Analog Devices Inc./Maxim Integrated MAX16005ETE+

Overview

The MAX16005ETE+ from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 16-pin TSSOP package, monitoring six independent supply rails (VIN1–VIN6) with fixed and adjustable thresholds (e.g., 3.3V, 2.5V, 1.8V, down to 0.4V), featuring an independent watchdog output (WDO), 1.235V reference (REF), and open-drain RESET/OUT_ outputs with internal 30µA pullups - used in multivoltage server power sequencing and ASIC supervision.

For engineers reviewing the MAX16005ETE+ datasheet, MAX16005ETE+ pinout, MAX16005ETE+ application, or MAX16005ETE+ equivalent, key selection criteria include its six-rail monitoring capability, independent WDO assertion on watchdog timeout (1.6s typ), REF output accuracy (±0.035V), TSSOP-16 thermal performance (754mW at +70°C), and guaranteed operation down to VCC = 1V.

Technical Context

The MAX16005ETE+ implements a dual-path supervisory architecture: one path monitors six input voltages (IN1–IN6) with user-selectable 5%/10% threshold tolerance via TOL pin, and asserts RESET low if any falls below its threshold; the second path includes a dedicated watchdog timer that drives WDO (not RESET) upon timeout, with no startup delay - unlike MAX16001/2/4/6/7.

It integrates a precision 1.235V reference (±0.035V over -40°C to +125°C, load-regulated to 40µA), supports capacitor-adjustable reset timeout (140ms min, scalable via SRT pin), and provides margin enable (MARGIN pin) for active deassertion of all outputs during system validation testing.

Key Specifications

Pinout & Package

MAX16005ETE+ uses a 16-pin TSSOP package (outline 21-0066, land pattern 90-0117) with exposed pad (EP) tied internally to GND. 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 MAX16004ETE+, the MAX16005ETE+ provides isolated watchdog signaling and eliminates startup delay - essential for deterministic firmware recovery. Versus TPS3808G33DBVR, it delivers six-rail supervision, reference output, and flexible timing - making it irreplaceable in complex ASIC/FPGA power management.

Availability

MAX16005ETE+ is available at Aetrix Electronics and suitable for server power sequencing, ASIC/FPGA supervision, industrial PLCs, and telecom line card designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16005ETE+ 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 and mixed-signal ICs for power management, sensing, and connectivity in industrial, computing, and communications systems.

The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision - delivering integrated rail monitoring, reset coordination, watchdog independence, and reference generation in minimal footprint packages.

FAQ

What is the function of the REF pin on the MAX16005ETE+?

The REF pin on the MAX16005ETE+ provides a precision 1.235V output with ±0.035V accuracy over -40°C to +125°C and supports up to 40µA source current. It is internally trimmed and load-regulated (<10Ω), enabling use as a stable reference for ADCs, comparators, or bias circuits without external components - a feature unique to the MAX16005 within the MAX16000–MAX16007 family.

How does the watchdog behavior of the MAX16005ETE+ differ from other parts in the MAX16000–MAX16007 family?

The MAX16005ETE+ features an independent watchdog output (WDO) that asserts low on timeout without affecting the RESET signal - unlike MAX16004ETE+, which asserts RESET. It also omits the 54s startup delay present in MAX16001/2/4/6/7. This allows immediate watchdog response post-power-up and clean separation between power-failure and software-hang fault handling in the MAX16005ETE+.

Can the MAX16005ETE+ monitor voltages below 1.0V?

Yes, the MAX16005ETE+ supports adjustable thresholds down to 0.4V (typical) when configured with TOL = VCC. Its INx inputs accept voltages as low as 0.4V with guaranteed hysteresis and propagation delay (20µs), enabling supervision of sub-1V domains such as advanced SoC cores or LPDDR4 VDDQ - confirmed in Electrical Characteristics Table (VTH = 0.366–0.378V, TOL = VCC).

What is the purpose of the MARGIN pin on the MAX16005ETE+?

The MARGIN pin on the MAX16005ETE+ is an active-low input that forces all monitored outputs (OUT1–OUT6 and RESET) into a high (deasserted) state regardless of input voltage conditions. This enables live voltage margin testing during system validation - for example, lowering rail voltages while holding outputs high to verify functional limits - without requiring power cycling or external logic.

Does the MAX16005ETE+ require external pullup resistors on its open-drain outputs?

No, the MAX16005ETE+ integrates internal 30µA pullup current sources on all open-drain outputs (OUT1–OUT6, RESET, WDO), eliminating the need for external pullup resistors. Each output can also be driven by an external voltage up to 5.5V, allowing level-shifting compatibility with higher-voltage logic families - a design feature explicitly stated in the General Description section.