Analog Devices Inc./Maxim Integrated MAX6717UKRVD3

Overview

MAX6717UKRVD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC in 5-pin SOT23 package, monitoring VCC1 (primary supply) and VCC2 (secondary supply) with factory-trimmed reset thresholds - specifically 4.625V (VTH1) and 3.075V (VTH2) - and providing 210ms minimum reset timeout. It features open-drain active-low RST output, manual reset input (MR), and guaranteed reset validity down to VCC1 or VCC2 = 0.8V. It is used in multivoltage embedded systems requiring reliable power-on reset and brownout detection.

For engineers reviewing the MAX6717UKRVD3 datasheet, MAX6717UKRVD3 pinout, MAX6717UKRVD3 application, or MAX6717UKRVD3 equivalent, this page delivers verified electrical specs, exact pin functions, real-world use cases in telecom and industrial equipment, and two validated alternative parts with documented functional and timing differences.

Technical Context

The MAX6717UKRVD3 implements dual independent voltage comparators with internal reference trimming, asserting reset when either VCC1 falls below 4.625V or VCC2 drops below 3.075V. Its reset logic remains valid even as VCC1 or VCC2 decays to 0.8V, enabling robust operation during deep brownouts.

It integrates a 210ms (min) reset timeout timer and supports manual reset via MR with 50kΩ internal pullup to VCC1. The open-drain RST output requires an external pullup and drives low for the full timeout after any fault condition clears.

Key Specifications

Pinout & Package

MAX6717UKRVD3 is housed in a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in portable and industrial applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6717UKRVD3, MAX6715UTLTD3-T offers push-pull drive for simpler point-to-point reset routing, while TPS3808G33DBVR trades dual monitoring for lower power and lower cost in single-supply designs - neither is pin-compatible, and both require PCB layout changes.

Availability

MAX6717UKRVD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and portable medical devices requiring stable component supply across extended product lifecycles.

Supply support for MAX6717UKRVD3 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 demanding industrial, automotive, and communications applications.

The MAX6715–MAX6729 family was engineered to replace discrete reset circuits in multivoltage systems, delivering guaranteed reset behavior down to 0.8V with minimal board space and zero external components.

FAQ

What are the exact reset threshold voltages for MAX6717UKRVD3?

The MAX6717UKRVD3 has factory-trimmed reset thresholds of 4.625V (VTH1, VCC1) and 3.075V (VTH2, VCC2), as indicated by the "R" and "V" suffixes per Maxim's Reset Voltage Threshold Suffix Guide. These values are specified at TA = +25°C with ±1.5% tolerance over temperature and supply range.

Does MAX6717UKRVD3 support manual reset, and how is it implemented?

Yes, MAX6717UKRVD3 includes an active-low manual reset input (MR) on Pin 3, featuring a 50kΩ internal pullup to VCC1. Driving MR low for ≥1µs forces reset assertion; the reset remains active for the full 210ms timeout after MR returns high. No external components are required for basic pushbutton implementation.

What is the function of the RST pin on MAX6717UKRVD3, and what drive capability does it have?

The RST pin (Pin 1) on MAX6717UKRVD3 is an open-drain active-low reset output. When asserted, it sinks current with VOL ≤ 0.4V at ISINK = 3.2mA (VCC ≥ 4.5V). It requires an external pullup resistor to VCC1 or another logic rail and supports wired-OR configuration with other open-drain reset sources.

Can MAX6717UKRVD3 monitor a third voltage rail?

No, MAX6717UKRVD3 is a dual-voltage supervisor and does not include RSTIN or PFI inputs. Only MAX6719/MAX6720 and higher variants (e.g., MAX6723–MAX6729) provide a third adjustable monitoring input. For triple-rail monitoring, consider MAX6719UTRVD3-T or MAX6723UTRVD3-T instead.

What is the minimum operating voltage for MAX6717UKRVD3 to guarantee correct reset logic state?

MAX6717UKRVD3 guarantees valid reset output logic (i.e., RST correctly reflects supply status) when either VCC1 or VCC2 remains ≥ 0.8V. This specification ensures reliable operation during deep brownout conditions where conventional supervisors may release reset prematurely.