Analog Devices Inc./Maxim Integrated MAX6710JUT

Overview

MAX6710JUT from Maxim Integrated is a quad-voltage microprocessor supervisory IC that monitors four supply rails-including 3.3V (IN2), 2.5V (IN3), and two adjustable thresholds (IN1, IN4) referenced to 0.62V-with ±1.5% threshold accuracy, -5% tolerance on fixed rails, and 140ms minimum reset timeout. It asserts an active-low open-drain RESET signal when any monitored voltage falls below its threshold, serving as a system integrity guard in multi-rail embedded controllers.

For engineers reviewing the MAX6710JUT datasheet, MAX6710JUT pinout, MAX6710JUT application, or MAX6710JUT equivalent, key selection criteria include its 6-pin SOT23 package, factory-trimmed 3.3V/2.5V monitoring with adjustable 0.62V reference inputs, 35µA quiescent current, immunity to sub-100µs supply transients, and guaranteed operation from -40°C to +85°C.

Technical Context

The MAX6710JUT implements four independent precision comparators tied to an internal 0.62V bandgap reference, with resistor-divider networks for fixed thresholds (3.3V, 2.5V) and direct comparator input access for adjustable rails. Its reset logic includes built-in 0.3% threshold hysteresis and a deterministic 140ms (min) timeout after all voltages recover.

Power is derived solely from IN2 (3.3V), which is both monitored and used as the device supply; RESET remains valid as long as IN2 ≥ 1V. The open-drain output features a 10µA internal pullup to IN2 and supports external pullup to any voltage ≤ 5.5V without reverse current flow.

Key Specifications

Pinout & Package

MAX6710JUT is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts. Pin assignments are standardized across the MAX6700/MAX6710 family and validated per Maxim's official pin configuration diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6710HUT, the MAX6710JUT offers tighter 3.3V detection (-5% vs. -10%), improving system robustness against marginal supply conditions; compared with TPS3808G33DBVR, it integrates three additional monitoring channels and adjustable thresholds, reducing total BOM count and PCB footprint by >60% in multi-rail designs.

Availability

MAX6710JUT is available at Aetrix Electronics and suitable for telecom line cards, industrial PLC controllers, notebook platform power management, and network switch ASIC power validation requiring stable component supply, extended temperature support, and compact supervisory integration.

Supply support for MAX6710JUT 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 markets.

The MAX6700/MAX6710 product line delivers compact, low-power voltage supervision for multi-rail embedded systems-designed specifically to replace discrete resistor-comparator solutions with guaranteed accuracy, temperature stability, and transient immunity.

FAQ

What is the exact reset timeout behavior of the MAX6710JUT?

The MAX6710JUT asserts RESET low immediately when any monitored voltage drops below its threshold and holds RESET low for a minimum of 140ms after all four inputs rise above their respective thresholds. This timeout is guaranteed across -40°C to +85°C and varies from 140ms to 280ms depending on process and temperature. The MAX6710JUT does not use a capacitor-based timer; the delay is internally generated and highly repeatable.

Can the MAX6710JUT monitor a 1.2V supply rail?

Yes, the MAX6710JUT can monitor a 1.2V supply using either IN1 or IN4 as adjustable inputs. With the internal 0.62V reference, a resistor divider (e.g., R1 = 93.5kΩ, R2 = 100kΩ) sets the threshold to 1.2V with <1% error. Input bias current is limited to ±0.4µA on IN1 and ±0.2µA on IN4, allowing high-value resistors that minimize loading on the 1.2V rail.

Does the MAX6710JUT require an external pullup resistor on the RESET pin?

No, the MAX6710JUT includes a 10µA internal pullup to IN2, making an external pullup unnecessary when interfacing with 3.3V logic. If driving a different logic voltage (e.g., 1.8V or 5V), an external pullup may be added-the internal circuitry prevents reverse current flow from the external supply into IN2, preserving supply integrity.

How does the MAX6710JUT handle short voltage transients on monitored inputs?

The MAX6710JUT is specifically designed to reject transients shorter than 100µs on any monitored input, as confirmed by Maxim's Typical Operating Characteristics graph "Maximum IN_ Transient Duration vs. Reset Threshold Overdrive." This immunity prevents false resets caused by switching regulator noise or ESD-induced supply dips, ensuring reliable operation in electrically harsh environments.

What is the top-marking code for the MAX6710JUT in SOT23-6 package?

The MAX6710JUT carries the top-marking code "AAZJ" laser-etched on the package surface, as specified in Maxim's official Selector Guide. This marking uniquely identifies the variant with 3.3V (-5%), 2.5V (-5%), and two adjustable inputs (IN1, IN4), distinguishing it from other MAX6710 suffixes like AAZB (same thresholds, -5% on both) or AAZC (3.3V/1.8V fixed).