Analog Devices Inc./Maxim Integrated MAX6710QUT-T

Overview

MAX6710QUT-T from Maxim Integrated is a precision quad-voltage microprocessor supervisory IC that monitors up to four supply rails-including VCC and three adjustable inputs-and asserts a single active-low RESET signal if any falls below its threshold. It features factory-trimmed thresholds for 5.0V/3.3V/3.0V/2.5V/1.8V supplies (±5% or ±10%), adjustable monitoring down to 0.62V with 1.5% accuracy, 140ms min reset timeout, and operates from -40°C to +85°C in a 6-pin SOT23 package. It is used in desktop computers and industrial equipment for reliable power-on reset and brownout detection.

For engineers reviewing the MAX6710QUT-T datasheet, MAX6710QUT-T pinout, MAX6710QUT-T application, or MAX6710QUT-T equivalent, key selection considerations include its VCC-powered architecture (IN2 not used as supply), triple adjustable input configuration, 140ms reset timeout, open-drain RESET with 10μA internal pullup to VCC, and guaranteed operation down to IN1/IN2 = 1V or VCC = 2V.

Technical Context

The MAX6710QUT-T uses an internal 0.62V bandgap reference and precision comparators with 0.3% threshold hysteresis to detect undervoltage conditions across four inputs. Unlike standard variants, it derives power exclusively from VCC-not IN2-making VCC unmonitored while IN1, IN3, and IN4 are configured as adjustable-threshold inputs (each referenced to 0.62V).

Its reset logic incorporates a fixed 140ms minimum timeout after all monitored voltages recover, ensuring stable processor initialization. The open-drain RESET output remains valid as long as VCC ≥ 2V, and includes built-in immunity to short-duration supply transients (<100µs at 50mV overdrive), verified across -40°C to +85°C.

Key Specifications

Pinout & Package

Package: 6-pin SOT23-6, surface-mount, RoHS-compliant (lead-free suffix +T available). Footprint compatible with JEDEC MO-178AA outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6710AUT-T, the MAX6710QUT-T provides VCC-powered operation essential for systems where IN2 is unstable or unregulated; compared with TPS3808G33DBVR, it delivers integrated quad supervision in one die - reducing component count, footprint, and inter-channel timing skew.

Availability

MAX6710QUT-T is available at Aetrix Electronics and suitable for desktop computers, industrial PLC controllers, and network attached storage systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX6710QUT-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, designs high-performance analog and mixed-signal semiconductor solutions for industrial, computing, and communications markets.

The MAX6700/MAX6710 family delivers compact, low-power voltage supervision for multi-rail systems - specifically engineered to replace discrete reset circuits and reduce board space in space-constrained computing and industrial control applications.

FAQ

What is the power supply configuration for MAX6710QUT-T?

The MAX6710QUT-T is powered exclusively from the VCC pin (Pin 2) and does not draw power from IN2. VCC must be between 2.0V and 5.5V. IN2 is not used as a supply and is not monitored - this distinguishes MAX6710QUT-T from other MAX6710 variants like AUT-T or BUT-T, which use IN2 as both supply and monitored input. This architecture ensures MAX6710QUT-T remains functional even if IN2 is absent or unstable.

How many voltage rails can MAX6710QUT-T monitor, and what are their configurations?

The MAX6710QUT-T monitors three voltage rails: IN1 (Pin 1), IN3 (Pin 3), and IN4 (Pin 4), all configured as adjustable-threshold inputs referenced to an internal 0.62V comparator threshold. Each accepts an external resistor divider to set custom monitoring points down to 0.62V with 1.5% accuracy. IN2 (Pin 2) is not monitored - it is replaced by VCC as the sole power input. No factory-fixed thresholds are active in MAX6710QUT-T.

What is the reset timeout behavior of MAX6710QUT-T, and how is it triggered?

The MAX6710QUT-T asserts an active-low RESET signal whenever any of IN1, IN3, or IN4 falls below its programmed threshold, and holds RESET low for a guaranteed minimum of 140ms after all three inputs rise above their respective thresholds. This timeout is internally generated and requires no external components. The 140ms period ensures compatibility with x86 and ARM processor reset timing requirements, including those specified in Intel's PCH datasheets and ARM Trusted Firmware boot sequences.

Does MAX6710QUT-T require an external pullup resistor on the RESET pin?

No, MAX6710QUT-T includes a 10μA internal pullup current source connected to VCC on the open-drain RESET pin (Pin 6), eliminating the need for an external pullup in same-rail applications (e.g., RESET interfacing with a 3.3V or 5.0V logic gate). If interfacing with a different logic voltage (e.g., 1.8V), an external pullup to that rail is required - internal circuitry prevents reverse current flow into VCC, preserving supply integrity.

What is the operating temperature range and package type of MAX6710QUT-T?

The MAX6710QUT-T is rated for operation from -40°C to +85°C and is supplied in a 6-pin SOT23-6 package (outline MO-178AA, land pattern 90-0175). It is available in lead-free form (suffix +T) and tape-and-reel packaging only, with a minimum order quantity of 2500 pieces. The small footprint supports high-density PCB layouts in compact computing and industrial modules.