Analog Devices Inc./Maxim Integrated MAX9119EXK-T

Overview

The MAX9119EXK-T from Analog Devices is a nanopower, rail-to-rail input comparator in a 5-pin SC70 package, featuring Beyond-the-Rails™ inputs (VEE −0.2V to VCC +0.2V), push-pull output stage, and ultra-low 350nA supply current at 1.6V. It operates from +1.6V to +5.5V and delivers ±5mA output drive with rail-to-rail swing-ideal for 2-cell battery monitoring where supply headroom and quiescent power are critical.

For engineers reviewing the MAX9119EXK-T datasheet, MAX9119EXK-T pinout, MAX9119EXK-T application, or MAX9119EXK-T equivalent, key selection criteria include its guaranteed 1.6V operation, 4mV internal hysteresis, 15µs low-to-high propagation delay at 1.6V, crowbar-current-free switching architecture, and compatibility with ground- or supply-referenced sensing in ultra-low-power systems.

Technical Context

The MAX9119EXK-T employs a break-before-make output stage that eliminates supply-current surges during transitions, reducing supply glitches and minimizing dynamic power consumption. Its input stage supports common-mode voltages beyond both supply rails by 200mV, enabling direct sensing at ground or supply lines without level shifting.

Unlike reference-equipped variants (MAX9117/MAX9118), the MAX9119EXK-T omits the internal 1.252V reference, enabling lower supply current (350nA vs. 600nA) and simplifying designs where an external reference or threshold is used. It features internal hysteresis (4mV) and no phase reversal under overdrive.

Key Specifications

Pinout & Package

The MAX9119EXK-T is housed in a 5-pin SC70 package (package code X5-1), measuring 2.0mm × 1.25mm × 0.9mm, with lead-free RoHS-compliant finish (+ suffix). This ultra-small footprint halves the area of standard SOT23 packages, supporting high-density portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3691IDCKR and MAX40005XK+T, the MAX9119EXK-T uniquely balances ultra-low 350nA current, guaranteed 1.6V operation, and push-pull output-enabling direct, component-free interfacing to microcontrollers in battery-critical applications where every nanoamp and millivolt matters.

Availability

The MAX9119EXK-T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, medical wearable safety cut-off, and industrial sensor ground-referenced detection requiring stable component supply across extended production lifecycles.

Supply support for MAX9119EXK-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 MAX9119EXK-T belongs to the MAX9117–MAX9120 nanopower comparator family, designed specifically for energy-constrained battery-powered systems requiring reliable threshold detection at minimal supply voltage and current.

FAQ

What is the minimum operating voltage for the MAX9119EXK-T?

The MAX9119EXK-T is guaranteed to operate down to +1.6V across the full −40°C to +85°C temperature range. At 1.6V, it maintains full functionality-including 350nA supply current, 4mV internal hysteresis, and rail-to-rail push-pull output swing-making it suitable for end-of-life battery monitoring in dual-cell alkaline or NiMH systems where voltage drops below 1.8V.

Does the MAX9119EXK-T have an internal voltage reference?

No, the MAX9119EXK-T does not include an internal voltage reference. Unlike the MAX9117/MAX9118 variants, it omits the 1.252V ±1.75% reference to achieve lower supply current (350nA vs. 600nA). Users must provide an external reference or threshold voltage to the IN+ or IN− pins for comparison.

What is the output configuration of the MAX9119EXK-T?

The MAX9119EXK-T features a CMOS push-pull output stage capable of sinking and sourcing up to ±5mA while delivering rail-to-rail voltage swing (VEE −0.3V to VCC +0.3V). This eliminates the need for external pull-up resistors and enables direct interfacing with microcontroller GPIOs configured for active-high or active-low interrupt inputs.

Can the MAX9119EXK-T accept input voltages outside the supply rails?

Yes, the MAX9119EXK-T supports Beyond-the-Rails™ inputs: its common-mode range extends from VEE −0.2V to VCC +0.2V. This allows direct connection to ground-referenced signals (e.g., current-sense shunts) or supply-referenced thresholds without level-shifting circuitry-reducing component count and error sources in precision sensing applications.

What is the propagation delay of the MAX9119EXK-T at low supply voltage?

At VCC = 1.6V, the MAX9119EXK-T exhibits a low-to-high propagation delay (tPD+) of 15µs and a high-to-low delay (tPD−) of 16µs, measured with 100mV input overdrive and 15pF load capacitance. These values remain stable across −40°C to +85°C, ensuring predictable timing in battery-voltage–dependent wake-up or alert circuits.