Analog Devices Inc./Maxim Integrated MAX6376XR26+T

Overview

MAX6376XR26+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 2.63V threshold (±2.5% over temperature), 500nA supply current at +25°C, and guaranteed operation down to VCC = 1V. Its primary role is asserting a logic-high reset signal during brownout conditions in portable medical devices and low-power microcontroller supervisory circuits.

For engineers reviewing the MAX6376XR26+T datasheet, MAX6376XR26+T pinout, MAX6376XR26+T application, or MAX6376XR26+T equivalent, key selection criteria include threshold accuracy, ultra-low quiescent current, push-pull output drive capability, and SC70-3 package compatibility with space-constrained PCB layouts.

Technical Context

The MAX6376XR26+T integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.63V detection without external components. Its internal hysteresis of 100mV prevents chatter during slow VCC recovery.

Designed for immunity to fast transients, it ignores negative-going VCC glitches up to 200µs when overdriven by 100mV below VTH. The push-pull output drives high (VOH ≥ 0.8×VCC at 500µA) and low (VOL ≤ 0.4V at 1.2mA) without requiring external pull-up resistors.

Key Specifications

Pinout & Package

MAX6376XR26+T is housed in a 3-pin SC70-3 package (2.0mm × 1.25mm × 0.95mm), optimized for high-density portable PCBs. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC - matching JEDEC MO-203AA outline with lead-free +T suffix.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB26DBZR and TPS3801K26DBVR, the MAX6376XR26+T uniquely combines 500nA IQ, active-high push-pull output, and ±2.5% threshold accuracy in SC70-3 - making it optimal for size- and battery-limited designs where direct MCU interface and long service life are critical.

Availability

MAX6376XR26+T is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor networks, and industrial handheld equipment requiring stable component supply with lead-free compliance and tape-and-reel delivery.

Supply support for MAX6376XR26+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 and mixed-signal ICs for power, sensing, and connectivity applications, with emphasis on ultra-low-power and high-reliability solutions.

The MAX6375–MAX6380 family was engineered specifically for battery voltage supervision in space-constrained, energy-harvesting, and portable electronics - delivering factory-trimmed thresholds and nanoscale quiescent current without external components.

FAQ

What is the exact reset threshold voltage of the MAX6376XR26+T?

The MAX6376XR26+T has a factory-trimmed nominal reset threshold of 2.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the datasheet under suffix R26, and applies specifically to the MAX6376 variant with active-high push-pull output. The MAX6376XR26+T maintains this threshold across its 1.2V to 5.5V VCC range.

Does the MAX6376XR26+T require external components for basic operation?

No, the MAX6376XR26+T requires no external components for core voltage detection functionality. Its precision bandgap reference, comparator, and laser-trimmed resistor network are fully integrated. Unlike open-drain supervisors, its push-pull output eliminates the need for an external pull-up resistor. Only standard PCB layout practices - such as short VCC/GND traces and local decoupling - are recommended for optimal noise immunity in the MAX6376XR26+T design.

What is the supply current specification of the MAX6376XR26+T across temperature?

The MAX6376XR26+T draws 500nA typical supply current at +25°C, rising to 1.0µA maximum over the full -40°C to +85°C range. This ultra-low quiescent current is measured with VCC between 1.2V and 5.5V and is independent of output state. The MAX6376XR26+T maintains sub-1µA operation across temperature, enabling multi-year battery life in always-on applications like smoke detectors and asset trackers.

How does the MAX6376XR26+T handle power supply transients?

The MAX6376XR26+T incorporates built-in transient immunity: it ignores negative-going VCC glitches up to 200µs in duration when the overdrive (VTH – VCC) is 100mV, as shown in Figure 4 of the datasheet. This feature prevents false resets during switching noise or motor-induced dips. The MAX6376XR26+T achieves this through internal filtering and comparator hysteresis, not external capacitors - preserving its zero-component advantage.

What package and marking code does the MAX6376XR26+T use?

The MAX6376XR26+T uses the SC70-3 package (2.0mm × 1.25mm) with lead-free +T suffix, and is marked "ACZ" on the top surface. This marking is verified in Table 2 of the datasheet for MAX6376_R26-T variants in SC70. The +T designation confirms RoHS-compliant, matte-tin lead finish, and the SC70-3 footprint matches JEDEC MO-203AA for compatible pick-and-place and reflow processes in the MAX6376XR26+T assembly flow.