Analog Devices Inc./Maxim Integrated MAX6376XR29

Overview

MAX6376XR29 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 the threshold and is used in portable equipment power sequencing and microcontroller reset supervision.

For engineers reviewing the MAX6376XR29 datasheet, MAX6376XR29 pinout, MAX6376XR29 application, or MAX6376XR29 equivalent, key selection criteria include its active-high push-pull output configuration, SC70-3 package, 2.93V trip point, transient immunity, and compatibility with low-voltage microcontrollers requiring clean reset assertion during brownout conditions.

Technical Context

The MAX6376XR29 integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.93V detection without external components. Its internal hysteresis of 100mV prevents chatter during slow VCC decay.

It operates across -40°C to +85°C with ±2.5% threshold accuracy and exhibits propagation delays of 6.3µs (falling) and 9.5µs (rising) at full temperature range. The device ignores transients ≤200µs at 100mV overdrive, ensuring robustness against supply noise.

Key Specifications

Pinout & Package

MAX6376XR29 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs. Pin 1 = OUT (active-high push-pull), Pin 2 = GND, Pin 3 = VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6376XR29, the MAX6376UR29-T offers identical performance in a larger, thermally robust package, while TLV803SDBZR trades push-pull convenience for marginally lower current and mandatory external pull-up-making MAX6376XR29 optimal for new compact, low-component-count designs.

Availability

MAX6376XR29 is available at Aetrix Electronics and suitable for portable medical sensors, wearables with Li+ battery, and industrial IoT edge nodes requiring stable component supply, long-term availability, and lead-free compliance.

Supply support for MAX6376XR29 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 connectivity applications, with emphasis on reliability and integration.

The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in battery-critical systems, delivering factory-trimmed thresholds and sub-µA operation without external components.

FAQ

What is the exact reset threshold voltage of the MAX6376XR29 and how accurate is it over temperature?

The MAX6376XR29 has a factory-trimmed nominal reset threshold of 2.93V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +85°C. This specification is confirmed in Table 1 of the datasheet and applies directly to the MAX6376XR29 variant. The device achieves this stability using a precision bandgap reference and laser-trimmed resistors, eliminating need for external calibration. At +25°C, typical threshold is 2.93V, and deviation remains within ±73mV across temperature.

Does the MAX6376XR29 require any external components to function?

No, the MAX6376XR29 requires zero external components. It integrates a precision bandgap reference, comparator, and trimmed resistor network to set its 2.93V threshold. Its active-high push-pull output drives directly into CMOS inputs without pull-up resistors. This self-contained architecture reduces BOM cost, PCB area, and qualification risk-confirmed in the "Features" and "General Description" sections of the MAX6376XR29 datasheet.

What is the supply current consumption of the MAX6376XR29 and under what conditions is it measured?

The MAX6376XR29 draws just 500nA typical supply current (ICC), specified at TA = +25°C and VCC = 3.0V for VTH ≤2.93V (which applies to MAX6376XR29). This ultra-low quiescent current is guaranteed across -40°C to +85°C and enables multi-year operation in coin-cell–powered devices. The value is explicitly listed in the "Electrical Characteristics" table under the MAX6375/MAX6376/MAX6377 row, confirming it applies to the MAX6376XR29.

How does the MAX6376XR29 handle power-supply transients, and what is its maximum tolerable glitch duration?

The MAX6376XR29 is designed to ignore fast negative-going VCC transients. According to the "Maximum Transient Duration vs. Threshold Overdrive" graph (Figure MAX6375-04), it rejects glitches up to 200µs in duration when the overdrive (VTH – VCC) is 100mV. As overdrive increases, allowable pulse width decreases-e.g., at 200mV overdrive, max duration drops to ~50µs. This transient immunity prevents false resets in electrically noisy environments, a key feature documented for the entire MAX6375–MAX6380 family including MAX6376XR29.

What package type and pin configuration does the MAX6376XR29 use, and how is the output configured?

The MAX6376XR29 is supplied in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm) with top-mark "ADA". Pin 1 is OUT (active-high push-pull), Pin 2 is GND, and Pin 3 is VCC. Its output asserts logic-high when VCC falls below 2.93V and guarantees correct state down to 1V VCC-distinct from the active-low variants (e.g., MAX6375) and open-drain versions (e.g., MAX6377). This configuration is confirmed in the "Pin Description" table and "Pin Configuration" diagram for MAX6376 devices.