Analog Devices Inc./Maxim Integrated MAX6717UKRVD3+

Overview

The MAX6717UKRVD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in a 5-pin SOT23 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 210ms minimum reset timeout, and open-drain active-low RST output. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and draws only 14µA typical supply current at 3.6V - used in multivoltage embedded systems requiring reliable power-up sequencing and brownout protection.

For engineers reviewing the MAX6717UKRVD3+ datasheet, MAX6717UKRVD3+ pinout, MAX6717UKRVD3+ application, or MAX6717UKRVD3+ equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% typical), immunity to sub-20µs VCC transients, manual reset input with internal 50kΩ pullup, guaranteed operation over –40°C to +85°C, and compatibility with low-power portable and industrial control designs.

Technical Context

This device implements two independent voltage comparators with precision internal references (VTH1 and VTH2), each feeding a shared reset timeout timer. The reset logic asserts RST low when either monitored supply falls below its threshold and holds it for ≥210ms after all supplies recover - preventing premature release during marginal power conditions.

It features a dedicated manual reset input (MR) with glitch rejection (100ns), internal 50kΩ pullup to VCC1, and 200ns MR-to-reset delay. No watchdog, power-fail, or RSTIN inputs are present - confirmed by Selector Guide and Pin Description tables for MAX6717 series.

Key Specifications

Pinout & Package

Package: 5-pin SOT23 (2.9mm × 1.6mm × 1.1mm), surface-mount, lead-free (+ suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6715UTLTD3-T, the MAX6717UKRVD3+ saves one PCB pad and reduces assembly complexity with its 5-pin footprint while delivering identical dual-supply supervision performance; versus TPS3808G18DBVR, it provides essential second-rail monitoring and manual reset - critical for systems with split-domain power architectures.

Availability

MAX6717UKRVD3+ is available at Aetrix Electronics and suitable for computers/servers, portable/battery-operated equipment, and industrial equipment requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.

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 power, sensing, connectivity, and security applications - with emphasis on high-reliability, low-power, and small-footprint solutions.

The MAX6715–MAX6729 family delivers ultra-low-voltage dual/triple supervisory circuits optimized for multivoltage embedded systems where space, power, and reset accuracy are critical - targeting portable, industrial, and telecom infrastructure designs.

FAQ

What is the reset timeout period of the MAX6717UKRVD3+?

The MAX6717UKRVD3+ has a minimum reset timeout period of 210ms, as indicated by the "D3" suffix in its part number. This timeout begins after VCC1 and VCC2 rise above their respective reset thresholds and ensures the reset signal remains asserted long enough for complete system initialization. The value is factory-trimmed and guaranteed over the full –40°C to +85°C temperature range, with typical variation less than ±10%.

Does the MAX6717UKRVD3+ support triple-voltage monitoring?

No, the MAX6717UKRVD3+ is a dual-voltage supervisor only. It monitors VCC1 and VCC2 but does not include RSTIN, PFI, or WDI inputs - confirmed by the Selector Guide and Pin Configuration table. Triple-monitoring variants (e.g., MAX6719/MAX6720) use different pinouts and part numbering. Using MAX6717UKRVD3+ for three-rail systems requires an additional supervisor or discrete solution.

What are the voltage threshold options for VCC1 and VCC2 on the MAX6717UKRVD3+?

The MAX6717UKRVD3+ uses factory-trimmed thresholds defined by its full part number suffixes - "RVD3" indicates VTH1 = 3.075V (R) and VTH2 = 3.075V (V), per the Reset Voltage Threshold Suffix Guide. VTH1 options range from 1.58V to 4.63V; VTH2 from 0.79V to 3.08V. These values are laser-trimmed and specified with ±1.5% typical accuracy over temperature.

Is the MAX6717UKRVD3+ compatible with 1.2V core supplies?

Yes - the MAX6717UKRVD3+ supports VCC2 monitoring down to 0.9V, making it suitable for 1.2V core supplies. Its VTH2 threshold can be selected as low as 0.79V (suffix "E"), ensuring reliable detection of brownout on sub-1.8V rails. The device guarantees valid reset output even when VCC2 = 0.8V, providing margin for noisy or poorly regulated low-voltage domains.

What is the function of the MR pin on the MAX6717UKRVD3+?

The MR (Manual Reset) pin on the MAX6717UKRVD3+ is an active-low input with internal 50kΩ pullup to VCC1. Pulling MR low for ≥1µs forces an immediate reset assertion, which persists for the full 210ms timeout period after MR returns high. It supports TTL/CMOS logic levels and requires no external components - enabling simple pushbutton reset implementation with a momentary switch to GND.