Analog Devices Inc./Maxim Integrated MAX6712TEXS+T

Overview

MAX6712TEXS+T from Maxim Integrated is a precision microprocessor supervisory circuit with active-high push-pull RESET output, designed for reliable power-on and brownout reset assertion in +3.0V digital systems. It features a 2.63V reset threshold (±1.5% over -40°C to +125°C), 140ms minimum reset timeout, 12µA supply current at +25°C, and guaranteed reset validity down to VCC = +1V. Used in portable battery-powered equipment and critical µC-based instrumentation.

For engineers reviewing the MAX6712TEXS+T datasheet, MAX6712TEXS+T pinout, MAX6712TEXS+T application, or MAX6712TEXS+T equivalent, key selection criteria include active-high reset polarity, SC70-4 package compatibility, manual reset input timing (200ns MR-to-reset delay), and immunity to sub-100mV/20µs VCC transients-critical for stable operation in low-voltage embedded control systems.

Technical Context

The MAX6712TEXS+T implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to monitor VCC against a fixed 2.63V threshold. Its internal 20kΩ MR pull-up resistor enables direct switch-to-ground connection without external components.

Reset assertion is latched and held for ≥140ms after VCC rises above threshold or MR deasserts; the push-pull output drives high to 0.8×VCC at 150µA load, ensuring robust interface with µP reset inputs requiring active-high assertion during power-up and brownout recovery.

Key Specifications

Pinout & Package

MAX6712TEXS+T is housed in a 4-pin SC70 package (outline X4-1, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6712TEXS+T, MAX6326UR26+T saves board area but sacrifices MR functionality and reset polarity flexibility, while TPS3808G33DBVR adds watchdog capability at the cost of larger package and incompatible threshold for 3.0V systems.

Availability

MAX6712TEXS+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical µP and µC power monitoring, and intelligent instruments requiring stable component supply across extended temperature ranges.

Supply support for MAX6712TEXS+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 precision analog and mixed-signal ICs for industrial, medical, and communications applications.

The MAX671x family delivers ultra-low-power, high-accuracy supervisory circuits for battery-critical and thermally demanding embedded systems where reset reliability cannot be compromised.

FAQ

What is the reset threshold voltage of the MAX6712TEXS+T and how stable is it over temperature?

The MAX6712TEXS+T has a factory-trimmed reset threshold of 2.63V with ±1.5% tolerance over -40°C to +125°C. Its 30ppm/°C temperature coefficient ensures threshold drift remains within ±15mV across the full operating range, making it suitable for precision 3.0V system monitoring where marginal brownout detection is critical.

Does the MAX6712TEXS+T require external components to operate?

No, the MAX6712TEXS+T requires zero external components for basic operation. Its internal 20kΩ pull-up resistor on the MR pin allows direct connection of a momentary switch to ground, and the active-high push-pull RESET output interfaces directly with µP reset inputs without pull-up resistors. This reduces BOM count and improves long-term reliability in MAX6712TEXS+T-based designs.

How does the MAX6712TEXS+T handle fast transients on the VCC supply line?

The MAX6712TEXS+T incorporates proprietary comparator hysteresis and filtering to reject VCC transients up to 100mV amplitude and 20µs duration without asserting reset. This immunity is verified across temperature and ensures stable operation in noisy environments such as motor-driven controllers or switch-mode power supply proximity-key for reliable MAX6712TEXS+T deployment.

What is the minimum VCC voltage at which the MAX6712TEXS+T guarantees correct reset output behavior?

The MAX6712TEXS+T guarantees valid reset output states down to VCC = +1.0V. Below this, the internal circuitry may not sustain proper logic levels; however, most µPs are nonfunctional below 1.2V, so the MAX6712TEXS+T's guaranteed operation to 1.0V provides sufficient margin for deterministic system shutdown and restart sequencing.

Can the MAX6712TEXS+T be used in place of the MAX6711TEXS+T or MAX6713TEXS+T?

No-MAX6712TEXS+T has an active-high push-pull RESET output, whereas MAX6711TEXS+T is active-low push-pull and MAX6713TEXS+T is open-drain. Swapping them requires PCB modifications: MAX6712TEXS+T cannot drive bidirectional µP reset pins like the MAX6713TEXS+T, and its active-high polarity conflicts with systems expecting active-low assertion. Always verify reset polarity and output structure before substitution.