Analog Devices Inc./Maxim Integrated MAX40009ANT+T

Overview

The MAX40009ANT+T from Analog Devices is a single micro-power rail-to-rail input comparator with push-pull output, operating from 1.7V to 5.5V supply and consuming only 12μA typical supply current at +25°C. It delivers 220ns propagation delay (L→H), 0.5mV typical input offset voltage, and integrated 3mV hysteresis - enabling clean switching in battery-powered IR receivers and threshold detectors.

For engineers reviewing the MAX40009ANT+T datasheet, MAX40009ANT+T pinout, MAX40009ANT+T application, or MAX40009ANT+T equivalent, this page provides verified functional identity, WLP-6 package mapping, automotive-grade (-40°C to +125°C) performance data, and validated alternative comparators for low-power sensing and level-detection designs.

Technical Context

The MAX40009ANT+T implements a high-speed, low-noise comparator core with rail-to-rail input stage extending 200mV beyond VDD and GND, and a robust push-pull output capable of sourcing/sinking ≥8mA while maintaining rail-to-rail swing. Its internal 3mV hysteresis band eliminates oscillation on slow-moving inputs without external components.

Shutdown functionality is implemented via an active-low SHDN pin that reduces quiescent current to ≤1μA over temperature, with defined logic thresholds (V_IL ≤ 0.55V, V_IH ≥ 1.3V) and 50μs power-up time. The device avoids supply glitches during switching through optimized output driver design, confirmed by measured ICC transients in typical operating characteristics.

Key Specifications

Pinout & Package

The MAX40009ANT+T is supplied in a 0.73mm × 1.1mm, 0.35mm pitch, 6-bump wafer-level package (WLP), with land pattern per Application Note 1891 and thermal resistance θ_JA = 98°C/W on a four-layer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3604DRYR and MAX9062AXK+T, the MAX40009ANT+T uniquely combines automotive temperature range, integrated hysteresis, shutdown capability, and push-pull output in a 0.73mm × 1.1mm WLP - making it optimal for space-constrained, battery-sensitive, and noise-prone applications where reliability across extreme conditions is non-negotiable.

Availability

The MAX40009ANT+T is available at Aetrix Electronics and suitable for portable battery monitors, automotive window comparators, IR receiver front-ends, and logic level translators requiring stable component supply across extended temperature ranges.

Supply support for MAX40009ANT+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 MAX40009ANT+T belongs to the MAX40008/MAX40009 family of micro-power comparators designed specifically for ultra-low-power sensing, battery monitoring, and signal conditioning in space- and energy-constrained systems.

FAQ

What is the maximum allowable voltage on the IN+, IN-, and SHDN pins of the MAX40009ANT+T?

The MAX40009ANT+T specifies absolute maximum ratings of -0.3V to +6V for IN+, IN-, and SHDN relative to GND. This allows safe operation with input signals exceeding the supply rails - for example, interfacing with 5V sensors while powered from 3.3V. Exceeding +6V may cause permanent damage, and operation outside -0.3V to +6V is not guaranteed.

Does the MAX40009ANT+T require external hysteresis for stable operation?

No, the MAX40009ANT+T includes 3mV typical internal hysteresis, which eliminates oscillation on slow-moving or noisy inputs without external components. This is confirmed in the Electrical Characteristics table and Applications Information section. External hysteresis is only needed if a larger band (e.g., >5mV) is required for specific noise immunity.

Can the MAX40009ANT+T operate from a 1.7V supply and still meet its 220ns propagation delay specification?

Yes - the 220ns propagation delay (L→H, 100mV overdrive) is specified and tested across the full 1.7V to 5.5V supply range. The Typical Operating Characteristics plots (toc10a/toc10b) confirm tPD remains ≤245ns at VDD = 1.7V and TA = +25°C, with <10% variation across temperature and supply.

What is the purpose of the SHDN pin on the MAX40009ANT+T, and how does it affect power consumption?

The SHDN pin is an active-low shutdown control that reduces the MAX40009ANT+T's supply current to ≤1μA over temperature when pulled low. With SHDN high, typical IDD is 12μA at +25°C. Power-up time from shutdown is 50μs, allowing rapid reactivation in duty-cycled sensor systems without compromising responsiveness.

How does the push-pull output of the MAX40009ANT+T differ from the open-drain output of the MAX40008ANT+T in practical circuit design?

The MAX40009ANT+T's push-pull output actively drives both HIGH (to VDD) and LOW (to GND), eliminating the need for an external pull-up resistor. This simplifies layout, reduces component count, and improves rise/fall times versus open-drain configurations like the MAX40008ANT+T, which requires a pull-up to define the HIGH state and cannot source current.