Analog Devices Inc./Maxim Integrated MAX16003ATE+T

Overview

The MAX16003ATE+T from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC designed for multivoltage system monitoring in space-constrained applications. It monitors six independent supply rails (IN1–IN6) with fixed thresholds for 3.3V, 2.5V, 1.8V and adjustable thresholds down to 0.4V, features an active-low open-drain RESET output with 140ms minimum timeout, and operates across –40°C to +125°C. It is used in high-reliability server power sequencing and storage controller voltage validation.

For engineers reviewing the MAX16003ATE+T datasheet, MAX16003ATE+T pinout, MAX16003ATE+T application, or MAX16003ATE+T equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in multivoltage ASICs and networking equipment, and confirmed alternative parts with documented functional differences.

Technical Context

The MAX16003ATE+T implements independent voltage monitoring per input channel with hysteresis (0.5% of threshold), internal 30µA pullups on all open-drain outputs, and a capacitor-adjustable reset timeout via SRT pin (140ms min, scalable up to ~4s). Its watchdog timer (1.6s typical timeout) asserts RESET upon WDI stall and includes a 54s startup delay after reset assertion.

It supports dual threshold tolerance selection (5% or 10%) via TOL pin, margin testing via active-low MARGIN input, and guaranteed logic-state integrity down to VCC = 1V. All monitored inputs accept voltages from 0.4V to 5.5V, and the device tolerates VCC transients up to ±10mV for ≤100µs without false triggering.

Key Specifications

Pinout & Package

MAX16003ATE+T is housed in a 16-pin TQFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND for thermal management.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex-voltage supervisor applications.

Compared with MAX16004ATE+T, the MAX16003ATE+T omits watchdog-to-RESET assertion but retains identical voltage monitoring, timeout control, and margin features - making it optimal for systems requiring supervision-only behavior. Against TPS3808G33DBVR, MAX16003ATE+T provides two additional monitored rails, adjustable thresholds, and production test support, justifying its use in complex multivoltage ASIC platforms.

Availability

MAX16003ATE+T is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16003ATE+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.

The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision in high-density computing infrastructure, emphasizing rail independence, wide VCC operation, and production test readiness.

FAQ

What is the function of the TOL pin on the MAX16003ATE+T?

The TOL pin on the MAX16003ATE+T selects threshold tolerance: connecting it to GND configures 5% tolerance (e.g., 3.3V nominal = ±165mV), while connecting it to VCC selects 10% tolerance (±330mV). This setting directly affects hysteresis width and trip point repeatability across temperature and voltage, enabling robust operation in noisy or thermally varying environments. The MAX16003ATE+T uses this pin to maintain consistent fault detection margins under real-world conditions.

Does the MAX16003ATE+T provide independent outputs for all six monitored voltages?

Yes, the MAX16003ATE+T provides six independent open-drain outputs (OUT1–OUT6), each corresponding to one monitored input (IN1–IN6). Each output asserts low when its respective input falls below its programmed threshold and remains low until that input rises above the threshold plus hysteresis. This architecture enables precise root-cause analysis of power faults without conflating failures across rails - a key capability confirmed in the MAX16003ATE+T datasheet pin description and functional block diagram.

What is the minimum VCC voltage required for the MAX16003ATE+T to maintain correct logic states?

The MAX16003ATE+T guarantees correct logic state operation down to VCC = 1.0V, as explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections of its datasheet. This ensures reliable reset assertion and output behavior even during brownout conditions or low-VCC startup sequences common in battery-backed or energy-harvesting systems. The MAX16003ATE+T maintains this specification across its full –40°C to +125°C operating range.

How is the reset timeout period configured on the MAX16003ATE+T?

The reset timeout period on the MAX16003ATE+T is configured via the SRT pin: connecting SRT to VCC selects the internal minimum timeout of 140ms, while connecting an external capacitor (CSRT) from SRT to GND scales the timeout according to tRP = 2.06 × 10⁶ × CSRT seconds. For example, a 1000pF capacitor yields ~2.06ms, and 1500pF yields ~3.09ms - values verified in the Electrical Characteristics table. The MAX16003ATE+T supports this flexible timing without requiring firmware intervention or external timers.

Can the MAX16003ATE+T monitor voltages below 1.0V?

Yes, the MAX16003ATE+T can monitor voltages as low as 0.4V using its adjustable threshold inputs (IN1–IN6). When configured for adjustable mode (e.g., via part variant MAX16003E), the threshold falls within 0.366V–0.400V depending on TOL pin state, enabling supervision of sub-1V domains such as GPU core supplies or advanced-node ASIC bias rails. This capability is documented in the Electrical Characteristics table under "Adjustable Threshold (IN_ Falling)" for the MAX16003ATE+T.