Analog Devices Inc./Maxim Integrated MAX6710KUT+T

Overview

MAX6710KUT+T from Analog Devices is a quad-voltage microprocessor supervisory IC that monitors four supply rails-including adjustable thresholds on IN1, IN4, and fixed 3.3V (−10%) on IN2 and 1.8V (−10%) on IN3-and asserts a single active-low open-drain RESET output when any falls below its threshold. It features 140ms minimum reset timeout, 35μA supply current, and operates from −40°C to +105°C in a 6-pin SOT23 package for embedded power integrity in servers and industrial controllers.

For engineers reviewing the MAX6710KUT+T datasheet, MAX6710KUT+T pinout, MAX6710KUT+T application, or MAX6710KUT+T equivalent, this page delivers verified electrical specs, precise pin functions, real-world use cases in telecom and data storage systems, and two validated alternative parts with documented functional and timing differences.

Technical Context

The MAX6710KUT+T implements four independent voltage comparators tied to a NOR gate logic core, triggering RESET upon any undervoltage event. Its internal 0.62V reference enables adjustable thresholds via external resistor dividers on IN1 and IN4, while IN2 and IN3 are factory-trimmed to 3.3V (−10%) and 1.8V (−10%), respectively.

A built-in 140ms (min) timeout timer ensures stable processor reset hold time after all supplies recover; the open-drain RESET output includes a 10μA internal pullup to IN2 and remains valid as long as IN1 or IN2 ≥ 1V. Hysteresis is 0.3% of threshold voltage, enhancing noise immunity without compromising accuracy.

Key Specifications

Pinout & Package

Package: 6-pin SOT23-6, surface-mount, footprint-compatible with industry-standard 0.95mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-voltage supervisory applications.

Compared with MAX6710HUT+T and TPS3808G33DBVR, the MAX6710KUT+T uniquely delivers factory-trimmed 1.8V (−10%) and 3.3V (−10%) monitoring plus two adjustable inputs in one SOT23-6 package-enabling compact, production-ready power sequencing for complex multi-rail SoC designs without external components.

Availability

MAX6710KUT+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and high-end printers requiring stable component supply, extended temperature operation, and quad-rail supervision with minimal external components.

Supply support for MAX6710KUT+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6710KUT+T belongs to the MAX6700/MAX6710 family of ultra-small, low-power supervisory circuits designed specifically for space-constrained, multi-rail embedded systems requiring guaranteed reset timing and high-accuracy voltage monitoring.

FAQ

What is the exact reset threshold voltage for each input on the MAX6710KUT+T?

The MAX6710KUT+T has factory-trimmed thresholds: IN2 = 3.3V (−10%) = 2.97V, IN3 = 1.8V (−10%) = 1.62V. IN1 and IN4 are adjustable with internal 0.62V comparator reference - external resistor dividers set actual thresholds (e.g., R1/R2 = 4.35 sets 3.3V). All thresholds maintain ±1.5% accuracy over −40°C to +105°C.

Does the MAX6710KUT+T require an external pullup resistor on the RESET pin?

No - the MAX6710KUT+T includes a 10μA internal pullup to IN2, sufficient for interfacing with standard 3.3V CMOS logic. An external pullup is only needed when driving logic with a different supply voltage (e.g., 5V or 1.8V), and must be sized to override the internal current without exceeding 20mA sink limit.

Can unused inputs on the MAX6710KUT+T be left floating?

No - unused inputs must not float. For unused adjustable inputs (IN1 or IN4), connect a 1MΩ resistor from the pin to IN2. For unused fixed inputs, tie to a voltage > threshold (e.g., IN3 unused → connect to 3.3V). Floating inputs cause unpredictable comparator behavior and potential false resets.

How does the MAX6710KUT+T handle short voltage transients on monitored rails?

The MAX6710KUT+T rejects transients ≤ 100µs duration due to internal filtering and comparator hysteresis. As shown in Figure MAX6700 toc04, it remains immune to overdrive spikes < 100mV - critical for rejecting switching noise from DC/DC converters without adding external RC filters.

Is the MAX6710KUT+T pin-compatible with other MAX6710 variants like MAX6710AUT+T?

Yes - all MAX6710 variants (including MAX6710KUT+T, MAX6710AUT+T, MAX6710BUT+T) share identical 6-pin SOT23-6 pinout, electrical interface, and timing behavior. Only monitored voltage assignments and tolerances differ per suffix; PCB layout and firmware integration remain unchanged across the family.