAQ

What is the maximum capacitive load the MAX9030AXT output can drive without oscillation?

The MAX9030AXT is specified to drive up to 150pF without sustained oscillations, as confirmed in the Electrical Characteristics table. This value reflects stability margin under worst-case conditions; for reliable operation with heavier loads, external buffering or slew-rate limiting is recommended. The 150pF limit ensures predictable 188ns propagation delay and rail-to-rail output swing across temperature and supply voltage variations in the MAX9030AXT.

Does the MAX9030AXT require external hysteresis resistors for stable operation?

No, the MAX9030AXT includes 4mV of internal hysteresis, which is sufficient to prevent oscillation with slow-moving or noisy input signals - eliminating the need for external positive-feedback resistors in most threshold-detection applications. This built-in hysteresis is factory-trimmed and remains stable across the -40°C to +125°C operating range of the MAX9030AXT.

What is the logic threshold for enabling normal operation of the MAX9030AXT shutdown pin?

The MAX9030AXT SHDN pin enters normal operation when driven to a logic-high voltage ≥ 0.7 × VDD. For example, at VDD = 3.3V, this corresponds to ≥ 2.31V. The pin exhibits high input impedance (0.1µA typical bias current), allowing direct connection to GPIOs or voltage dividers without loading concerns - a key design feature of the MAX9030AXT.

Can the MAX9030AXT operate from dual supplies?

Yes, the MAX9030AXT supports dual-supply operation from ±1.25V to ±2.75V, as stated in the Detailed Description section. However, its primary optimization is for single-supply use from +2.5V to +5.5V - including rail-to-rail output swing and input common-mode range extending to VSS. Dual-supply use is valid but does not activate additional features beyond those specified for single-supply operation in the MAX9030AXT.

Is the MAX9030AXT pin-compatible with other comparators in the MAX903x family?

No, the MAX9030AXT is not pin-compatible with MAX9031, MAX9032, or MAX9034 due to differing pin counts and functions: MAX9030AXT uses a 6-pin SC70 with SHDN, while MAX9031 uses 5-pin SC70/SOT23 without shutdown, and higher-channel variants have different pinouts and footprints. Each variant requires unique PCB layout - the MAX9030AXT's SHDN pin occupies Pin 5, which is absent in non-shutdown versions.