Analog Devices Inc./Maxim Integrated MAX6384XS17D1+T

Overview

MAX6384XS17D1+T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 1.67V reset threshold (±2.5% over –40°C to +125°C), 140ms minimum VCC reset timeout, and debounced manual reset input (MR). It monitors single supply voltage in battery-powered embedded systems and guarantees valid reset state down to VCC = 1V.

For engineers reviewing the MAX6384XS17D1+T datasheet, MAX6384XS17D1+T pinout, MAX6384XS17D1+T application, or MAX6384XS17D1+T equivalent, key selection factors include its 4-pin SC70 package, 3μA supply current at 1.8V, ±2.5% threshold accuracy over temperature, and MR input with internal 63kΩ pullup - critical for portable equipment and dual-voltage power monitoring designs.

Technical Context

The MAX6384XS17D1+T implements a precision bandgap-based voltage comparator with hysteresis to detect VCC drops below 1.67V, triggering an active-low push-pull RESET signal that remains asserted for ≥140ms after VCC recovers. Its MR input accepts TTL/CMOS logic levels and features internal debounce via RC filtering, eliminating external components.

It operates across –40°C to +125°C with guaranteed functionality down to VCC = 1V, supports negative-going VCC transient immunity up to 100mV overdrive, and uses BiCMOS process technology for low leakage (<1µA open-drain leakage) and stable tempco (60ppm/°C).

Key Specifications

Pinout & Package

MAX6384XS17D1+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, optimized for space-constrained portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6384XS17D1+T, the D3 variant offers double the reset timeout for slower power rails, while TPS3808G16DBVR trades MR functionality and compact SC70 size for tighter threshold tolerance - making MAX6384XS17D1+T optimal for space-constrained, manually resettable 1.8V systems.

Availability

MAX6384XS17D1+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical μP and μC power monitoring, and intelligent instruments requiring stable component supply across automotive (-40°C to +125°C) temperature range.

Supply support for MAX6384XS17D1+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, sensing, and connectivity applications in industrial, automotive, and computing markets.

The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed reset supervision for battery-critical and thermally demanding embedded systems - specifically engineered for reliable operation in portable, medical, and automotive control units.

FAQ

What is the exact reset threshold voltage of MAX6384XS17D1+T and how accurate is it over temperature?

The MAX6384XS17D1+T has a factory-set reset threshold of 1.67V, specified as ±2.5% over the full operating temperature range of –40°C to +125°C. This accuracy is guaranteed by design and applies to all units without production testing per device. The threshold is derived from a precision bandgap reference with 60ppm/°C tempco, ensuring minimal drift across thermal extremes encountered in automotive and industrial deployments.

Does MAX6384XS17D1+T support manual reset, and what is the internal pullup value on the MR pin?

Yes, MAX6384XS17D1+T includes a debounced manual reset input (MR) pin with an internal 63kΩ pullup resistor to VCC. This allows direct connection of a normally open momentary switch between MR and GND, eliminating external components. The MR pin accepts TTL/CMOS logic levels and features on-chip RC filtering and Schmitt-trigger input to reject noise - a key feature distinguishing MAX6384XS17D1+T from basic reset supervisors lacking MR functionality.

What package type and dimensions does MAX6384XS17D1+T use, and is it RoHS-compliant?

MAX6384XS17D1+T is packaged in a lead(Pb)-free, RoHS-compliant 4-pin SC70 (SOT-323) outline, with package code X4+1, outline number 21-0098, and land pattern 90-0187. Its footprint measures 2.0mm × 2.1mm, height 0.95mm, and thermal resistance θJA = 322.6°C/W on multilayer board - making it ideal for ultra-compact wearable and portable PCBs where space and thermal performance are critical.

Can MAX6384XS17D1+T operate reliably at VCC = 1.0V, and what happens to the RESET output below that?

Yes, MAX6384XS17D1+T guarantees correct RESET output logic state down to VCC = 1.0V - meaning the active-low push-pull output remains functional and valid throughout deep brownout conditions. Below 1.0V, the device ceases operation and RESET state is no longer guaranteed; however, the 1.0V lower limit exceeds most 1.8V logic families' minimum valid input thresholds, ensuring safe MCU reset behavior without external pulldown resistors.

How does the 140ms reset timeout of MAX6384XS17D1+T compare to other variants in the MAX6384 series?

The "D1" suffix in MAX6384XS17D1+T specifies a minimum VCC reset timeout of 140ms, matching the D3 (280ms), D5 (280ms), and D6 (560ms) variants in being one of seven standard delay options. Unlike MAX6390 (which offers split timeouts: 1120ms/140ms), MAX6384XS17D1+T applies the same 140ms period to both VCC recovery and MR release - simplifying timing analysis in systems where consistent reset hold time is required regardless of reset trigger source.