Analog Devices Inc./Maxim Integrated MAX16001CTE+

Overview

The MAX16001CTE+ from Maxim Integrated is a quad-voltage microprocessor supervisor IC in a 16-pin TQFN (4mm × 4mm) package, monitoring four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V) with ±5% or ±10% threshold tolerance selection, 140ms minimum reset timeout, and integrated watchdog timer (1.6s typical timeout). It serves critical power-good supervision in multivoltage server and storage systems.

For engineers reviewing the MAX16001CTE+ datasheet, MAX16001CTE+ pinout, MAX16001CTE+ application, or MAX16001CTE+ equivalent, key selection criteria include quad-rail monitoring capability, capacitor-adjustable reset timeout, open-drain outputs with internal 30µA pullups, watchdog startup delay (54s), and AEC-Q100 qualification for automotive-adjacent industrial use.

Technical Context

The MAX16001CTE+ implements a fixed-threshold + adjustable-input architecture supporting simultaneous monitoring of four voltage domains, with each monitored input (IN1–IN4) driving an independent open-drain output (OUT1–OUT4) and contributing to a shared active-low RESET assertion. Thresholds are selected via TOL pin (GND = ±5%, VCC = ±10%) and include factory-set values for 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V.

Its watchdog timer initiates after reset timeout completion, requires WDI edge transitions to clear, and asserts RESET on timeout (1.12–2.40s); the 54s startup delay prevents false triggers during power-up sequencing. All outputs remain functional down to VCC = 1V, ensuring reliable operation during brownout conditions.

Key Specifications

Pinout & Package

MAX16001CTE+ uses a 16-pin TQFN package (4mm × 4mm, exposed pad), RoHS-compliant, with thermal pad internally connected to GND. Pinout optimized for compact multivoltage supervision with dedicated inputs, outputs, and control signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3307-33DGNR and ADM1085AKSZ-REEL7, the MAX16001CTE+ uniquely supports four independently configurable rails (including sub-1V adjustable), capacitor-tunable reset timing, and integrated watchdog with startup delay - making it optimal for next-generation multivoltage systems demanding flexibility and runtime reliability.

Availability

MAX16001CTE+ 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 product lifecycles.

Supply support for MAX16001CTE+ 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, computing, communications, and automotive markets.

The MAX16000–MAX16007 family was engineered specifically for complex multivoltage systems requiring simultaneous supervision of ≥4 rails with flexible threshold selection, robust reset timing, and integrated watchdog functionality - targeting high-reliability server, storage, and telecom infrastructure.

FAQ

What voltage rails does the MAX16001CTE+ monitor?

The MAX16001CTE+ monitors four independent voltage rails: IN1–IN4. Per its ordering option 'C', it is configured for 3.3V, 2.5V, adjustable (down to 0.4V), and 1.8V thresholds. Threshold tolerance (±5% or ±10%) is selected via the TOL pin, and each input drives a dedicated open-drain output (OUT1–OUT4).

Does the MAX16001CTE+ include a watchdog timer?

Yes, the MAX16001CTE+ includes an integrated watchdog timer with a typical timeout period of 1.6s (1.12–2.40s range). It features a 54s startup delay after reset deassertion to accommodate boot firmware execution. The timer is disabled when the WDI pin is left floating and clears on any rising or falling edge at WDI.

How is the reset timeout period set on the MAX16001CTE+?

The MAX16001CTE+ offers two reset timeout modes: fixed minimum (140ms) by connecting SRT to VCC, or capacitor-adjustable by connecting a capacitor from SRT to GND. Timeout duration follows tRP = 2.06 × 10⁶ Ω × CSRT (F), enabling precise tuning from ~200µs to ~3.92ms depending on capacitor value.

What package type is used for the MAX16001CTE+?

The MAX16001CTE+ uses a 16-pin TQFN package measuring 4mm × 4mm with an exposed thermal pad (EP) internally connected to GND. This compact, thermally efficient package supports high-density PCB layouts and is RoHS-compliant, with outline number 21-0139 and land pattern 90-0070.

Can the MAX16001CTE+ operate at low supply voltages?

Yes, the MAX16001CTE+ operates over a wide VCC range of 1.0V to 5.5V and guarantees correct logic state down to VCC = 1V - critical for brownout resilience in battery-backed or energy-harvesting systems. Its internal circuitry remains functional and outputs retain defined states even during deep undervoltage conditions.