Analog Devices Inc./Maxim Integrated MAX6830SHUT+

Overview

MAX6830SHUT+ from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring primary VCC (3.08V threshold) and secondary VCC2 (1.313V threshold), with push-pull active-high RESET output, manual reset input, and 1.6s watchdog timer - used in battery-powered embedded controllers requiring reliable brownout detection and system-level reset coordination.

For engineers reviewing the MAX6830SHUT+ datasheet, MAX6830SHUT+ pinout, MAX6830SHUT+ application, or MAX6830SHUT+ equivalent, this page delivers verified electrical parameters, exact pin functions, real-world use cases for multivoltage systems, and two confirmed alternative parts with documented functional differences.

Technical Context

The MAX6830SHUT+ integrates two independent voltage monitors: one factory-trimmed for VCC (3.08V ±3% over –40°C to +125°C) and another for VCC2 (1.313V ±3% over same range), both feeding an OR logic gate that triggers reset assertion on any undervoltage condition. It features a 1.6s watchdog timer cleared by WDI edge transitions and a 140ms minimum reset timeout delay after recovery.

Its push-pull RESET output drives high (VOH ≥ 0.8×VCC at ISOURCE = 200µA) when not asserted and low (VOL ≤ 0.3V at ISINK = 100µA) when asserted, with guaranteed valid operation down to VCC = +1.2V across full temperature range. MR includes internal 50kΩ pullup and supports CMOS-logic-level triggering with 1µs minimum pulse width.

Key Specifications

Pinout & Package

Package: 6-pin SOT23 (U6+1 outline, 21-0058 land pattern), RoHS-compliant, lead-free (+T suffix).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Compared with MAX6827SHUT+, MAX6830SHUT+ adds factory-trimmed VCC2 monitoring for core-rail supervision, while MAX6831SHUT+ trades push-pull drive for open-drain flexibility - making MAX6830SHUT+ optimal for fixed 3.3V/1.2V dual-rail systems requiring minimal external components and deterministic active-high reset signaling.

Availability

MAX6830SHUT+ is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, and intelligent instruments requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for MAX6830SHUT+ 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 connectivity applications, with focus on high-reliability industrial and automotive markets.

The MAX6826–MAX6831 family was engineered specifically for dual-rail microprocessor supervision in space-constrained, battery-sensitive systems - delivering factory-trimmed accuracy, ultra-low current, and integrated watchdog functionality in SOT23 packaging.

FAQ

What is the exact VCC reset threshold voltage for MAX6830SHUT+?

The MAX6830SHUT+ has a factory-trimmed VCC reset threshold of 3.08V, with tolerance of ±3% over the full operating temperature range (–40°C to +125°C). This value is specified in the Electrical Characteristics table under "VCC Reset Threshold (VCC Falling)" for the "T" suffix variant, and applies directly to MAX6830SHUT+ as confirmed by Maxim's Standard Versions Table and Threshold Suffix Guide.

Does MAX6830SHUT+ monitor both primary and secondary supply rails?

Yes, MAX6830SHUT+ monitors two independent supply rails: VCC (primary, 3.08V threshold) and VCC2 (secondary, 1.313V threshold). The VCC2 pin connects directly to a secondary voltage source such as a 1.2V core rail, and its comparator is factory-trimmed - eliminating need for external resistor networks. This dual-monitoring capability is explicitly defined in the Selector Guide and Pin Description sections of the MAX6826–MAX6831 datasheet.

What type of RESET output does MAX6830SHUT+ provide?

MAX6830SHUT+ provides an active-high push-pull RESET output. When asserted, RESET drives high (VOH ≥ 0.8×VCC at ISOURCE = 200µA); when deasserted, it drives low (VOL ≤ 0.3V at ISINK = 100µA). This differs from open-drain variants like MAX6831SHUT+ and eliminates need for external pullup resistors - confirmed by the Pin Configuration diagram and Electrical Characteristics table for "RESET Output HIGH (Push-Pull Only)".

Can MAX6830SHUT+ operate reliably at low VCC voltages?

Yes, MAX6830SHUT+ is guaranteed to assert valid RESET output down to VCC = +1.2V across the full –40°C to +125°C temperature range. Its internal circuitry remains functional and comparators retain accuracy even as VCC approaches minimum operating voltage - a key specification highlighted in the General Description and Absolute Maximum Ratings sections of the datasheet.

How does the watchdog timer in MAX6830SHUT+ function?

The MAX6830SHUT+ watchdog timer has a nominal timeout period of 1.6s, with ±40% variation over temperature. It is cleared by any rising or falling edge on the WDI pin. If WDI remains static beyond timeout, RESET asserts for 140ms. Leaving WDI unconnected disables the watchdog, as internal circuitry services the timer every ~1.4s - details confirmed in the Watchdog Input section and Typical Operating Characteristics graphs (toc04).