Analog Devices Inc./Maxim Integrated MAX6375UR22+T

Overview

MAX6375UR22+T from Maxim Integrated is an ultra-low-power, active-low voltage detector IC designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.20V threshold (±2.5% over temperature), 500nA supply current, push-pull output, and operates from VCC = 1.2V to 5.5V. It asserts logic-low OUT when VCC falls below threshold - used in portable equipment reset supervision and power-sequencing circuits.

For engineers reviewing the MAX6375UR22+T datasheet, MAX6375UR22+T pinout, MAX6375UR22+T application, or MAX6375UR22+T equivalent, key selection criteria include threshold accuracy, ultra-low quiescent current, SOT23-3 package compatibility, transient immunity, and active-low push-pull output drive capability.

Technical Context

The MAX6375UR22+T integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to set its 2.20V detection threshold without external components. Its internal architecture ensures stable operation down to 1V supply and rejects fast VCC transients via built-in hysteresis (100mV typical) and propagation delay filtering.

This device belongs to the MAX6375–MAX6380 family of single-function voltage detectors differentiated by threshold voltage and output configuration. The MAX6375UR22+T specifically uses an active-low push-pull output (OUT low when VCC < VTH), guaranteed functional from -40°C to +85°C, with ±2.5% threshold accuracy across temperature.

Key Specifications

Pinout & Package

MAX6375UR22+T is housed in a lead-free 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with industry-standard SOT-23 layouts and reflow-solderable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB22DBZR and APX803S-22SA-7, the MAX6375UR22+T uniquely balances ultra-low 500nA current, push-pull drive, and ±2.5% threshold accuracy in a standard SOT23-3 footprint - making it optimal for cost-sensitive, space-constrained portable designs requiring direct MCU reset interface without external components.

Availability

MAX6375UR22+T is available at Aetrix Electronics and suitable for portable medical devices, battery management subsystems, and industrial sensor nodes requiring stable component supply, long-lifecycle support, and RoHS-compliant lead-free packaging.

Supply support for MAX6375UR22+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX6375–MAX6380 series was designed specifically for ultra-low-power voltage monitoring in space- and energy-constrained systems - delivering precision reset supervision without external components or calibration.

FAQ

What is the exact reset threshold voltage of the MAX6375UR22+T and how stable is it over temperature?

The MAX6375UR22+T has a factory-trimmed nominal reset threshold of 2.20V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). Its voltage threshold tempco is 40ppm/°C, meaning drift is less than 10mV across the entire industrial temperature range - sufficient for reliable brown-out detection in battery-powered equipment where supply rails vary with load and temperature.

Does the MAX6375UR22+T require any external components to function?

No, the MAX6375UR22+T requires zero external components. It integrates a precision bandgap reference, comparator, and laser-trimmed resistor network to set its 2.20V threshold. This eliminates the need for external voltage dividers, capacitors, or pull-up resistors - simplifying design, reducing PCB area, and improving long-term reliability compared to discrete supervisor solutions.

What output configuration does the MAX6375UR22+T use, and can it drive a microcontroller reset pin directly?

The MAX6375UR22+T uses an active-low push-pull output. Yes, it can drive a microcontroller reset pin directly without any external pull-up resistor. When VCC falls below 2.20V, OUT goes low (≤0.4V at 100µA sink); when VCC is above threshold, OUT goes high (≥0.8×VCC). This matches standard active-low reset requirements for most ARM, PIC, and RISC-V MCUs.

How does the MAX6375UR22+T handle power supply transients, and what is its maximum tolerable glitch duration?

The MAX6375UR22+T incorporates internal filtering to reject fast negative-going VCC transients. According to its Typical Operating Characteristics, it ignores glitches up to ~200µs in duration when the overdrive (VTH − VCC) is 200mV. As the transient amplitude increases, the maximum allowable duration decreases - ensuring robust operation in electrically noisy environments like those with switching regulators or motor drivers.

Is the MAX6375UR22+T available in both leaded and lead-free packaging, and what does the "+T" suffix indicate?

Yes, the MAX6375UR22+T is supplied in lead-free packaging. The "+T" suffix explicitly denotes RoHS-compliant, lead-free tape-and-reel packaging - replacing the legacy "-T" (leaded) variant. This version meets modern environmental compliance requirements and is compatible with standard Pb-free reflow soldering profiles used in high-volume electronics manufacturing.