Analog Devices Inc./Maxim Integrated MAX6710MUT

Overview

The MAX6710MUT from Maxim Integrated is a precision quad-voltage microprocessor supervisory circuit in a 6-pin SOT23 package that monitors four independent supply rails-IN1 (adjustable), IN2 = 3.0V, IN3 = 2.5V, and IN4 (adjustable)-with factory-trimmed thresholds and -10% tolerance. It asserts a single active-low open-drain RESET output when any monitored voltage falls below its threshold, with 140ms minimum reset timeout and guaranteed operation down to IN1 ≥ 1V or IN2 ≥ 1V. It is used in industrial equipment and data storage systems requiring reliable multi-rail power monitoring.

For engineers reviewing the MAX6710MUT datasheet, MAX6710MUT pinout, MAX6710MUT application, or MAX6710MUT equivalent, this device supports precise undervoltage detection across mixed-supply systems, offers low 35µA quiescent current, maintains reset validity during brownout conditions, and enables flexible threshold configuration via external resistor dividers on adjustable inputs.

Technical Context

The MAX6710MUT uses an internal 0.62V bandgap reference and four precision comparators with 0.3% typical hysteresis per channel to detect undervoltage events. Its architecture integrates internally trimmed resistor-divider networks for fixed thresholds (3.0V and 2.5V at -10%) and bypasses those networks on adjustable inputs (IN1, IN4) to accept externally scaled voltages down to 0.62V.

Power is derived solely from IN2 (3.0V), eliminating need for separate VCC; RESET remains valid as long as IN1 ≥ 1V or IN2 ≥ 1V. Immunity to short transients (<100µs for >50mV overdrive) is achieved through comparator response timing and built-in glitch rejection logic.

Key Specifications

Pinout & Package

The MAX6710MUT is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and exposed pad not present. Pin 1 is marked by a dot; pin numbering follows standard SOT23 top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6711MUT and TPS3307-33D, the MAX6710MUT uniquely delivers quad monitoring with two adjustable inputs and -10% tolerance on both 3.0V and 2.5V rails - enabling broader undervoltage detection range and greater flexibility in mixed-supply industrial designs without adding external components.

Availability

MAX6710MUT is available at Aetrix Electronics and suitable for industrial PLC power monitoring, data storage RAID controllers, high-end network switch ASIC power, and medical imaging sensor subsystems requiring stable component supply and long-term production continuity.

Supply support for MAX6710MUT 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.

The MAX6710 series belongs to Maxim's µP supervisory product line, designed specifically for compact, low-power, multi-rail voltage monitoring in space-constrained embedded systems where reliability and precision under varying temperature and load conditions are critical.

FAQ

What is the exact threshold voltage for IN2 and IN3 on the MAX6710MUT?

The MAX6710MUT has factory-trimmed thresholds of 2.70V (min), 2.78V (typ), and 2.85V (max) for IN2 (3.0V rail at -10% tolerance) and 2.13V (min), 2.19V (typ), and 2.25V (max) for IN3 (2.5V rail at -10% tolerance). These values are specified over -40°C to +85°C and include hysteresis of 0.3% of VTH. The MAX6710MUT datasheet confirms these limits in the Electrical Characteristics table under "Threshold Voltage".

Can the MAX6710MUT monitor a 1.2V supply, and how is it configured?

Yes, the MAX6710MUT can monitor a 1.2V supply using either IN1 or IN4, both of which feature an internal 0.62V threshold. To monitor 1.2V, connect a resistor divider such that V_TH = 0.62V × (R1 + R2)/R2 = 1.2V - solving gives R1 ≈ 0.94×R2. With ≤100kΩ total resistance, error remains under 1% due to MAX6710MUT's ±0.2µA input bias current. This configuration is validated in the MAX6710MUT application diagram for adjustable thresholds.

What is the minimum valid supply voltage for the MAX6710MUT to assert a functional RESET output?

The MAX6710MUT guarantees RESET functionality as long as either IN1 ≥ 1.0V or IN2 ≥ 1.0V. This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections of the MAX6710MUT datasheet (Note 3). Below 1.0V on both pins, RESET behavior is undefined - making the device suitable for brownout detection down to near-1V operation without losing reset control.

Does the MAX6710MUT require an external pull-up resistor on the RESET pin?

The MAX6710MUT includes a weak internal 10µA pull-up to IN2, so no external pull-up is required when interfacing with 3.0V logic. However, an external pull-up is necessary when driving logic with different voltage levels (e.g., 5V or 1.8V), as the internal pull-up cannot source above IN2. The MAX6710MUT datasheet Figure 3 illustrates this interface method and specifies that external pull-ups up to 5.5V are safe due to reverse-current protection.

How does the MAX6710MUT handle short-duration supply transients?

The MAX6710MUT ignores transients shorter than ~100µs when the voltage dip exceeds 50mV below threshold, as shown in the "Maximum IN_ Transient Duration vs. Reset Threshold Overdrive" graph (MAX6710 toc04). This immunity is achieved via comparator response timing and internal filtering - preventing false resets from switching noise or ESD-induced glitches. This behavior is confirmed across all four inputs and is a specified feature of the MAX6710MUT.