Analog Devices Inc./Maxim Integrated MAX6467XS16D3/V+T

Overview

The MAX6467XS16D3/V+T from Analog Devices is a precision microprocessor supervisory reset circuit in SC70-4 package, monitoring +1.8V supply with factory-trimmed 1.575V reset threshold (±1.5% at +25°C), 150ms min reset timeout, active-low open-drain RESET output, and edge-triggered manual reset input-used to ensure reliable power-on reset and brownout recovery in automotive control modules.

For engineers reviewing the MAX6467XS16D3/V+T datasheet, MAX6467XS16D3/V+T pinout, MAX6467XS16D3/V+T application, or MAX6467XS16D3/V+T equivalent, key selection criteria include its AEC-Q100 qualification, VCC operation down to +1.0V, 3µA supply current at +1.8V, -40°C to +125°C automotive temperature range, and compatibility with +1.8V system rails requiring tight threshold accuracy and glitch immunity.

Technical Context

This device implements a precision bandgap-based voltage reference and comparator to detect VCC drops below its fixed 1.575V threshold, with ±2.5% tolerance over -40°C to +85°C. Its internal one-shot timer generates a fixed 150ms–300ms reset pulse on VCC recovery or MR falling edge.

The edge-triggered MR input includes 150ms rising-edge debounce and ignores subsequent glitches within that window; the open-drain RESET output requires an external pullup and remains valid as long as VCC ≥ +1V, supporting fail-safe behavior during deep undervoltage conditions.

Key Specifications

Pinout & Package

Package: 4-pin SC70-4 (2.0mm × 2.1mm × 0.9mm), lead(Pb)-free/RoHS-compliant, tape-and-reel (+T suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6467XS16D3/V+T, MAX6384US29D3/V+T offers push-pull output but targets +3.3V systems and omits MR debounce; TLV803EB29DPWR reduces size and current but sacrifices MR support and automotive compliance-making MAX6467XS16D3/V+T uniquely suited for AEC-Q100 +1.8V applications requiring robust manual reset handling.

Availability

MAX6467XS16D3/V+T is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, industrial PLCs, and medical infusion pumps requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6467XS16D3/V+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6467/MAX6468 product line delivers precision, low-power, automotive-grade supervisory circuits optimized for reliable reset generation in safety-critical +1.8V to +5.0V embedded systems.

FAQ

What is the exact reset threshold voltage of the MAX6467XS16D3/V+T and how tightly is it specified?

The MAX6467XS16D3/V+T has a factory-trimmed reset threshold of 1.575V, with guaranteed limits of 1.536V (min) and 1.614V (max) at +25°C. Over the full -40°C to +85°C range, tolerance widens to ±2.5%, and at +85°C to +125°C it is ±3%. This precision eliminates calibration components and ensures accurate supervision of +1.8V rails in automotive and industrial applications where MAX6467XS16D3/V+T is deployed.

Does the MAX6467XS16D3/V+T support manual reset, and how does its edge-triggered behavior differ from level-sensitive alternatives?

Yes, the MAX6467XS16D3/V+T features an edge-triggered manual reset (MR) input that responds only to the falling edge, generating a fixed 150ms–300ms one-shot reset pulse regardless of MR signal duration. Unlike level-sensitive supervisors, this prevents repeated resets if MR is held low, and its 150ms rising-edge debounce rejects switch bounce-critical for reliable field service in systems using MAX6467XS16D3/V+T.

What output type does the MAX6467XS16D3/V+T use, and why is open-drain advantageous in system design?

The MAX6467XS16D3/V+T uses an active-low open-drain RESET output, requiring an external pullup resistor. This enables wired-OR connection with other reset sources (e.g., watchdog timers or power sequencers), supports mixed-voltage systems (pullup to 3.3V while monitoring 1.8V), and simplifies interface to µP reset inputs with varying voltage tolerances-key advantages in complex automotive and industrial designs where MAX6467XS16D3/V+T is integrated.

Is the MAX6467XS16D3/V+T qualified for automotive applications, and what does the "/V+T" suffix signify?

Yes, the "/V" in MAX6467XS16D3/V+T denotes AEC-Q100 qualification for automotive Grade 1 (-40°C to +125°C), and "+T" indicates lead(Pb)-free/RoHS-compliant packaging in tape-and-reel format. This makes MAX6467XS16D3/V+T suitable for under-hood and cabin applications including ECUs and ADAS modules where reliability across extreme temperatures and regulatory compliance are mandatory.

How low can VCC drop while still guaranteeing valid RESET assertion from the MAX6467XS16D3/V+T?

The MAX6467XS16D3/V+T guarantees valid RESET output down to VCC = +1.0V, meaning the open-drain RESET pin remains actively driven low during brownout conditions until VCC falls below +1.0V. This ensures deterministic reset behavior during gradual power decay-essential for safety-critical applications like medical devices and automotive controllers where MAX6467XS16D3/V+T provides fail-safe supervision.