Analog Devices Inc./Maxim Integrated MAX6710OUT

Overview

MAX6710OUT from Maxim Integrated is a precision quad-voltage microprocessor supervisory circuit in a 6-pin SOT23 package, monitoring four independent supply rails-including adjustable thresholds down to 0.62V-with ±1.5% accuracy, 140ms minimum reset timeout, and 35µA quiescent current. It asserts a single active-low open-drain RESET output when any monitored voltage falls below its threshold, supporting industrial equipment and networking systems requiring reliable power sequencing and undervoltage detection.

For engineers reviewing the MAX6710OUT datasheet, MAX6710OUT pinout, MAX6710OUT application, or MAX6710OUT equivalent, this device delivers verified quad-supply monitoring with factory-trimmed and adjustable thresholds, guaranteed operation from −40°C to +85°C, and immunity to short-duration supply transients-critical for high-reliability embedded control and telecom infrastructure designs.

Technical Context

The MAX6710OUT uses an internal 0.62V bandgap reference and four precision comparators with 0.3% typical hysteresis per channel to detect undervoltage conditions on IN1, IN3, and IN4 (all adjustable), while IN2 serves as both monitored 3.0V supply and primary power source. Its architecture eliminates external resistors for fixed thresholds but supports flexible scaling via external dividers on adjustable inputs.

RESET assertion is synchronized across all four channels through a NOR-gated logic block and a 200ms nominal timeout timer; the output remains valid as long as IN1 ≥ 1V or IN2 ≥ 1V, enabling robust reset hold during partial supply collapse. The device operates without external pullup in many cases due to its 10µA internal pullup to IN2.

Key Specifications

Pinout & Package

MAX6710OUT 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; orientation follows standard SOT23 top-view labeling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6710OUT, MAX6711OUT offers tighter 1.8V threshold tolerance but reduced margin for supply variation, while TPS3307-33D provides triple monitoring at higher current and lacks native fourth-channel support-making MAX6710OUT uniquely suited for compact, four-rail integrity assurance without design compromise.

Availability

MAX6710OUT is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial PLC controllers, and network switching hardware requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +85°C operation.

Supply support for MAX6710OUT 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 management, sensing, and interface applications, with emphasis on reliability and integration.

The MAX6710OUT belongs to Maxim's µP supervisory product line, engineered specifically for compact, multi-rail power integrity in space-constrained industrial and communications systems where quad monitoring and low quiescent current are essential.

FAQ

What is the exact function of the IN2 pin on the MAX6710OUT?

The IN2 pin on the MAX6710OUT serves a dual role: it is both the monitored 3.0V supply (with −10% factory-trimmed threshold) and the primary power source for the device. The internal RESET pullup connects to IN2, and RESET remains valid as long as IN2 ≥ 1V. This dual functionality eliminates the need for a separate VCC rail while ensuring supervision integrity during partial supply faults.

Can the MAX6710OUT monitor a 5.0V supply?

No, the MAX6710OUT cannot directly monitor a 5.0V supply. Its fixed thresholds are limited to 3.0V (IN2) and 1.8V (IN3); IN1 and IN4 are adjustable but require external resistor dividers. To supervise 5.0V, use IN1 or IN4 with a divider scaled to present 0.62V at the input-for example, R1 = 6.98kΩ and R2 = 1.0kΩ yields ~5.0V threshold with <0.5% error.

What is the minimum valid voltage on IN1 or IN2 to ensure RESET functionality in the MAX6710OUT?

The MAX6710OUT guarantees RESET output validity as long as either IN1 ≥ 1.0V or IN2 ≥ 1.0V. Below these levels, the internal circuitry may not sustain correct logic states. This specification allows continued reset assertion during brownout conditions where one rail collapses while another remains marginally active-enabling graceful system shutdown.

How does the MAX6710OUT handle short voltage transients on monitored inputs?

The MAX6710OUT rejects transients ≤220µs duration when the monitored voltage dips 50mV below threshold, as confirmed by glitch immunity characterization (Figure MAX6710 toc04). This built-in filtering prevents false resets caused by switching noise, ESD coupling, or load-step artifacts-without requiring external RC filters or firmware debouncing.

Is an external pullup resistor required for the RESET output of the MAX6710OUT?

No external pullup resistor is required for the MAX6710OUT RESET output in most cases, because it features a 10µA internal pullup to IN2. However, if interfacing with logic operating at a different voltage (e.g., 5V MCU while IN2 = 3.0V), an external pullup to that logic rail is necessary-and the internal pullup will not interfere due to reverse-current protection circuitry.