Analog Devices Inc./Maxim Integrated MAX6384XS22D3+T

Overview

MAX6384XS22D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 2.19V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum VCC reset timeout, and debounced manual reset input (MR). It operates from 1.0V to 5.5V supply and consumes only 3μA at 1.8V, enabling reliable power monitoring in battery-powered embedded systems.

For engineers reviewing the MAX6384XS22D3+T datasheet, MAX6384XS22D3+T pinout, MAX6384XS22D3+T application, or MAX6384XS22D3+T equivalent, key selection considerations include its 4-pin SC70 package, MR input with internal 63kΩ pullup, guaranteed reset validity down to VCC = 1V, and compatibility with dual-voltage monitoring architectures requiring precise brownout detection.

Technical Context

The MAX6384XS22D3+T implements a precision bandgap-based voltage comparator for VCC monitoring and a digital timeout counter triggered on threshold violation. Its MR input features internal debouncing logic and glitch rejection of 100ns, eliminating external RC filtering in most applications.

This device asserts an active-low push-pull RESET signal when VCC drops below 2.19V or when MR is pulled low; RESET remains asserted for ≥140ms after VCC recovers above threshold or MR is released. Reset output state is guaranteed valid for VCC ≥ 1V, supporting safe initialization in ultra-low-voltage power-rail sequencing.

Key Specifications

Pinout & Package

MAX6384XS22D3+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 MAX6384XS22D3+T, MAX6326XR22D3+T reduces footprint and cost by omitting MR, while TPS3808G18DBVR offers superior accuracy and lower ICC at the expense of external component dependencies and no native MR support.

Availability

MAX6384XS22D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical sensors, automotive body control modules, and dual-voltage microcontroller systems requiring stable component supply with guaranteed long-term availability.

Supply support for MAX6384XS22D3+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, emphasizing low power, high reliability, and small form factor.

The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor supervisory circuits optimized for battery-powered and thermally harsh environments where deterministic reset behavior and minimal quiescent current are critical.

FAQ

What is the exact reset threshold voltage of MAX6384XS22D3+T and how stable is it over temperature?

The MAX6384XS22D3+T has a nominal reset threshold of 2.19V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This stability is achieved through laser-trimmed bandgap references and low-tempco design, making MAX6384XS22D3+T suitable for automotive and industrial applications where thermal drift must be tightly controlled.

Does MAX6384XS22D3+T support manual reset, and what are the electrical characteristics of the MR pin?

Yes, MAX6384XS22D3+T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. The MR pin accepts TTL/CMOS logic levels, requires a minimum 1µs low pulse width, rejects glitches shorter than 100ns, and drives reset for the full 140ms timeout period after release. This eliminates external components in most implementations of MAX6384XS22D3+T.

What package type and dimensions does MAX6384XS22D3+T use, and is it RoHS-compliant?

MAX6384XS22D3+T uses a 4-pin SC70 package (outline 21-0098) measuring 2.0mm × 2.1mm × 0.95mm, with lead-free/RoHS-compliant construction indicated by the "+" suffix. Its compact size and thermal resistance (θJA = 322.6°C/W on multilayer board) make MAX6384XS22D3+T ideal for space- and thermal-constrained portable electronics.

Can MAX6384XS22D3+T operate reliably at very low supply voltages, and what is the minimum functional VCC?

MAX6384XS22D3+T guarantees correct reset assertion and deassertion down to VCC = 1.0V, with full specification compliance from 1.0V to 5.5V. Its internal circuitry remains functional and the RESET output retains valid logic states even as VCC approaches 1V, enabling robust operation during deep brownout conditions where other supervisors may fail - a key reliability feature of MAX6384XS22D3+T.

How does the reset timeout behavior differ between power-on and manual reset events for MAX6384XS22D3+T?

For MAX6384XS22D3+T, both VCC brownout recovery and MR release trigger the same 140ms minimum reset timeout period. Unlike the MAX6390 variant, MAX6384XS22D3+T does not differentiate between VCC and MR timeout durations - the single 140ms timer applies universally, simplifying system timing analysis and ensuring consistent reset hold time regardless of reset source.