Analog Devices Inc./Maxim Integrated MAX16005ATE+T

Overview

MAX16005ATE+T from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 16-pin TSSOP package. It monitors six independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V), provides an active-low RESET output asserting on any undervoltage or manual reset, features a dedicated watchdog output (WDO), and includes a precision 1.235V reference (±0.5% over temp). It is used in multivoltage server power sequencing and fault monitoring.

For engineers reviewing the MAX16005ATE+T datasheet, MAX16005ATE+T pinout, MAX16005ATE+T application, or MAX16005ATE+T equivalent, key selection criteria include its six-rail monitoring capability, independent WDO for watchdog isolation, integrated 1.235V reference with 40µA sourcing, capacitor-adjustable reset timeout (140ms min), and operation across –40°C to +125°C.

Technical Context

The MAX16005ATE+T implements a hierarchical supervision architecture: six monitored inputs (IN1–IN6) feed independent comparators with user-selectable 5%/10% threshold tolerance via TOL pin; RESET asserts if any input falls below its threshold or MR is pulled low, with timeout controlled by SRT capacitor or internal 140ms minimum. Its dedicated WDO output responds solely to watchdog timeout (1.6s typ), decoupled from voltage monitoring events.

Unlike family members with startup delay, MAX16005ATE+T's watchdog timer has no 54s startup period-WDI edge detection begins immediately after power-up. The REF pin delivers a stable 1.235V ±0.5% reference (1.200V–1.270V) with line/load regulation under 0.005%/V and 10Ω output impedance, enabling accurate margining or ADC reference use without external components.

Key Specifications

Pinout & Package

MAX16005ATE+T is housed in a 16-pin TSSOP package (outline 21-0066, land pattern 90-0117) with exposed pad internally connected to GND for thermal dissipation. Pin functions are validated per Maxim's official pin configuration diagram for MAX16005 TSSOP.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16005ATP+T, MAX16005ATE+T offers identical supervision functionality in a larger, more manufacturable TSSOP package ideal for prototyping and through-hole-compatible rework; versus MAX16004ATE+T, it adds critical hardware-level separation between voltage monitoring and watchdog signaling-enabling concurrent fault analysis and safer system recovery.

Availability

MAX16005ATE+T is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC I/O modules, telecom line cards, and automotive ADAS domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16005ATE+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 high-reliability industrial, communications, and computing systems.

The MAX16000–MAX16007 family was engineered specifically for complex multivoltage systems requiring simultaneous, independent supervision of 4–8 rails with integrated watchdog and reference functions-targeting server, storage, and networking infrastructure.

FAQ

What is the function of the REF pin on the MAX16005ATE+T?

The REF pin on the MAX16005ATE+T provides a precision 1.235V ±0.5% reference voltage (1.200V–1.270V) capable of sourcing up to 40µA. It is used for accurate ADC calibration, margin testing, or as a stable reference for external comparators-eliminating the need for discrete reference ICs in multivoltage systems. This feature is unique to MAX16005ATE+T within the MAX16000–MAX16007 family.

Does the MAX16005ATE+T have a watchdog startup delay like other family members?

No, the MAX16005ATE+T does not implement the 54s watchdog startup delay found in MAX16001/MAX16002/MAX16004–MAX16007. Its watchdog timer begins monitoring WDI edges immediately after power-up, enabling faster fault detection during initial system boot. This behavior is explicitly documented in the MAX16005-specific pin description section of the datasheet.

How many voltage rails does the MAX16005ATE+T monitor, and what thresholds are supported?

The MAX16005ATE+T monitors six independent voltage rails (IN1–IN6). It supports fixed thresholds for 3.3V, 2.5V, 1.8V, and adjustable thresholds down to 0.4V. Threshold tolerance is selectable via the TOL pin (5% at GND, 10% at VCC), and hysteresis is 0.5% of the threshold voltage-ensuring noise immunity in noisy power environments.

What is the purpose of the MARGIN pin on the MAX16005ATE+T?

The MARGIN pin on the MAX16005ATE+T is an active-low input that deasserts all outputs (OUT1–OUT6 and RESET) when pulled low, regardless of monitored voltage states. This enables hardware-controlled margin testing-allowing engineers to temporarily override supervision during factory calibration or stress testing without modifying firmware or removing components.

Can the reset timeout period of the MAX16005ATE+T be adjusted, and how?

Yes, the reset timeout period of the MAX16005ATE+T is adjustable via an external capacitor connected between the SRT pin and GND. The timeout follows tRP = 2.06 × 10⁶ Ω × CSRT (F), enabling delays from ~140ms (minimum, with SRT tied to VCC) up to several seconds. This capacitor-based adjustment provides precise, hardware-defined reset timing independent of software or system clock stability.