Analog Devices Inc./Maxim Integrated MAX6411BS42+T

Overview

MAX6411BS42+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector with factory-trimmed 4.20V threshold, ±2.5% accuracy over -40°C to +85°C, 500nA supply current, and guaranteed output validity down to VCC = 1.0V - used for battery and power-supply monitoring in portable electronics.

For engineers reviewing the MAX6411BS42+T datasheet, MAX6411BS42+T pinout, MAX6411BS42+T application, or MAX6411BS42+T equivalent, key selection criteria include reset threshold tolerance, open-drain output compatibility with mixed-voltage logic, manual reset integration, transient immunity, and UCSP-4 footprint constraints.

Technical Context

The MAX6411BS42+T implements a precision bandgap reference comparator with hysteresis of 9.5mV and temperature coefficient of 40ppm/°C, enabling stable detection across industrial temperature ranges. Its internal 50kΩ MR pullup and glitch rejection (100ns) support robust manual reset in noisy environments.

Designed for single-supply operation from 1.2V to 5.5V, it asserts OUT low when VCC falls below 4.20V and maintains valid logic state down to 1.0V - critical for brownout detection during battery discharge. Immunity to short VCC transients is confirmed by maximum transient duration curves up to 200µs at 100mV overdrive.

Key Specifications

Pinout & Package

MAX6411BS42+T is housed in a 4-bump, 2mm × 2mm UCSP (Ultra Compact Silicon Package) with bottom-side solder bumps - requiring reflow assembly per JEDEC J-STD-020 and board-level reliability validation per Maxim's UCSP guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV809K42DBZR and TPS3808G33DBVR, the MAX6411BS42+T uniquely combines 4.2V precision detection, open-drain output, manual reset, and 500nA supply current in a 2mm × 2mm UCSP - making it irreplaceable for compact, battery-critical 4.2V Li-ion systems requiring flexible logic interfacing.

Availability

MAX6411BS42+T is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor nodes, Li-ion battery management systems, and industrial handheld terminals requiring stable component supply and long-term lifecycle support.

Supply support for MAX6411BS42+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX6406–MAX6411 family was designed specifically for ultra-low-power voltage monitoring in space-constrained portable equipment - delivering precision reset functionality without external components or calibration.

FAQ

What is the exact reset threshold voltage of the MAX6411BS42+T?

The MAX6411BS42+T has a factory-trimmed nominal reset threshold of 4.20V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). At +25°C, the typical threshold is 4.20V, with min/max limits of 4.095V and 4.305V respectively - confirmed in Table 1 of the official datasheet.

Does the MAX6411BS42+T support manual reset, and how is it implemented?

Yes, the MAX6411BS42+T includes a dedicated MR (manual reset) input on pin B2. It features an internal 50kΩ pullup resistor to VCC, so the pin can be left unconnected if unused. To assert reset, drive MR low for ≥1µs; the OUT pin will remain low as long as MR is held low - enabling pushbutton or logic-controlled reset without external components.

What package type and dimensions does the MAX6411BS42+T use?

The MAX6411BS42+T uses Maxim's UCSP-4 (Ultra Compact Silicon Package) - a 4-bump, bottom-terminal chip-scale package measuring 2.0mm × 2.0mm with 0.5mm bump pitch. It is not a leaded package; assembly requires solder reflow per JEDEC J-STD-020 and adherence to Maxim's UCSP reliability guidelines for board material and thermal profile.

Can the MAX6411BS42+T operate with supply voltages below 2.5V?

Yes, the MAX6411BS42+T operates from VCC = 1.2V to 5.5V and guarantees valid output logic states down to VCC = 1.0V. This enables reliable brownout detection during deep battery discharge - for example, asserting reset while a Li-ion cell decays from 4.2V to 3.0V and beyond - unlike many comparators that cease functioning below 2.0V.

Is the output of the MAX6411BS42+T compatible with 1.8V logic systems?

Yes, the MAX6411BS42+T features an active-low open-drain OUT pin (pin B1) that can be pulled up to any voltage rail from 1.8V to 5.5V using an external resistor. When asserted, OUT sinks current to GND (VOL ≤ 0.4V at 100µA), ensuring a solid logic low for 1.8V systems; when deasserted, the pin floats, allowing the pullup to define the high level.