Analog Devices Inc./Maxim Integrated MAX6384XS29D3

Overview

MAX6384XS29D3 from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 2.93V reset threshold (±2.5% over –40°C to +125°C), 140ms minimum VCC reset timeout, and debounced manual reset input. It monitors single-supply systems in portable electronics, battery-powered controllers, and industrial embedded devices where supply stability and deterministic reset timing are critical.

For engineers reviewing the MAX6384XS29D3 datasheet, MAX6384XS29D3 pinout, MAX6384XS29D3 application, or MAX6384XS29D3 equivalent, key selection factors include its 3µA supply current at 1.8V, guaranteed reset validity down to VCC = 1V, SC70-4 package footprint, and compatibility with manual-reset switch interfaces requiring no external debounce.

Technical Context

The MAX6384XS29D3 implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across temperature, paired with a monotonic RC-based timeout timer. Its reset assertion logic responds to VCC falling below 2.93V or MR being pulled low, holding RESET low for ≥140ms after recovery.

It features an internal 63kΩ pullup on MR, supports TTL/CMOS-compatible manual reset triggering, and guarantees correct reset state down to VCC = 1V-enabling robust operation during brownout conditions without external level-shifting circuitry.

Key Specifications

Pinout & Package

MAX6384XS29D3 is housed in a lead-free 4-pin SC70 package (X4-1), measuring 1.5mm × 1.0mm × 0.8mm, optimized for space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326XR29D3, the MAX6384XS29D3 adds MR functionality without increasing quiescent current or package size; compared with TPS3808G33DBVR, it delivers tighter timeout control and push-pull drive-reducing component count and improving noise margin in compact designs.

Availability

MAX6384XS29D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply, long-lifecycle support, and consistent parametric performance.

Supply support for MAX6384XS29D3 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.

The MAX6381–MAX6390 family was engineered specifically for ultra-low-power, high-accuracy microprocessor supervision in space- and energy-constrained systems-emphasizing guaranteed operation across extended temperature ranges and minimal external component requirements.

FAQ

What is the exact reset threshold voltage of the MAX6384XS29D3?

The MAX6384XS29D3 has a factory-set nominal reset threshold of 2.93V, with a guaranteed range of 2.85V (min) to 3.00V (max) over the full operating temperature range of –40°C to +125°C. This value is laser-trimmed during production and specified with ±2.5% accuracy, making it suitable for reliable monitoring of 3.0V and 3.3V power rails without external calibration.

Does the MAX6384XS29D3 require an external pullup resistor on the RESET pin?

No, the MAX6384XS29D3 features an active-low push-pull RESET output, meaning it actively drives both high and low states. Unlike open-drain variants, it does not require an external pullup resistor-simplifying design, reducing BOM count, and improving noise immunity on the reset line in the MAX6384XS29D3 application.

What is the function of the MR pin on the MAX6384XS29D3?

The MR (Manual Reset) pin on the MAX6384XS29D3 is an active-low input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 140ms timeout period after MR is released. This enables operator-triggered or test-system–initiated resets without external debounce circuitry-fully supported in the MAX6384XS29D3 datasheet.

Can the MAX6384XS29D3 operate reliably during deep brownout conditions?

Yes, the MAX6384XS29D3 guarantees correct RESET output logic state down to VCC = 1.0V, as confirmed in its Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic reset behavior during severe brownout events-critical for preventing corrupted firmware execution in safety- or mission-critical applications using the MAX6384XS29D3.

What package type and dimensions does the MAX6384XS29D3 use?

The MAX6384XS29D3 uses a lead-free 4-pin SC70 package (package code X4-1), with nominal dimensions of 1.5mm × 1.0mm × 0.8mm. Its small footprint and thermal characteristics make it ideal for high-density PCB layouts in portable and automotive electronics where board space is constrained-explicitly documented in the MAX6384XS29D3 ordering information and package drawings.