Analog Devices Inc./Maxim Integrated MAX6717UKZGD3

Overview

The MAX6717UKZGD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC in 5-pin SOT23 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds (VTH1 = 2.250V, VTH2 = 0.765V), 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-on reset and brownout detection.

For engineers reviewing the MAX6717UKZGD3 datasheet, MAX6717UKZGD3 pinout, MAX6717UKZGD3 application, or MAX6717UKZGD3 equivalent, this page delivers verified electrical specs, confirmed pin functions, real-world use cases in telecom and portable equipment, and two validated alternative parts with documented functional differences.

Technical Context

The MAX6717UKZGD3 implements dual independent voltage comparators with internal reference trimming, hysteresis of 0.5% of VTH, and temperature coefficient of 20ppm/°C. Its reset logic asserts RST low when either VCC1 falls below 2.250V (±75mV) or VCC2 drops below 0.765V (±25mV), holding reset for ≥210ms after both supplies recover.

It features manual reset input (MR) with 50kΩ internal pullup to VCC1, glitch rejection of 100ns, and MR-to-reset delay of 200ns. The device operates across –40°C to +85°C and maintains guaranteed reset validity even as VCC1 or VCC2 decays to 0.8V - critical for low-voltage battery-backed systems.

Key Specifications

Pinout & Package

MAX6717UKZGD3 uses a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch). Pin 1 is RST (active-low open-drain reset output), Pin 2 is GND, Pin 3 is MR (manual reset input), Pin 4 is VCC2 (secondary supply input), and Pin 5 is VCC1 (primary supply input).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6717UKZGD3, MAX6715UTLTD3-T adds a second reset output at the cost of larger footprint and higher pin count, while TPS3808G18DBVR reduces complexity and current draw but sacrifices dual-voltage functionality entirely - selection depends on whether secondary rail supervision and open-drain flexibility are mandatory.

Availability

MAX6717UKZGD3 is available at Aetrix Electronics and suitable for telecom infrastructure, portable medical devices, and industrial PLC modules requiring stable component supply, long-term lifecycle support, and guaranteed reset performance across –40°C to +85°C.

Supply support for MAX6717UKZGD3 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, and interface applications - known for high-reliability supervisory, PMIC, and data-conversion solutions.

The MAX6715–MAX6729 family was engineered specifically for multivoltage embedded systems needing compact, low-power, dual- or triple-rail supervision with guaranteed reset validity down to 0.8V - targeting space-constrained industrial and portable designs.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6717UKZGD3?

The MAX6717UKZGD3 has factory-trimmed reset thresholds: VCC1 threshold (VTH1) is 2.250V (min 2.188V, max 2.313V) and VCC2 threshold (VTH2) is 0.765V (min 0.738V, max 0.790V). These values are defined by the "ZG" suffix per Maxim's Reset Voltage Threshold Suffix Guide and are measured under standard conditions (TA = +25°C, VCC1/VCC2 ≥ 0.8V). The MAX6717UKZGD3 guarantees these thresholds over –40°C to +85°C with ±0.5% hysteresis and 20ppm/°C tempco.

Does the MAX6717UKZGD3 support manual reset, and how is it implemented?

Yes, the MAX6717UKZGD3 supports manual reset via Pin 3 (MR), an active-low input with internal 50kΩ pullup to VCC1. Pulling MR low for ≥1µs forces RST low for the full reset timeout period (210ms min) after MR returns high. The MAX6717UKZGD3 specifies MR input voltage thresholds as 0.3×VCC1 (VIL) and 0.7×VCC1 (VIH), with 100ns glitch rejection and 200ns MR-to-RST delay. No external components are required - MR can be driven directly by a momentary switch to GND.

What is the reset output type and drive capability of the MAX6717UKZGD3?

The MAX6717UKZGD3 features an open-drain active-low RST output (Pin 1) that sinks up to 3.2mA when VCC1 ≥ 4.5V and VOL ≤ 0.4V. It does not provide push-pull or active-high output variants - unlike some members of the MAX6715–MAX6729 family. This open-drain configuration allows wire-OR with other reset sources and level-shifting via external pullup. The MAX6717UKZGD3 requires an external pullup resistor (typically 10kΩ to VCC1 or another rail) to define the high-state voltage.

Can the MAX6717UKZGD3 monitor a third voltage rail?

No, the MAX6717UKZGD3 is a dual-voltage supervisor and does not include RSTIN, WDI, PFI, or other auxiliary inputs required for triple-voltage monitoring. Per Maxim's Selector Guide, only MAX6719/MAX6720 and higher-numbered variants (e.g., MAX6723–MAX6729) support RSTIN for adjustable third-rail supervision. The MAX6717UKZGD3 is strictly limited to VCC1 and VCC2 monitoring - its "17" designation and 5-pin SOT23 package confirm dual-rail functionality without expansion capability.

What is the supply current consumption of the MAX6717UKZGD3 across operating conditions?

The MAX6717UKZGD3 draws 14µA typical supply current at 3.6V (ICC1 + ICC2), with maximum total ICC of 39µA at VCC1 = 5.5V and 28µA at VCC1 = 3.6V. ICC1 dominates at higher VCC1 voltages (10–15µA typ), while ICC2 contributes 3–4µA at VCC2 < 2.75V. Current remains stable across –40°C to +85°C per Typical Operating Characteristics plots (toc01–toc04), making the MAX6717UKZGD3 suitable for battery-critical applications where consistent low quiescent draw is essential.