Analog Devices Inc./Maxim Integrated MAX6376XR23+

Overview

MAX6376XR23+ 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 2.32V threshold (±2.5% over temperature), 500nA supply current, and guaranteed operation down to 1V VCC. Its role is to assert a logic-high output when VCC falls below the trip point, enabling reliable power-fail detection in portable medical devices and low-power IoT sensors.

For engineers reviewing the MAX6376XR23+ datasheet, MAX6376XR23+ pinout, MAX6376XR23+ application, or MAX6376XR23+ equivalent, key selection criteria include its active-high push-pull output configuration, SC70-3 package footprint, 2.32V threshold accuracy, and immunity to sub-20µs VCC transients - all critical for energy-constrained brownout protection designs.

Technical Context

The MAX6376XR23+ integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.32V detection without external components. Its internal architecture ensures stable threshold behavior across -40°C to +85°C with ±2.5% tolerance and 40ppm/°C tempco.

It employs propagation delay control (typ. 6.3µs at 25°C) and transient rejection logic that suppresses output assertion for negative-going VCC glitches shorter than 100µs at 100mV overdrive - enabling robust operation in noisy power environments.

Key Specifications

Pinout & Package

MAX6376XR23+ is housed in a 3-pin SC70 package (1.25mm × 2.0mm × 0.9mm height). The package supports lead-free assembly and is supplied in tape-and-reel format only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB23DBZR and MAX6376UR23+T, the MAX6376XR23+ uniquely combines SC70-3 miniaturization, documented 100µs transient immunity, and guaranteed 1V operation - making it optimal for next-generation compact, battery-critical systems where layout area and noise resilience are co-constrained.

Availability

MAX6376XR23+ is available at Aetrix Electronics and suitable for portable medical diagnostics, industrial sensor nodes, and smart meter backup power systems requiring stable component supply with long-term lifecycle support.

Supply support for MAX6376XR23+ 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 management, sensing, and interface applications, with emphasis on high reliability and low power.

The MAX6375–MAX6380 family was engineered specifically for ultra-low-power supply monitoring in battery-critical systems, delivering factory-trimmed accuracy and nanoscale quiescent current in miniature packages.

FAQ

What is the exact reset threshold voltage of the MAX6376XR23+?

The MAX6376XR23+ has a factory-trimmed nominal reset threshold of 2.32V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during production and does not require external calibration. The MAX6376XR23+ achieves this precision using an integrated bandgap reference and trimmed resistor network, eliminating variability from external components.

Does the MAX6376XR23+ require external components to operate?

No, the MAX6376XR23+ operates autonomously with no external components required. It integrates a precision bandgap reference, comparator, and factory-laser-trimmed resistor divider to set the 2.32V threshold. Unlike discrete solutions, the MAX6376XR23+ needs only VCC, GND, and the OUT signal connection - reducing BOM count, PCB area, and qualification effort while improving long-term stability.

What is the output configuration of the MAX6376XR23+ and how does it interface with a microcontroller?

The MAX6376XR23+ features an active-high push-pull output, meaning it drives the OUT pin to logic high when VCC falls below 2.32V. This allows direct connection to standard CMOS reset inputs without pull-up resistors. The output can source up to 500µA and sink up to 1.2mA, ensuring compatibility with most microcontrollers' reset pin drive requirements. The MAX6376XR23+ guarantees correct logic state down to 1V VCC, supporting deep brownout detection.

How does the MAX6376XR23+ handle fast voltage transients on the VCC line?

The MAX6376XR23+ incorporates built-in transient immunity that suppresses output assertion for negative-going VCC glitches shorter than 100µs at 100mV overdrive. This behavior is characterized in the "Maximum Transient Duration vs. Threshold Overdrive" graph of the datasheet. As overdrive increases, allowable pulse width decreases - for example, a 200mV dip is rejected if shorter than ~40µs. This prevents false resets in systems with switching regulators or noisy power rails.

What package options are available for the MAX6376XR23+, and is it RoHS-compliant?

The MAX6376XR23+ is supplied exclusively in the SC70-3 package (1.25mm × 2.0mm × 0.9mm), with lead-free termination indicated by the "+" suffix. It is RoHS-compliant and qualified for reflow soldering per JEDEC J-STD-020. Tape-and-reel packaging is standard; no tray or tube options are offered. The SC70-3 footprint is pin-compatible with SOT23-3 layouts but occupies ~40% less board area, making it ideal for space-constrained portable designs.