Analog Devices Inc./Maxim Integrated MAX16007ETP+T

Overview

The MAX16007ETP+T from Maxim Integrated is an octal-voltage microprocessor supervisor IC in a 24-pin TQFN (4mm × 4mm) package, designed to monitor eight independent supply rails (e.g., 5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 0.9V, and adjustable down to 0.4V) with ±5% or ±10% threshold tolerance selection. It provides a single active-low RESET output asserting on any undervoltage condition or manual reset, with 140ms minimum timeout (capacitor-adjustable), integrated watchdog timer (1.6s timeout), and margin enable functionality. It serves multivoltage ASICs and high-reliability server power sequencing.

For engineers reviewing the MAX16007ETP+T datasheet, MAX16007ETP+T pinout, MAX16007ETP+T application, or MAX16007ETP+T equivalent, key selection criteria include its 8-channel monitoring capability, guaranteed operation down to VCC = 1V, internal 30µA pullups eliminating external resistors, -40°C to +125°C temperature rating, and compatibility with complex power-up/power-down sequencing in storage and networking equipment.

Technical Context

The MAX16007ETP+T implements a fixed-threshold + adjustable-input architecture with per-channel hysteresis (0.5% of threshold) and independent input current specification (±100nA for adjustable thresholds). Its RESET assertion logic combines ORed undervoltage detection across all eight IN_ inputs plus MR and WDI fault conditions, with synchronized deassertion after all voltages recover and timeout expires.

It integrates a watchdog timer with 54s startup delay after reset, disabled by leaving WDI floating, and supports margin testing via active-low MARGIN input that forces all outputs high regardless of input states. The SRT pin enables precise reset timeout tuning via external capacitor (2.06MΩ × CSRT), with internal 140ms minimum when tied to VCC.

Key Specifications

Pinout & Package

MAX16007ETP+T is housed in a 24-pin TQFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND for thermal management. Pinout follows MAX16006/MAX16007 configuration: IN1–IN8 (voltage inputs), OUT1–OUT8 (independent open-drain outputs), RESET (active-low system reset), MR (active-low manual reset), WDI (watchdog input), SRT (reset timeout capacitor), MARGIN (active-low margin disable), TOL (tolerance select), VCC, GND, and N.C. pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16006ETP+T and TPS386000RGPT, the MAX16007ETP+T uniquely delivers 8-channel supervision with integrated watchdog, capacitor-adjustable reset timeout, and margin enable-all in a thermally enhanced 4mm × 4mm TQFN-making it optimal for high-density, high-reliability multivoltage systems requiring production test flexibility.

Availability

MAX16007ETP+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 product lifecycles.

Supply support for MAX16007ETP+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 demanding industrial, automotive, and communications applications.

The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision-addressing the need for scalable, low-power, high-accuracy monitoring of 4–8 supply rails in space-constrained, thermally challenging environments.

FAQ

What is the function of the SRT pin on the MAX16007ETP+T?

The SRT (Set Reset Timeout) pin on the MAX16007ETP+T sets the duration of the RESET assertion period after undervoltage recovery or manual reset release. When connected to VCC, it enables the internal 140ms minimum timeout. Connecting an external capacitor from SRT to GND extends the timeout linearly per the formula tRP = 2.06 × 10⁶ Ω × CSRT (F), allowing precise customization for complex power-up sequences in systems using the MAX16007ETP+T.

Does the MAX16007ETP+T support adjustable voltage thresholds?

Yes, the MAX16007ETP+T supports adjustable thresholds on all eight input channels (IN1–IN8). Each input can be configured for fixed thresholds (e.g., 5V, 3.3V, 1.8V, 1.5V, 1.2V, 0.9V) or adjustable operation down to 0.4V, with accuracy of ±5% (TOL = GND) or ±10% (TOL = VCC). Input hysteresis is 0.5% of the selected threshold, ensuring noise immunity-key for stable operation of the MAX16007ETP+T in noisy power environments.

How does the watchdog timer operate in the MAX16007ETP+T?

The MAX16007ETP+T watchdog timer asserts the RESET output if the WDI input remains static (high or low) longer than 1.6s (typical). It features a 54s startup delay after reset to accommodate firmware initialization. The timer clears on any rising or falling edge at WDI. Leaving WDI unconnected disables the watchdog. This behavior ensures robust detection of firmware hangs while avoiding false triggers during boot-essential for reliable deployment of the MAX16007ETP+T in mission-critical servers.

What is the purpose of the MARGIN pin on the MAX16007ETP+T?

The MARGIN pin on the MAX16007ETP+T is an active-low input that forces all outputs (RESET and OUT1–OUT8) into a high-impedance (deasserted) state, regardless of input voltage conditions. This enables margin testing during production-allowing engineers to intentionally stress individual supply rails while holding the system in a known-safe state. No external components are needed, simplifying test fixture design for boards using the MAX16007ETP+T.

Can the MAX16007ETP+T operate reliably at low VCC levels?

Yes, the MAX16007ETP+T guarantees correct logic-state operation down to VCC = 1.0V, with full specification over VCC = 2.0V to 5.5V. Its internal circuitry remains functional and outputs retain defined states even as supply voltage drops below typical supervisor thresholds-critical for brown-out detection and graceful shutdown in battery-backed or energy-harvesting systems using the MAX16007ETP+T.