Analog Devices Inc./Maxim Integrated MAX6384LT26D2+T

Overview

MAX6384LT26D2+T from Maxim Integrated is a low-power microprocessor supervisory circuit with factory-set 2.63V reset threshold, 20ms minimum VCC reset timeout, active-low push-pull reset output, and debounced manual reset input (MR). It monitors +1.8V to +5.0V supply rails in battery-powered systems, guarantees valid reset down to VCC = 1V, and consumes only 3μA at +1.8V. Used in portable instrumentation and critical μP power sequencing.

For engineers reviewing the MAX6384LT26D2+T datasheet, MAX6384LT26D2+T pinout, MAX6384LT26D2+T application, or MAX6384LT26D2+T equivalent, key selection criteria include its 2.63V ±2.5% threshold accuracy over –40°C to +125°C, MR internal pullup (63kΩ), SC70-4 package footprint, and compatibility with dual-voltage monitoring architectures requiring manual reset assertion.

Technical Context

The MAX6384LT26D2+T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 20ms reset assertion after VCC rises above 2.63V or after MR release.

It features a debounced manual reset input with 1µs minimum pulse width support and 100ns glitch rejection, paired with an active-low push-pull RESET output capable of sinking 3.2mA at VCC ≥ 4.5V while maintaining VOL ≤ 0.4V. Reset state remains valid down to VCC = 1V.

Key Specifications

Pinout & Package

MAX6384LT26D2+T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6384LT26D2+T, MAX6384XS26D2+T offers identical functionality in a mechanically compatible SC70-4 package but demands pinout-aware layout changes, while MAX6326XR26D2+T reduces feature count (no MR, open-drain only) to lower BOM cost at the expense of design flexibility.

Availability

MAX6384LT26D2+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial handheld terminals, and dual-rail embedded controllers requiring stable component supply with automotive-grade temperature support.

Supply support for MAX6384LT26D2+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, serving industrial, automotive, and communications markets.

The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy reset supervision for battery-critical and thermally demanding systems, with variants supporting manual reset, auxiliary voltage monitoring, and multiple output configurations.

FAQ

What is the exact reset threshold voltage of MAX6384LT26D2+T and how stable is it over temperature?

The MAX6384LT26D2+T has a factory-set nominal reset threshold of 2.63V, with guaranteed tolerance of ±2.5% over the full operating range of –40°C to +125°C. Its temperature coefficient is 60ppm/°C, ensuring minimal drift across thermal extremes. This specification is production-tested and documented in the Electrical Characteristics table of the official datasheet.

Does MAX6384LT26D2+T require an external pullup resistor on the RESET pin?

No, MAX6384LT26D2+T does not require an external pullup resistor because it features an active-low push-pull RESET output. The internal driver actively pulls the line low during reset assertion and high during deassertion, eliminating reliance on external components for logic-level definition.

What is the function and electrical behavior of the MR pin on MAX6384LT26D2+T?

The MR pin on MAX6384LT26D2+T is an active-low manual reset input with a 63kΩ internal pullup resistor to VCC. Driving MR low forces a reset; the device holds RESET low for the full 20ms timeout after MR is released. It accepts TTL/CMOS logic levels and rejects glitches shorter than 100ns, enabling robust switch-based or logic-controlled reset initiation.

Can MAX6384LT26D2+T operate reliably at VCC = 1.2V?

Yes, MAX6384LT26D2+T guarantees correct reset output behavior down to VCC = 1.0V, including valid logic states and timing compliance. At 1.2V, the device continues to monitor the supply and assert RESET if voltage falls below 2.63V (though this condition implies out-of-spec operation), and maintains functional integrity per Absolute Maximum Ratings and Electrical Characteristics.

What package type and dimensions does MAX6384LT26D2+T use, and is it RoHS-compliant?

MAX6384LT26D2+T uses a 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with a 0.65mm lead pitch. The "+T" suffix confirms it is lead(Pb)-free and RoHS-compliant, with JEDEC-standard thermal characteristics (θJA = 322.6°C/W on multilayer board).