Analog Devices Inc./Maxim Integrated MAX1613600/VY+T

Overview

MAX1613600/VY+T from Analog Devices is a high-precision automotive-grade supervisory IC that monitors a 3.3V system supply for ±4% undervoltage/overvoltage faults with ±1% threshold accuracy, features a window watchdog (8ms fast / 80ms slow timeout), latched overvoltage fault output (OV), and open-drain reset (RST) with 10ms factory-set timeout-used in ADAS domain controllers to ensure microcontroller code execution integrity and power-rail stability.

For engineers reviewing the MAX1613600/VY+T datasheet, MAX1613600/VY+T pinout, MAX1613600/VY+T application, or MAX1613600/VY+T equivalent, key selection criteria include its ±0.25% hysteresis, 5µs overvoltage fault delay, side-wettable 8-pin TDFN package, -40°C to +125°C operation, and ASIL-compliant supervision architecture for safety-critical automotive systems.

Technical Context

The MAX1613600/VY+T implements a dual-threshold comparator architecture with independent undervoltage and overvoltage detection referenced to a factory-trimmed 3.3V nominal input, enabling precise window-based supply monitoring. Its internal transition detector triggers RST assertion within 5µs of IN crossing VUVTH or VOVTH, and holds RST low for exactly 10ms after re-entry into the valid window.

A dedicated window-watchdog timer validates microcontroller activity by measuring inter-falling-edge intervals on WDI: pulses shorter than 8ms or longer than 80ms cause WDO to assert for 50ms or 100ms respectively. The OV output latches low on overvoltage detection and requires an active-low CLR pulse ≥400ns to clear-only after the overvoltage condition has been removed.

Key Specifications

Pinout & Package

MAX1613600/VY+T is housed in an 8-pin TDFN side-wettable package (2mm × 2mm, 0.5mm pitch) with exposed thermal pad (EP) connected to GND-designed for automated optical inspection (AOI) and enhanced solder joint reliability in automotive PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1613600/VY+T, MAX1613603/VY+T offers identical supervision architecture but targets 5V rails, while TLV809E33DBVR provides only basic reset functionality in a smaller package-neither matches the integrated window detection, dual-mode watchdog, and latched overvoltage capability required for ASIL-compliant automotive systems.

Availability

MAX1613600/VY+T is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive ECUs, and multivoltage ASICs requiring stable component supply with guaranteed automotive-grade qualification and long-term lifecycle support.

Supply support for MAX1613600/VY+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 automotive, industrial, communications, and healthcare markets.

The MAX16136 family delivers high-accuracy, multi-function supervision for safety-critical automotive electronics-designed specifically to meet ASIL-B/C system-level requirements through precision voltage monitoring, window watchdogs, and fault-latching outputs.

FAQ

What is the factory-set nominal input threshold voltage for MAX1613600/VY+T?

The MAX1613600/VY+T is factory-trimmed for a 3.3V nominal input threshold voltage, supporting ±4% undervoltage/overvoltage detection (3.168V to 3.432V window) with ±1% accuracy across -40°C to +125°C. This setting is fixed and cannot be adjusted externally-ensuring consistent behavior in automotive 3.3V I/O rail monitoring applications where MAX1613600/VY+T is deployed.

Does MAX1613600/VY+T support both undervoltage and overvoltage detection simultaneously?

Yes, MAX1613600/VY+T implements true window supervision: it continuously monitors the IN pin and asserts RST whenever the input voltage falls below 3.168V (undervoltage) or rises above 3.432V (overvoltage). The ±4% symmetric tolerance around 3.3V enables detection of both fault types with a single device-eliminating the need for separate UVLO and OVP circuits in MAX1613600/VY+T-based designs.

How does the window watchdog function in MAX1613600/VY+T?

The MAX1613600/VY+T window watchdog requires the microcontroller to toggle WDI low at intervals between 8ms (fast timeout) and 80ms (slow timeout). Falling edges closer than 8ms trigger a 50ms WDO pulse; intervals longer than 80ms trigger a 100ms WDO pulse. This dual-bound timing window in MAX1613600/VY+T detects both runaway loops and frozen execution-critical for functional safety in automotive systems.

What is the purpose of the OV output and how is it cleared on MAX1613600/VY+T?

The OV output on MAX1613600/VY+T is a latched, open-drain signal that goes low when IN exceeds 3.432V and remains latched until CLR is pulled low for ≥400ns. This latch persists through power cycles and ensures overvoltage events are not missed-even if brief-making MAX1613600/VY+T suitable for diagnostic logging in automotive ECUs where fault history must be preserved.

Is MAX1613600/VY+T qualified for automotive applications?

Yes, MAX1613600/VY+T is AEC-Q100 qualified for automotive use with operation from -40°C to +125°C, side-wettable TDFN packaging for AOI compatibility, and design features supporting ISO 26262 ASIL compliance-including FMD reports available upon request. The "/V" suffix in MAX1613600/VY+T explicitly denotes automotive grade qualification per Analog Devices' ordering nomenclature.