Analog Devices Inc./Maxim Integrated MAX6376XR22

Overview

MAX6376XR22 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 2.20V 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, enabling reliable reset or power-fail signaling in portable medical devices and wearables.

For engineers reviewing the MAX6376XR22 datasheet, MAX6376XR22 pinout, MAX6376XR22 application, or MAX6376XR22 equivalent, key selection criteria include its active-high push-pull output configuration, SC70-3 package footprint, 2.20V trip point with ±2.5% accuracy, immunity to sub-20µs VCC transients, and compatibility with 1.2V–5.5V supply rails.

Technical Context

The MAX6376XR22 integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.20V detection without external components. Its internal hysteresis of 100mV prevents chatter during slow VCC decay.

It operates across -40°C to +85°C with propagation delay under 20µs (falling edge) and maintains valid output state down to 1V VCC. The push-pull output drives high (VOH ≥ 0.8×VCC at 500µA) and low (VOL ≤ 0.4V at 1.2mA), eliminating need for external pull-up resistors.

Key Specifications

Pinout & Package

MAX6376XR22 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs. Pin 1 = GND, Pin 2 = OUT, Pin 3 = VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB22DPWR and APX803S-22SA-7, the MAX6376XR22 offers superior temperature stability (40ppm/°C), guaranteed 1V operation, and SC70-3 footprint for highest-density layouts - making it optimal for space- and reliability-critical portable designs.

Availability

MAX6376XR22 is available at Aetrix Electronics and suitable for battery-powered wearables, portable medical sensors, and low-power IoT end nodes requiring stable component supply and long-term lifecycle support.

Supply support for MAX6376XR22 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 semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and consumer markets.

The MAX6375–MAX6380 family was engineered for ultra-low-power supply monitoring in portable and battery-critical systems, delivering precision voltage detection with minimal board space and zero external components.

FAQ

What is the exact reset threshold voltage of the MAX6376XR22 and how stable is it over temperature?

The MAX6376XR22 has a factory-trimmed nominal reset threshold of 2.20V, with guaranteed accuracy of ±2.5% over the full -40°C to +85°C operating range. Its temperature coefficient is 40ppm/°C, meaning threshold drift is limited to approximately ±11mV across the entire temperature span - sufficient for robust operation on 2.4V–2.5V system rails.

Does the MAX6376XR22 require any external components to function?

No, the MAX6376XR22 requires no external components. Its precision bandgap reference, comparator, and laser-trimmed resistive divider are fully integrated. This eliminates the need for external resistors, capacitors, or calibration circuitry - reducing BOM cost, PCB area, and design validation effort for the MAX6376XR22.

What is the output configuration of the MAX6376XR22 and how does it interface with a microcontroller?

The MAX6376XR22 features an active-high push-pull output. When VCC drops below 2.20V, OUT asserts logic high; otherwise, it drives low. This allows direct connection to standard µP reset inputs without pull-up resistors. The output sources 500µA (VOH ≥ 0.8×VCC) and sinks 1.2mA (VOL ≤ 0.4V), ensuring compatibility with most 1.8V–3.3V logic families in the MAX6376XR22 application.

Can the MAX6376XR22 operate reliably at very low supply voltages?

Yes, the MAX6376XR22 is guaranteed to maintain correct output logic state down to VCC = 1.0V. This enables reliable brown-out detection even during deep battery discharge in applications like coin-cell-powered sensors, where voltage may fall below 2.0V before shutdown - a key differentiator of the MAX6376XR22 versus many competing detectors.

What package options are available for the MAX6376XR22 and what are their key mechanical differences?

The MAX6376XR22 is offered exclusively in the SC70-3 package (2.0mm × 2.1mm × 0.95mm body, 0.65mm lead pitch). Unlike the SOT23-3 variant (e.g., MAX6376UR22), the SC70-3 provides 30% smaller footprint and lower thermal resistance - critical for ultra-compact wearable and hearing aid designs where board space is at a premium for the MAX6376XR22.