Analog Devices Inc./Maxim Integrated MAX6717UKRVD3+T

Overview

MAX6717UKRVD3+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, and open-drain active-low RST output. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and supports manual reset input (MR) with internal 50kΩ pullup. Used in multivoltage embedded systems requiring reliable power-on reset and brownout detection.

For engineers reviewing the MAX6717UKRVD3+T datasheet, MAX6717UKRVD3+T pinout, MAX6717UKRVD3+T application, or MAX6717UKRVD3+T equivalent, key selection criteria include dual-supply monitoring range, 210ms reset timeout, open-drain RST output logic, MR input compatibility with TTL/CMOS, and guaranteed operation at VCC ≥ 0.8V - all critical for low-voltage industrial and portable equipment designs.

Technical Context

The MAX6717UKRVD3+T integrates two independent voltage comparators with factory-trimmed thresholds (VTH1 and VTH2), a reset timeout timer (210ms min), and a manual reset input with glitch rejection (100ns). Its open-drain RST output is referenced to VCC1 and asserts low when either supply falls below its threshold or MR is pulled low.

It operates across -40°C to +85°C, draws only 14µA typical supply current at 3.6V, and features immunity to short VCC transients. The device requires no external components for basic supervision and maintains reset validity even as VCC1 or VCC2 drops to 0.8V - enabling robust reset behavior during deep brownout conditions.

Key Specifications

Pinout & Package

MAX6717UKRVD3+T uses a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in portable and industrial equipment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6715UTLTD3-T, MAX6717UKRVD3+T reduces footprint and pin count while retaining identical dual-supply monitoring and timeout - ideal for space-constrained designs. Against TPS3808G18DBVR, it adds essential VCC2 supervision at modest IQ increase, making it the only viable option for multivoltage SoC power sequencing.

Availability

MAX6717UKRVD3+T is available at Aetrix Electronics and suitable for industrial PLCs, portable medical monitors, network edge routers, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MAX6717UKRVD3+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, and communications markets.

The MAX6715–MAX6729 family delivers ultra-low-voltage dual/triple supervisory circuits targeting space- and power-sensitive embedded systems requiring precise, reliable power-on reset and brownout detection.

FAQ

What is the reset timeout period for MAX6717UKRVD3+T?

The MAX6717UKRVD3+T has a minimum reset timeout period of 210ms, as indicated by the "D3" suffix in its part number per Maxim's Reset Timeout Period Suffix Guide. This timeout begins when all monitored supplies rise above their thresholds and ensures the microprocessor completes initialization before reset release.

Does MAX6717UKRVD3+T support monitoring a third voltage rail?

No, MAX6717UKRVD3+T is a dual-voltage supervisor and does not include RSTIN or PFI inputs. It monitors only VCC1 and VCC2. For triple-voltage supervision, consider MAX6719UKRVD3+T or MAX6723UKRVD3+T, which add an externally adjustable RSTIN input with 626mV internal reference.

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

The MR (Manual Reset) pin on MAX6717UKRVD3+T is an active-low input with an internal 50kΩ pullup to VCC1. Pulling MR low forces an immediate reset assertion, which remains active for the full 210ms timeout period after MR returns high - enabling hardware-triggered recovery without software intervention.

Can MAX6717UKRVD3+T operate with VCC1 = 1.8V and VCC2 = 0.9V simultaneously?

Yes, MAX6717UKRVD3+T is fully specified to monitor VCC1 from 1.8V to 5.0V and VCC2 from 0.9V to 3.3V concurrently. Its internal circuitry guarantees valid reset output logic down to VCC1 or VCC2 = 0.8V, making it suitable for modern low-voltage SoC power domains including 1.8V I/O and 0.9V core rails.

Is MAX6717UKRVD3+T RoHS-compliant and lead-free?

Yes, MAX6717UKRVD3+T is lead-free and RoHS-compliant, as confirmed by the "+T" suffix in its part number - which Maxim specifies denotes lead-free packaging. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards.