Analog Devices Inc./Maxim Integrated MAX6717UKSVD3-T

Overview

MAX6717UKSVD3-T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 5-pin SOT23 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, open-drain active-low RST output, manual reset input, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V. It ensures reliable power-on reset and brownout detection in multivoltage embedded systems.

For engineers reviewing the MAX6717UKSVD3-T datasheet, MAX6717UKSVD3-T pinout, MAX6717UKSVD3-T application, or MAX6717UKSVD3-T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), ultra-low 14µA supply current at 3.6V, immunity to sub-20µs VCC transients, and compatibility with 1.8V/3.3V core-I/O rail architectures.

Technical Context

The MAX6717UKSVD3-T integrates two independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a reset timeout timer (210ms min), and a manual reset input with 50kΩ internal pullup to VCC1. Its open-drain RST output requires an external pullup and asserts low when either supply falls below its threshold or MR is pulled low.

It operates across -40°C to +85°C with guaranteed reset assertion down to VCC1 or VCC2 = 0.8V, uses BiCMOS process (1072 transistors), and features 20ppm/°C reset threshold tempco and 0.5% hysteresis referenced to typical VTH. No watchdog, power-fail, or RSTIN functionality is included.

Key Specifications

Pinout & Package

MAX6717UKSVD3-T is housed in a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm), surface-mount, lead-free compatible. Pin 1 is marked with dot; pin numbering follows standard SOT23 convention (counterclockwise from mark).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3808G33DBVR and ADM6717AKSZ-REEL7, the MAX6717UKSVD3-T uniquely delivers dual-rail monitoring with open-drain RST, 14µA IQ, and guaranteed 0.8V reset validity-making it optimal for space-constrained, multivoltage industrial designs where reset net flexibility and brownout robustness are critical.

Availability

MAX6717UKSVD3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, telecom line cards, medical handheld diagnostics, and automotive infotainment modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6717UKSVD3-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, communications, computing, and consumer markets.

The MAX6715–MAX6729 family was designed specifically for compact, multivoltage embedded systems needing precise, low-power, dual- or triple-supply supervision with minimal external components.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6717UKSVD3-T?

The MAX6717UKSVD3-T has factory-trimmed reset thresholds of 4.625V for VCC1 and 3.075V for VCC2, with ±1.5% total accuracy over -40°C to +85°C. These values are encoded in the "SV" suffix per Maxim's Reset Voltage Threshold Suffix Guide and confirmed in the Electrical Characteristics table. The MAX6717UKSVD3-T does not support adjustable thresholds or RSTIN/PFI/WDI functions.

Does the MAX6717UKSVD3-T include a watchdog timer or power-fail functionality?

No, the MAX6717UKSVD3-T does not include watchdog timer (WDI), power-fail input/output (PFI/PFO), or adjustable RSTIN monitoring. Per the Selector Guide, MAX6717 variants are dual-supply supervisors with manual reset only. Watchdog and PFI features appear only in MAX6721–MAX6729 parts. The MAX6717UKSVD3-T provides only VCC1/VCC2 monitoring, MR input, and open-drain RST output.

What is the reset timeout period for the MAX6717UKSVD3-T and how is it set?

The MAX6717UKSVD3-T has a minimum reset timeout period of 210ms, set by the "D3" suffix per Maxim's Reset Timeout Period Suffix Guide. This value is fixed and factory-programmed; no external capacitor or resistor adjusts it. The timeout begins when VCC1 and VCC2 rise above their thresholds and ensures the microprocessor completes initialization before reset deassertion.

Can the MAX6717UKSVD3-T operate with supply voltages below 1.0V?

Yes-the MAX6717UKSVD3-T guarantees valid reset output logic state as long as either VCC1 or VCC2 remains above 0.8V. This is explicitly stated in the General Description and Absolute Maximum Ratings. Below 0.8V, reset behavior is not specified. The device draws only 14µA at 3.6V and maintains threshold accuracy down to the 0.8V floor, making it suitable for deep-brownout detection scenarios.

Is the manual reset input (MR) of the MAX6717UKSVD3-T internally pulled up, and what is its voltage threshold?

Yes, the MR pin of the MAX6717UKSVD3-T includes an internal 50kΩ pullup resistor to VCC1. Its logic threshold is defined as VIL ≤ 0.3 × VCC1 and VIH ≥ 0.7 × VCC1, per the Electrical Characteristics table. A momentary switch from MR to GND generates a valid reset pulse; no external pullup is needed. MR pulse width must exceed 1µs, and the input rejects glitches <100ns.