Analog Devices Inc./Maxim Integrated MAX6376XR29+T

Overview

MAX6376XR29+T from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.93V threshold (±2.5% over temperature), 500nA supply current, and guaranteed operation down to 1V VCC. It asserts a logic-high output when VCC falls below threshold, supporting reliable power-fail detection in portable medical devices and wearables.

For engineers reviewing the MAX6376XR29+T datasheet, MAX6376XR29+T pinout, MAX6376XR29+T application, or MAX6376XR29+T equivalent, key selection criteria include its active-high push-pull output configuration, SC70-3 package footprint, 2.93V trip point with hysteresis, and immunity to sub-20µs VCC transients - critical for low-voltage microcontroller reset supervision.

Technical Context

The MAX6376XR29+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.93V detection threshold. Its active-high push-pull output drives high (VOH ≥ 0.8×VCC) when VCC drops below VTH and low (VOL ≤ 0.4V at 1.2mA sink) otherwise, eliminating external pull-up components.

Designed for robustness in noisy environments, it ignores fast negative-going VCC transients up to 20µs duration when overdriven by 100mV, and maintains ±2.5% threshold accuracy across –40°C to +85°C while consuming only 500nA typical supply current.

Key Specifications

Pinout & Package

MAX6376XR29+T is housed in a 3-pin SC70 package (1.25mm × 0.85mm footprint, 0.55mm height). Pin 1 is OUT (active-high push-pull), Pin 2 is GND, and Pin 3 is VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB29DBZR and TPS3801K29DBVR, the MAX6376XR29+T uniquely combines 500nA supply current, active-high push-pull output, and SC70-3 packaging - delivering optimal trade-off between battery longevity, board space, and design simplicity for next-generation wearables.

Availability

MAX6376XR29+T is available at Aetrix Electronics and suitable for battery-powered medical sensors, industrial handheld terminals, smart wearables, and low-power wireless sensor nodes requiring stable component supply and long-term lifecycle support.

Supply support for MAX6376XR29+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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.

The MAX6375–MAX6380 family delivers ultra-low-power voltage supervision for portable and battery-critical systems, with factory-trimmed thresholds and minimal external component requirements to simplify power-rail monitoring.

FAQ

What is the exact reset threshold voltage of the MAX6376XR29+T and how stable is it over temperature?

The MAX6376XR29+T has a nominal reset threshold of 2.93V, with ±2.5% accuracy guaranteed over the full –40°C to +85°C operating range. This stability is achieved using an internal precision bandgap reference and laser-trimmed resistors, eliminating the need for external calibration. The MAX6376XR29+T maintains this tolerance without drift, making it suitable for applications where consistent brown-out detection is critical across environmental extremes.

Does the MAX6376XR29+T require an external pull-up resistor on its output pin?

No, the MAX6376XR29+T does not require an external pull-up resistor because it features an active-high push-pull output stage. When VCC falls below 2.93V, the OUT pin drives high (VOH ≥ 0.8×VCC); when VCC is above threshold, it drives low (VOL ≤ 0.4V at 1.2mA). This eliminates the need for external components, reducing BOM cost and PCB area - a key advantage of the MAX6376XR29+T over open-drain alternatives.

What is the minimum VCC voltage at which the MAX6376XR29+T guarantees correct output logic state?

The MAX6376XR29+T guarantees correct output logic state (i.e., asserted high when VCC < 2.93V, deasserted low otherwise) down to VCC = 1.0V. This extended low-voltage operation allows the MAX6376XR29+T to detect deep battery discharge events that would be missed by higher-VCC-threshold supervisors, improving system reliability in long-life battery applications.

How does the MAX6376XR29+T handle short voltage transients on the VCC line?

The MAX6376XR29+T is specifically designed to ignore fast negative-going VCC transients: it will not assert reset for glitches ≤20µs in duration when the overdrive (VTH – VCC) is 100mV. This transient immunity prevents false resets in electrically noisy environments such as motor-driven or RF-intensive systems - a documented behavior confirmed in the MAX6376XR29+T's Typical Operating Characteristics graphs.

What package type and dimensions does the MAX6376XR29+T use, and is it RoHS-compliant?

The MAX6376XR29+T uses the SC70-3 package (1.25mm × 0.85mm × 0.55mm body size), a space-saving footprint ideal for ultra-compact designs. The "+T" suffix explicitly denotes lead-free, RoHS-compliant packaging per Maxim's ordering convention. This version replaces the legacy "-T" leaded variant and meets global environmental compliance requirements without performance trade-offs.