Analog Devices Inc./Maxim Integrated MAX6717UKTZD6+T

Overview

MAX6717UKTZD6+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, 560ms 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 battery-powered telecom and industrial control systems requiring reliable power-up sequencing and brownout detection.

For engineers reviewing the MAX6717UKTZD6+T datasheet, MAX6717UKTZD6+T pinout, MAX6717UKTZD6+T application, or MAX6717UKTZD6+T equivalent, key selection criteria include dual-supply monitoring capability, guaranteed reset validity below 1V, 560ms timeout period, open-drain RST output compatibility with bidirectional µP reset pins, and SOT23-5 footprint constraints for space-constrained designs.

Technical Context

The MAX6717UKTZD6+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. Its internal timer enforces a fixed 560ms (min) reset hold time after all monitored supplies recover, with no watchdog or manual reset input - distinguishing it from variants like MAX6721/MAX6722.

It features an internal 50kΩ pullup on MR (though unused per ordering code), operates over –40°C to +85°C, and maintains functional reset logic state even as VCC1 or VCC2 decays to 0.8V - enabling robust operation during deep brownouts common in portable equipment powered by Li-ion or coin-cell sources.

Key Specifications

Pinout & Package

MAX6717UKTZD6+T is housed in a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts. Pin 1 is marked with a dot; device orientation follows JEDEC MO-178AB standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6717UKTZD6+T, MAX6316LUK46D3+T reduces functionality to single-rail supervision with shorter timeout, while TPS3808G33DBVR trades dual monitoring for sub-2µA supply current and push-pull output - making MAX6717UKTZD6+T uniquely suited for compact dual-rail systems needing guaranteed 0.8V reset validity and 560ms hold time.

Availability

MAX6717UKTZD6+T is available at Aetrix Electronics and suitable for battery-operated telematics units, industrial PLC I/O modules, and medical point-of-care monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6717UKTZD6+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) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and communications markets.

The MAX6715–MAX6729 family delivers ultra-low-voltage dual/triple supervisory circuits targeting space- and power-constrained embedded systems where reliable power-up sequencing and brownout recovery are mission-critical.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6717UKTZD6+T?

The MAX6717UKTZD6+T uses suffix "TZ" to denote factory-trimmed thresholds: VCC1 = 3.075V (±1.5%) and VCC2 = 1.800V (±1.5%). These values are laser-trimmed during production and specified in the Reset Voltage Threshold Suffix Guide - not adjustable externally. The device asserts RST when either supply falls below its respective threshold and holds reset for ≥560ms after recovery.

Does MAX6717UKTZD6+T support manual reset functionality?

Yes, MAX6717UKTZD6+T includes an MR pin (Pin 3) with internal 50kΩ pullup to VCC1, but it is not activated in this variant per the Selector Guide - the MAX6717 series provides manual reset capability in hardware, though the specific MAX6717UKTZD6+T configuration does not require external MR assertion for basic operation. Pulling MR low will still force reset, consistent with the family's behavior.

What is the maximum operating voltage for VCC1 and VCC2 inputs on MAX6717UKTZD6+T?

The MAX6717UKTZD6+T supports VCC1 up to +5.5V and VCC2 up to +5.5V per Absolute Maximum Ratings, though functional operation is specified for VCC1 = 1.8V–5.0V and VCC2 = 0.9V–3.3V. Exceeding 5.0V on VCC1 or 3.3V on VCC2 may cause incorrect threshold comparison or violate recommended operating conditions - always refer to the Electrical Characteristics table for valid range limits.

Can MAX6717UKTZD6+T monitor a third voltage rail?

No, MAX6717UKTZD6+T is a dual-voltage supervisor only - it monitors VCC1 and VCC2 exclusively. Third-rail monitoring (e.g., via RSTIN) is available only in MAX6719/MAX6720/MAX6723–MAX6727 variants. The MAX6717UKTZD6+T pinout lacks RSTIN, WDI, PFI, or PFO connections, confirming its dedicated two-rail architecture per the Selector Guide and Pin Description tables.

What is the reset output type and drive strength of MAX6717UKTZD6+T?

MAX6717UKTZD6+T features an open-drain active-low RST output (Pin 1). It sinks ≥1.2mA at VCC ≥ 2.7V (VOL ≤ 0.3V) and exhibits ≤0.5µA leakage when deasserted. An external pullup resistor (typically 10kΩ to VCC1) is required. This configuration ensures compatibility with bidirectional µP reset pins and avoids contention in multi-master reset schemes.