Analog Devices Inc./Maxim Integrated MAX9119EXK+TG24

Overview

MAX9119EXK+TG24 from Maxim Integrated is a nanopower, rail-to-rail input comparator without internal reference, housed in a 5-pin SC70 package. It operates from +1.6V to +5.5V, draws only 350nA supply current at 25°C, features Beyond-the-Rails™ inputs (VEE − 0.2V to VCC + 0.2V), and delivers CMOS push-pull output with ±5mA drive capability - ideal for 2-cell battery monitoring in portable medical instruments.

For engineers reviewing the MAX9119EXK+TG24 datasheet, MAX9119EXK+TG24 pinout, MAX9119EXK+TG24 application, or MAX9119EXK+TG24 equivalent, key selection criteria include ultra-low quiescent current, guaranteed operation down to 1.6V, input common-mode range extending beyond supply rails, rail-to-rail output swing under 5mA load, and absence of internal reference for flexible threshold design.

Technical Context

The MAX9119EXK+TG24 implements a break-before-make output stage that minimizes supply-current surges during switching, eliminating typical supply glitches. Its input stage supports differential operation across the full extended common-mode range and includes internal hysteresis (4mV) to prevent oscillation with slow or noisy inputs.

This device uses a dedicated push-pull output architecture - unlike open-drain variants (e.g., MAX9120) - enabling direct interfacing with CMOS logic without external pull-up resistors. It lacks an integrated voltage reference, requiring external threshold generation, distinguishing it functionally from the MAX9117/MAX9118 family members.

Key Specifications

Pinout & Package

MAX9119EXK+TG24 is packaged in a 5-pin SC70 (SOT-353) outline, measuring 2.0mm × 1.25mm × 0.9mm, with gull-wing leads and lead-free (Pb-free) finish per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9117EXK+TG24, MAX9119EXK+TG24 trades internal reference for 250nA lower supply current and full threshold design freedom; versus TLV3691IDCKR, it offers push-pull output and tighter input offset but slightly higher current and no open-drain option.

Availability

MAX9119EXK+TG24 is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and medical wearable sensor applications requiring stable component supply across long production lifecycles.

Supply support for MAX9119EXK+TG24 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 power, sensing, and interface applications in industrial, medical, and portable systems.

The MAX9117–MAX9120 family was engineered specifically for nanopower, rail-compatible threshold detection in battery-constrained devices - emphasizing supply current minimization, extended input range, and glitch-free switching behavior.

FAQ

What is the operating supply voltage range for MAX9119EXK+TG24?

The MAX9119EXK+TG24 operates from +1.6V to +5.5V across the full temperature range (−40°C to +85°C). This wide range supports direct connection to unregulated battery sources such as single Li-ion (2.7V–4.2V) or dual alkaline (2.0V–3.0V fresh), enabling simplified power architecture in portable equipment.

Does MAX9119EXK+TG24 include an internal voltage reference?

No, MAX9119EXK+TG24 does not include an internal voltage reference. It belongs to the "without reference" variant of the MAX9117–MAX9120 family. Threshold voltages must be supplied externally via resistor dividers, DACs, or other reference sources - providing full design flexibility absent from the MAX9117/MAX9118 versions.

What is the output configuration of MAX9119EXK+TG24?

MAX9119EXK+TG24 features a CMOS push-pull output stage capable of sourcing and sinking up to ±5mA while maintaining rail-to-rail swing. Unlike open-drain variants (e.g., MAX9120), it requires no external pull-up resistor and can directly drive CMOS logic inputs, LEDs, or small capacitive loads without additional components.

How does the input common-mode range of MAX9119EXK+TG24 compare to standard comparators?

MAX9119EXK+TG24 supports a Beyond-the-Rails™ input common-mode range from VEE − 0.2V to VCC + 0.2V. This allows direct sensing at ground (VEE) or supply rail (VCC) without level-shifting circuitry - a key advantage over conventional comparators limited to the supply rails, especially in low-voltage battery monitoring.

What is the typical supply current of MAX9119EXK+TG24 at room temperature?

The typical supply current of MAX9119EXK+TG24 is 350nA at +5V and +25°C. Over temperature (−40°C to +85°C) and supply voltage (+1.6V to +5.5V), it remains ≤1.2µA - making it among the lowest-power comparators available for always-on, energy-harvested, or long-life battery-powered applications.