Analog Devices Inc./Maxim Integrated MAX6717UKWGD3+T

Overview

MAX6717UKWGD3+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 5-pin SOT23 package, monitoring VCC1 (primary supply) and VCC2 (secondary supply) with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 210ms minimum reset timeout, open-drain active-low RST output, and manual reset input. It ensures reliable system boot and brownout recovery in low-power embedded systems.

For engineers reviewing the MAX6717UKWGD3+T datasheet, MAX6717UKWGD3+T pinout, MAX6717UKWGD3+T application, or MAX6717UKWGD3+T equivalent, this page delivers verified electrical specs, validated pin functions, confirmed dual-supply monitoring behavior, and real-world design context for telecom, industrial, and portable equipment power sequencing.

Technical Context

The MAX6717UKWGD3+T integrates two independent voltage comparators with ±1.5% threshold accuracy over temperature, each feeding a shared reset timeout timer. Its open-drain RST output asserts low when either VCC1 falls below 4.625V or VCC2 drops below 3.075V, and remains asserted for ≥210ms after both supplies recover.

It features an internal 50kΩ pull-up on MR, supports reset assertion via manual switch or logic signal, guarantees valid reset state down to VCC1 or VCC2 = 0.8V, and draws only 14µA typical supply current at 3.6V - enabling use in battery-critical applications.

Key Specifications

Pinout & Package

MAX6717UKWGD3+T is housed in a 5-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts. Pin 1 is marked with a dot; device orientation follows JEDEC MO-178AB standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6717UKWGD3+T, MAX6716UTLTD3-T offers push-pull drive for simpler interfacing but sacrifices open-drain flexibility, while TPS3808G33DBVR reduces power consumption significantly but abandons dual-supply capability entirely - making MAX6717UKWGD3+T the sole fit for space-constrained dual-rail designs needing manual reset and guaranteed 0.8V operation.

Availability

MAX6717UKWGD3+T is available at Aetrix Electronics and suitable for telecom line cards, industrial PLC modules, portable medical sensors, set-top boxes, and battery-operated equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6717UKWGD3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.

The MAX6715–MAX6729 family was designed specifically for ultra-low-voltage, dual/triple-supply microprocessor supervision in size- and power-sensitive embedded systems - emphasizing precision threshold accuracy, minimal quiescent current, and robust reset timing under brownout conditions.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6717UKWGD3+T?

The MAX6717UKWGD3+T has factory-trimmed reset thresholds of 4.625V for VCC1 (primary supply) and 3.075V for VCC2 (secondary supply), with ±1.5% tolerance over the full -40°C to +85°C operating range. These values are encoded in the "WG" suffix per Maxim's Reset Voltage Threshold Suffix Guide and are not adjustable.

Does the MAX6717UKWGD3+T support manual reset functionality, and how is it implemented?

Yes, the MAX6717UKWGD3+T includes an active-low manual reset input (MR) with an internal 50kΩ pull-up resistor to VCC1. Pulling MR low for ≥1µs forces RST assertion for the full 210ms timeout period. The pin accepts TTL/CMOS logic levels and requires no external components for basic switch-based reset implementation.

What is the reset output type and drive capability of the MAX6717UKWGD3+T?

The MAX6717UKWGD3+T features an open-drain active-low RST output referenced to VCC1. It sinks ≥1.2mA at VCC1 ≥ 2.7V (VOL ≤ 0.3V) and exhibits ≤0.5µA leakage when deasserted. An external pull-up resistor is required - typically to VCC1 or another logic rail - to define the high-state voltage.

Can the MAX6717UKWGD3+T operate reliably when VCC1 or VCC2 drops below 1.0V?

Yes, the MAX6717UKWGD3+T guarantees correct RST logic state down to VCC1 or VCC2 = 0.8V. This ensures deterministic reset behavior during deep brownout or slow power-down sequences where supply rails decay gradually - a key reliability feature absent in many competing supervisors.

What is the supply current consumption of the MAX6717UKWGD3+T across its operating voltage and temperature range?

The MAX6717UKWGD3+T draws 14µA typical supply current at 3.6V and +25°C, with ICC1 + ICC2 remaining ≤39µA maximum across VCC1/VCC2 = 0.8V–5.5V and -40°C to +85°C. This ultra-low ICC enables deployment in battery-backed or energy-harvesting systems without compromising runtime.