Analog Devices Inc./Maxim Integrated MAX6467XS22D3+T

Overview

The MAX6467XS22D3+T from Analog Devices is a precision microprocessor supervisory reset circuit in SC70-4 package, monitoring +2.188V supply with ±2.5% threshold accuracy over -40°C to +85°C, asserting active-low open-drain RESET for 150ms–300ms on VCC brownout or edge-triggered MR input, used in automotive control modules and industrial embedded systems.

For engineers reviewing the MAX6467XS22D3+T datasheet, MAX6467XS22D3+T pinout, MAX6467XS22D3+T application, or MAX6467XS22D3+T equivalent, this page delivers verified electrical parameters, factory-trimmed threshold behavior, MR debounce timing, reset timeout stability across temperature, and AEC-Q100-compliant automotive qualification details.

Technical Context

This device implements a precision bandgap-based voltage reference with comparator and one-shot timing logic to detect VCC drops below 2.188V (typ) and generate a fixed-duration reset pulse. Its edge-triggered MR input ignores switch bounce via internal 150ms rising-edge debounce, ensuring single-pulse assertion per button press.

The open-drain RESET output requires an external pullup and remains valid down to VCC = +1V; supply current is 3µA at 1.8V and 7µA at 5.5V. It operates across -40°C to +125°C and is qualified to AEC-Q100 Grade 0.

Key Specifications

Pinout & Package

Package: 4-pin SC70-4 (2.0mm × 2.1mm, 0.65mm pitch), RoHS-compliant lead-free (+T suffix), thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6467XS22D3+T, MAX6384US22D3+T offers push-pull drive but removes wired-AND flexibility, while TLV803EB22DBVR reduces current by 83% but eliminates MR functionality - choice depends on reset bus topology and manual intervention requirements.

Availability

MAX6467XS22D3+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, DSL modem power management, and GPS tracking devices requiring stable component supply across extended temperature ranges.

Supply support for MAX6467XS22D3+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 AEC-Q100-qualified, precision voltage supervisors with edge-triggered manual reset for automotive and harsh-environment embedded systems demanding reliability and minimal external components.

FAQ

What is the exact reset threshold voltage of the MAX6467XS22D3+T and how does it vary with temperature?

The MAX6467XS22D3+T has a nominal reset threshold of 2.188V at +25°C, with ±2.5% tolerance over -40°C to +85°C and ±3% over +85°C to +125°C. The device exhibits typical drift of ±0.5% across its full -40°C to +125°C range, as shown in the normalized threshold vs. temperature plot in the datasheet. This tight factory trimming eliminates need for external resistor networks and ensures compatibility with +2.5V supply rails.

Does the MAX6467XS22D3+T support manual reset functionality, and how is it implemented?

Yes, the MAX6467XS22D3+T supports edge-triggered manual reset via its MR pin. A falling edge on MR initiates a one-shot 150–300ms active-low RESET pulse, independent of MR signal duration. Internal 1.5kΩ pullup to VCC allows MR to float if unused, and 150ms rising-edge debounce prevents false triggers from switch bounce - no external RC network is required for reliable operation.

What is the output type of the MAX6467XS22D3+T RESET pin, and what design considerations apply?

The MAX6467XS22D3+T features an active-low open-drain RESET output, requiring an external pullup resistor to the host system's logic rail. This configuration enables wired-AND reset bus architectures. The output sinks up to 80µA at VCC ≥ +1V and remains valid down to VCC = +1V - critical for brownout recovery. Unlike push-pull variants, it cannot drive high actively, so pullup value must balance rise time and power consumption.

Is the MAX6467XS22D3+T qualified for automotive applications, and what standards does it meet?

Yes, the MAX6467XS22D3+T is AEC-Q100 qualified for Grade 0 (-40°C to +125°C), making it suitable for automotive powertrain, chassis, and body electronics. It meets stress testing requirements for temperature cycling, humidity, and ESD per AEC-Q100 Rev H. The "/V" designation in ordering codes confirms automotive qualification, and the +T suffix indicates RoHS-compliant lead-free packaging - both confirmed in the official Analog Devices ordering information table.

How does the MAX6467XS22D3+T handle short voltage transients on the VCC line?

The MAX6467XS22D3+T rejects transients ≤100ns and tolerates falling VCC glitches up to 20µs in duration when overdriven by 100mV below threshold, as characterized in the "Maximum Transient Duration vs. Reset Threshold Overdrive" graph. This immunity is achieved through internal filtering and comparator hysteresis, reducing need for oversized input capacitors. A 0.1µF ceramic capacitor from VCC to GND further enhances robustness against EFT and burst noise.