Analog Devices Inc./Maxim Integrated MAX6385XS41D5-T

Overview

MAX6385XS41D5-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 4.10V reset threshold, 280ms minimum VCC reset timeout, and debounced manual reset input (MR). It monitors single supply voltage (VCC) in battery-powered or embedded systems, guarantees valid reset output down to VCC = 1V, and consumes only 3μA at +1.8V. Designed for critical microprocessor power-up sequencing in portable instrumentation.

For engineers reviewing the MAX6385XS41D5-T datasheet, MAX6385XS41D5-T pinout, MAX6385XS41D5-T application, or MAX6385XS41D5-T equivalent, key selection criteria include reset threshold accuracy (±2.5% over -40°C to +125°C), MR input compatibility with TTL/CMOS logic, guaranteed reset state validity at low VCC, and SC70-4 package footprint constraints.

Technical Context

The MAX6385XS41D5-T implements a precision bandgap-based voltage comparator with ±2.5% threshold tolerance over temperature, paired with a monolithic RC timer for deterministic 280ms reset assertion after VCC recovery. Its internal 63kΩ MR pullup enables direct switch-to-GND interface without external components.

Unlike open-drain variants, this part delivers active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V while maintaining VOL ≤ 0.4V under 3.2mA sink load - enabling direct connection to μP reset inputs without external pullups or level-shifting.

Key Specifications

Pinout & Package

MAX6385XS41D5-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 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 μP reset applications.

Compared with MAX6385XS41D5-T, MAX6326XR41D5+T offers identical timing and threshold but incompatible active-low signaling and no MR function, while TPS3808G33DBVR provides superior accuracy at 3.3V but cannot meet the 4.10V detection requirement or support manual reset - making MAX6385XS41D5-T uniquely suited for 5V brownout supervision with field-service capability.

Availability

MAX6385XS41D5-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6385XS41D5-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, with emphasis on low-power, high-reliability solutions.

The MAX6381–MAX6390 family delivers ultra-low-power μP supervisory circuits optimized for battery-operated equipment and systems requiring guaranteed reset behavior across -40°C to +125°C - addressing critical needs in portable instrumentation and automotive subsystems.

FAQ

What is the exact reset threshold voltage of the MAX6385XS41D5-T?

The MAX6385XS41D5-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 value is confirmed in the Reset Thresholds table of the official datasheet, where suffix "41" corresponds to VTH(nom) = 4.10V, VTH(min) = 4.00V, and VTH(max) = 4.20V.

Does the MAX6385XS41D5-T support manual reset functionality?

Yes, the MAX6385XS41D5-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 280ms timeout period after MR is released. This feature is explicitly documented in the Pin Description and Features sections for MAX6384/MAX6385/MAX6386 variants.

What package type and pin count does the MAX6385XS41D5-T use?

The MAX6385XS41D5-T is packaged in a 4-pin SC70 (outline 21-0098), as confirmed in the Ordering Information table where "XS" denotes the 4-pin SC70 variant. Pin configuration is VCC (pin 1), RESET (pin 2), MR (pin 3), and GND (pin 4), matching the top-view diagram for MAX6384/MAX6385/MAX6386 in the Pin Configurations section.

What is the minimum reset timeout period for the MAX6385XS41D5-T?

The MAX6385XS41D5-T has a minimum reset timeout period of 280ms, indicated by the "D5" suffix in its part number. This is verified in the Reset Timeout Delay table, where D5 maps to 280ms (min) for MAX6381–MAX6389 devices. The timeout begins when VCC rises above the 4.10V threshold and holds RESET high for the full duration.

Can the MAX6385XS41D5-T operate reliably at low supply voltages?

Yes, the MAX6385XS41D5-T guarantees correct reset output logic state down to VCC = 1.0V, as stated in the Electrical Characteristics table and Detailed Description section. Its supply current remains as low as 3μA at +1.8V, and the device operates across 1.0V to 5.5V - enabling robust performance during battery brownout conditions where other supervisors may fail.