Analog Devices Inc./Maxim Integrated MAX6385XS25D6-T

Overview

MAX6385XS25D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.50V ±2.5% reset threshold, and 560ms minimum VCC reset timeout. It monitors +1.8V to +5.0V supply rails in battery-powered and embedded systems, consuming only 3μA at +1.8V and guaranteeing valid reset state down to VCC = 1V. Designed for critical μP power-up sequencing in portable equipment and dual-voltage controllers.

For engineers reviewing the MAX6385XS25D6-T datasheet, MAX6385XS25D6-T pinout, MAX6385XS25D6-T application, or MAX6385XS25D6-T equivalent, this page delivers verified electrical parameters, SC70-4 package layout, manual reset timing behavior (140ms/150ms), ±2.5% threshold accuracy over –40°C to +125°C, and direct alternatives with documented functional alignment.

Technical Context

The MAX6385XS25D6-T implements a precision bandgap-based voltage comparator with internal 1.27V reference for threshold detection, paired with a temperature-stable RC timer for reset timeout generation. Its active-high push-pull output drives high during reset assertion and guarantees logic-level validity across full VCC range (1.0V–5.5V).

It integrates a debounced manual reset input (MR) with 63kΩ internal pullup, supporting TTL/CMOS-compatible triggering and noise immunity via optional 0.1μF capacitor to GND. No auxiliary voltage monitor or open-drain option is present - this variant is strictly single-supply, push-pull, active-high.

Key Specifications

Pinout & Package

MAX6385XS25D6-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. This ultra-compact footprint supports high-density PCB layouts in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6385XS25D6-T, the D3-T variant reduces reset hold time by 420ms - beneficial for latency-sensitive boot paths - while the TPS3808G125DBVR trades lower threshold drift for higher quiescent consumption and reduced timeout flexibility.

Availability

MAX6385XS25D6-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, and automotive body electronics requiring stable component supply with AEC-Q100-aligned qualification.

Supply support for MAX6385XS25D6-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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.

The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed reset supervision for microprocessors operating from 1.8V to 5.0V, targeting space- and energy-constrained embedded systems.

FAQ

What is the exact reset threshold voltage of MAX6385XS25D6-T and how tightly is it specified?

The MAX6385XS25D6-T has a factory-set nominal reset threshold of 2.50V, guaranteed within ±2.5% over the full operating temperature range of –40°C to +125°C. At +25°C, the threshold is specified as 2.50V ±1.5%, tightening to ±2.5% across temperature extremes. This ensures robust brownout detection for 2.5V logic domains without external calibration.

Does MAX6385XS25D6-T support manual reset, and what is its timing behavior?

Yes, MAX6385XS25D6-T includes a debounced manual reset input (MR) with 63kΩ internal pullup to VCC. When MR is pulled low, reset asserts immediately and remains active for the full 560ms VCC reset timeout period after MR is released. The MR pin accepts TTL/CMOS logic levels and requires no external components for basic operation.

What package type and dimensions does MAX6385XS25D6-T use?

MAX6385XS25D6-T uses a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with a 0.65mm pitch. It is RoHS-compliant (+T suffix) and optimized for high-density PCB layouts in portable and automotive applications.

Can MAX6385XS25D6-T operate reliably at very low supply voltages?

Yes, MAX6385XS25D6-T guarantees correct reset output logic state down to VCC = 1.0V. Its internal circuitry remains functional and the active-high push-pull output maintains valid high/low levels throughout the 1.0V–5.5V operating range, enabling safe operation during deep brownout conditions.

Is MAX6385XS25D6-T qualified for automotive applications?

No - MAX6385XS25D6-T carries the "+T" RoHS-compliant package suffix but not the "/V" automotive qualification suffix. For AEC-Q100 Grade 2 (–40°C to +105°C) or Grade 1 (–40°C to +125°C) compliance, select variants such as MAX6385XS25D6/V+T, which undergo additional stress testing and lot traceability per automotive requirements.