Analog Devices Inc./Maxim Integrated MAX6385XS41D2-T

Overview

The MAX6385XS41D2-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.10V reset threshold, 20ms minimum reset timeout, and manual reset input (MR), designed for reliable power-on reset and brownout protection in low-voltage embedded systems operating from +1.8V to +5.0V supply rails.

For engineers reviewing the MAX6385XS41D2-T datasheet, MAX6385XS41D2-T pinout, MAX6385XS41D2-T application, or MAX6385XS41D2-T equivalent, key selection criteria include its guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over –40°C to +125°C, 3μA supply current at +1.8V, 4-pin SC70 package footprint, and MR debounce capability without external components.

Technical Context

The MAX6385XS41D2-T implements a precision voltage comparator monitoring VCC against a fixed +4.10V threshold, with internal timer logic enforcing a 20ms minimum reset assertion period after VCC recovers above threshold. Its active-high push-pull RESET output drives high during fault conditions and deasserts cleanly upon timeout completion.

It integrates a debounced manual reset input (MR) with internal 63kΩ pullup resistor, enabling TTL/CMOS-compatible reset initiation; MR pulse width as short as 1μs reliably triggers reset, and MR-to-RESET delay is 200ns. The device operates across full industrial temperature range (–40°C to +125°C) and guarantees valid logic states down to VCC = 1V.

Key Specifications

Pinout & Package

MAX6385XS41D2-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, with thermal resistance θJA = 322.6°C/W on multilayer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6385XS41D2-T, MAX6326XR41D2+T offers identical threshold and timing but lacks MR and uses open-drain output, while TPS3808G33DBVR targets 3.3V systems and omits manual reset-neither matches the combined 4.10V threshold, 20ms timeout, MR, and active-high push-pull of MAX6385XS41D2-T.

Availability

MAX6385XS41D2-T is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, medical devices, and smart metering applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.

Supply support for MAX6385XS41D2-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 demanding industrial, automotive, and computing applications.

The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed μP supervisory circuits optimized for reliable reset generation in space-constrained, battery-sensitive, and high-temperature embedded systems.

FAQ

What is the exact reset threshold voltage of the MAX6385XS41D2-T?

The MAX6385XS41D2-T has a factory-set nominal reset threshold of +4.10V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This means the actual threshold falls between +4.00V and +4.20V at +25°C, and between +4.00V and +4.20V across temperature extremes per datasheet specifications.

Does the MAX6385XS41D2-T support manual reset functionality?

Yes, the MAX6385XS41D2-T includes a dedicated active-low manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. Driving MR low for ≥1μs forces a reset; the device holds RESET high for the full 20ms timeout after MR is released. No external debounce components are required due to built-in 100ns glitch rejection.

What package type and dimensions does the MAX6385XS41D2-T use?

The MAX6385XS41D2-T is supplied in a lead(Pb)-free, RoHS-compliant 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is documented as 90-0187, and it features thermal resistance θJA = 322.6°C/W on a multilayer PCB per JEDEC JESD51-7.

Can the MAX6385XS41D2-T operate reliably during deep brownout conditions?

Yes, the MAX6385XS41D2-T guarantees correct reset output logic states down to VCC = 1.0V. Its active-high push-pull RESET output remains valid and functional even as supply voltage collapses, ensuring deterministic microprocessor behavior during severe brownout-critical for safety-critical and data-logging applications.

Is the MAX6385XS41D2-T qualified for automotive applications?

The MAX6385XS41D2-T is specified for operation from –40°C to +125°C and is AEC-Q100 qualified (referenced in datasheet Features section). While the specific /V automotive grade variant uses suffix "/V+T", the standard MAX6385XS41D2-T meets automotive ambient temperature and reliability requirements for non-safety-critical body electronics and infotainment subsystems.