Analog Devices Inc./Maxim Integrated MAX9075EUK-T

Overview

MAX9075EUK-T from Maxim Integrated is a single-channel, rail-to-rail output comparator optimized for ultra-low-power, single-supply portable systems. It delivers 580ns propagation delay at just 3µA supply current, operates from 2.1V to 5.5V, features ground-sensing inputs (–0.2V to V_CC – 1.2V), and drives 2mA loads with rail-to-rail swing - ideal for battery-powered threshold detection in compact IR receivers and keyless entry sensors.

For engineers reviewing the MAX9075EUK-T datasheet, MAX9075EUK-T pinout, MAX9075EUK-T application, or MAX9075EUK-T equivalent, this page provides verified electrical parameters, SC70-5/SOT23-5 package mapping, confirmed input/output voltage behavior across temperature, real-world hysteresis design guidance, and validated alternative comparators for low-power, single-supply sensing circuits.

Technical Context

The MAX9075EUK-T uses BiCMOS process technology to achieve sub-4µA quiescent current while maintaining 580ns propagation delay and rail-to-rail output drive capability. Its input stage lacks differential clamping, enabling rail-to-rail differential input voltage tolerance and no phase inversion under overdrive - critical for robust signal discrimination in noisy environments.

Internal push-pull output drivers deliver VOL ≤ 0.4V at 2mA sink and VOH ≥ V_CC – 0.4V at 2mA source across –40°C to +85°C. Input bias current is –5nA (typ), input offset voltage is ±1mV (max), and common-mode rejection ratio is 60dB (min) - ensuring stable operation with varying supply and reference conditions.

Key Specifications

Pinout & Package

MAX9075EUK-T is packaged in a 5-pin SOT23 (U5+1) footprint, measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant matte-tin plating. The package supports reflow soldering per JEDEC J-STD-020D (peak 260°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3691IDCKR and MAX9060EXK+T, the MAX9075EUK-T uniquely balances 580ns speed, 3µA power, rail-to-rail output, and ground-sensing inputs - making it the only choice for high-dynamic-range, battery-critical threshold detection where timing and voltage margin are simultaneously constrained.

Availability

MAX9075EUK-T is available at Aetrix Electronics and suitable for battery-powered systems, threshold discriminators, keyless entry sensors, and IR receivers requiring stable component supply across extended production lifecycles.

Supply support for MAX9075EUK-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 power, sensing, and interface applications in industrial, automotive, and consumer markets.

The MAX9075/MAX9077 family was engineered specifically for ultra-low-power, single-supply portable systems demanding fast response, rail-compatible I/O, and minimal board space - targeting IR receivers, battery monitors, and security sensors.

FAQ

What is the maximum operating temperature range for the MAX9075EUK-T?

The MAX9075EUK-T is specified for operation from –40°C to +85°C, with all electrical parameters guaranteed across this range per the datasheet's Electrical Characteristics table. Absolute maximum junction temperature is 150°C, and storage temperature extends to –65°C to +150°C. The device uses BiCMOS process technology to maintain stable 3µA supply current and 580ns propagation delay across the full industrial temperature range.

Does the MAX9075EUK-T require external pull-up resistors on its output?

No, the MAX9075EUK-T does not require external pull-up resistors. Its output stage is a true push-pull driver capable of sourcing and sinking up to 2mA while delivering rail-to-rail swing - meaning it actively drives both HIGH and LOW states. This eliminates pull-up dependencies and reduces BOM count, especially critical in space-constrained portable designs using the MAX9075EUK-T.

Can the MAX9075EUK-T operate with a 2.1V supply and still drive a 2mA load?

Yes, the MAX9075EUK-T maintains rail-to-rail output swing with up to 2mA load at V_CC = 2.1V. Datasheet Figure toc01 confirms VOL ≤ 0.4V at 2mA sink and V_CC = 2.1V across –40°C to +85°C. VOH remains ≥ V_CC – 0.4V under same conditions, ensuring valid logic levels for interfacing with 2.1V–2.5V microcontrollers - a key capability distinguishing the MAX9075EUK-T from many competing micropower comparators.

What is the input common-mode voltage range of the MAX9075EUK-T?

The MAX9075EUK-T has an input common-mode voltage range of –0.2V to V_CC – 1.2V, enabling true ground-sensing operation. This means the IN+ or IN– pin can be held at 0V (or slightly below) while the other remains within the upper limit - essential for detecting signals referenced directly to system ground, such as battery voltage dividers or reed switch outputs. No differential clamp exists between inputs, preserving full rail-to-rail differential tolerance.

How does the MAX9075EUK-T prevent output phase inversion during overdrive?

The MAX9075EUK-T prevents output phase inversion during overdrive by omitting internal differential clamping diodes between IN+ and IN–. Unlike conventional comparators, this architecture allows differential input voltages beyond the common-mode range (e.g., IN+ = V_CC, IN– = GND) without causing erroneous output reversal. This behavior is explicitly guaranteed in the datasheet and enables robust operation in noisy environments where input transients exceed rail limits - a confirmed feature of the MAX9075EUK-T.