Analog Devices Inc./Maxim Integrated MAX6717UKVHD3-T

Overview

MAX6717UKVHD3-T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 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, open-drain active-low RST output, and manual reset input - used to ensure reliable power-on reset and brownout protection in battery-powered embedded systems.

For engineers reviewing the MAX6717UKVHD3-T datasheet, MAX6717UKVHD3-T pinout, MAX6717UKVHD3-T application, or MAX6717UKVHD3-T equivalent, key selection criteria include dual-supply monitoring capability, guaranteed reset validity down to VCC = 0.8V, low 14µA typical supply current at 3.6V, and compatibility with manual reset and pushbutton-initiated system recovery.

Technical Context

The MAX6717UKVHD3-T implements independent voltage comparators for VCC1 and VCC2, each with ±1.5% threshold accuracy and 20ppm/°C tempco, asserting reset when either supply falls below its trimmed threshold. It guarantees correct reset logic state as long as VCC1 or VCC2 remains ≥ 0.8V, enabling operation during deep brownout conditions.

Its open-drain RST output requires an external pullup and supports system-level reset coordination across multiple ICs; the internal 50kΩ MR pullup enables direct connection of a momentary switch to GND without external components, and reset remains asserted for ≥210ms after all monitored supplies recover.

Key Specifications

Pinout & Package

MAX6717UKVHD3-T uses a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm) with gull-wing leads, 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 MAX6717UKVHD3-T, MAX6316US29D3-T reduces functionality to single-rail monitoring while retaining identical timeout and package, whereas TPS3808G18DBVR trades dual monitoring and MR support for significantly lower quiescent current - making it viable only in single-supply, energy-critical contexts.

Availability

MAX6717UKVHD3-T is available at Aetrix Electronics and suitable for battery-powered IoT nodes, industrial PLC I/O modules, network router management cards, and medical point-of-care monitors requiring stable component supply across extended production lifecycles.

Supply support for MAX6717UKVHD3-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 precision analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX6715–MAX6729 family was designed specifically for multivoltage embedded systems requiring compact, low-power, factory-calibrated supervision of primary and secondary supply rails - targeting space- and energy-constrained applications.

FAQ

What are the factory-trimmed reset thresholds for MAX6717UKVHD3-T?

The MAX6717UKVHD3-T has VCC1 reset threshold of 4.625V (typ) and VCC2 reset threshold of 3.075V (typ), both factory-trimmed with ±1.5% accuracy over temperature. These values are encoded in the part number suffix "VH" per Maxim's Reset Voltage Threshold Suffix Guide and do not require external resistor networks.

Does MAX6717UKVHD3-T support manual reset, and how is it implemented?

Yes, MAX6717UKVHD3-T includes an active-low manual reset (MR) input with internal 50kΩ pullup to VCC1. Pulling MR to GND forces an immediate reset assertion, which remains active for the full 210ms timeout period after MR returns high. No external components are needed - a simple momentary switch between MR and GND suffices.

What is the reset output type and drive capability of MAX6717UKVHD3-T?

MAX6717UKVHD3-T features an open-drain active-low RST output. It sinks ≥1.2mA at VCC ≥ 2.7V (VOL ≤ 0.3V) and exhibits ≤0.5µA leakage when deasserted. An external pullup resistor is required; typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.

Can MAX6717UKVHD3-T operate reliably during deep brownout conditions?

Yes, MAX6717UKVHD3-T guarantees valid reset output logic state as long as either VCC1 or VCC2 remains ≥ 0.8V. This ensures deterministic reset assertion even during severe supply sag - critical for preserving SRAM contents and preventing undefined MCU states in battery-depleted or faulted systems.

What is the supply current consumption of MAX6717UKVHD3-T across its operating range?

MAX6717UKVHD3-T draws 14µA typical supply current at 3.6V, with total ICC1 + ICC2 ranging from 10µA (VCC1 < 3.6V) to 39µA (VCC1 < 5.5V) over temperature. Its low quiescent current enables multi-year operation on coin-cell batteries and minimizes heat generation in sealed enclosures.