Analog Devices Inc./Maxim Integrated MAX6384XS16D1+T

Overview

MAX6384XS16D1+T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 1.58V reset threshold (±2.5% over –40°C to +125°C), 1ms minimum 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 controllers.

For engineers reviewing the MAX6384XS16D1+T datasheet, MAX6384XS16D1+T pinout, MAX6384XS16D1+T application, or MAX6384XS16D1+T equivalent, key selection criteria include its 1.58V V_TH, 1ms t_RP, MR input with internal 63kΩ pullup, guaranteed reset validity down to V_CC = 1V, and 4-pin SC70 package compatibility with space-constrained industrial and portable designs.

Technical Context

The MAX6384XS16D1+T integrates a precision voltage comparator with ±2.5% threshold accuracy across temperature, a monostable timer for fixed 1ms reset assertion after V_CC recovery, and an MR input with 1µs minimum pulse width and 100ns glitch rejection. Its push-pull active-low RESET output drives logic-level loads directly without external pullups.

Unlike open-drain variants, this device guarantees valid logic states for RESET down to V_CC = 1V and features negative-going V_CC transient immunity-rejecting glitches up to ~150µs when overdrive exceeds 100mV-making it suitable for noisy power-rail environments where brownout resilience is critical.

Key Specifications

Pinout & Package

MAX6384XS16D1+T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.25mm × 1.25mm × 0.95mm. This ultra-compact footprint supports high-density PCB layouts in portable and wearable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809S16D1+T, MAX6384XS16D1+T adds MR functionality in a 4-pin SC70 without increasing board area significantly; versus TPS3808G16DBVR, it trades threshold accuracy for lower quiescent current (3μA vs. 12μA) and simpler 4-pin integration-ideal for cost-sensitive, battery-limited designs where ±2.5% V_TH meets system requirements.

Availability

MAX6384XS16D1+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive body control modules, and medical wearable monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6384XS16D1+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 factors.

The MAX6381–MAX6390 family delivers single-supply µP supervisory circuits optimized for low-voltage, low-power embedded systems-specifically targeting applications where battery life, board space, and brownout resilience are critical design constraints.

FAQ

What is the exact reset threshold voltage of MAX6384XS16D1+T and how stable is it over temperature?

The MAX6384XS16D1+T has a factory-set reset threshold of 1.58V, specified with ±2.5% accuracy over the full operating temperature range of –40°C to +125°C. This stability is achieved through laser-trimmed on-chip resistors and a precision bandgap reference, ensuring consistent brownout detection without external calibration-even during automotive cold-cranking or industrial thermal cycling.

Does MAX6384XS16D1+T require an external pullup resistor on its RESET output?

No, MAX6384XS16D1+T does not require an external pullup resistor because it features an active-low push-pull RESET output. The internal driver actively pulls the line low during reset assertion and high during deassertion, delivering rail-to-rail logic levels directly to the microprocessor's reset input-eliminating BOM cost and layout complexity associated with open-drain alternatives.

How does the manual reset (MR) input of MAX6384XS16D1+T behave during power-up and normal operation?

The MR input of MAX6384XS16D1+T is internally pulled up to V_CC with a 63kΩ resistor, so it remains inactive (high) when left unconnected. Driving MR low forces immediate reset assertion, which persists for the full 1ms timeout after MR returns high. This behavior is fully functional even at V_CC = 1.0V, making MAX6384XS16D1+T suitable for systems requiring reset initiation during ultra-low-power states.

Can MAX6384XS16D1+T monitor a second voltage rail like some members of the MAX6381–MAX6390 family?

No, MAX6384XS16D1+T does not support auxiliary voltage monitoring. Unlike MAX6387/MAX6388/MAX6389 variants, it lacks a RESET IN pin and is designed exclusively for single-rail supervision of V_CC. For dual-rail monitoring, consider MAX6387XS16D1+T, which adds a dedicated high-impedance RESET IN comparator referenced to 1.27V.

What package type and dimensions does MAX6384XS16D1+T use, and is it RoHS-compliant?

MAX6384XS16D1+T uses a 4-pin SC70 package (outline 21-0098) measuring 1.25mm × 1.25mm × 0.95mm, with lead (Pb)-free/RoHS-compliant finish indicated by the "+" suffix in the part number. This compact, surface-mount package supports reflow soldering per JEDEC J-STD-020 and is compatible with standard automated assembly processes for high-volume manufacturing.