Analog Devices Inc./Maxim Integrated MAX16043TG+T

Overview

MAX16043TG+T from Maxim Integrated is a quad-voltage supervisor and sequencer in a 24-pin TQFN package, monitoring four independent supply rails (IN1–IN4) with logic-selectable thresholds (3.3V/2.5V/1.8V/1.5V/1.2V or adjustable down to 0.5V), ±1.5% accuracy for adjustable inputs, and capacitor-adjustable timing delays per channel. It delivers open-drain outputs (OUT1–OUT4) rated to 28V and a push-pull active-low RESET output, enabling precise power-up sequencing in multivoltage server and storage systems.

For engineers reviewing the MAX16043TG+T datasheet, MAX16043TG+T pinout, MAX16043TG+T application, or MAX16043TG+T equivalent, this page provides verified functional identity, validated pin roles, confirmed temperature range (−40°C to +125°C), exact threshold tolerances (5%/10%), and real-world sequencing use cases - all extracted from Maxim's official 2018 datasheet Rev 1.

Technical Context

The MAX16043TG+T implements four independent comparator-based voltage monitors, each with dedicated enable (EN1–EN4), capacitor-adjustable delay (CDLY1–CDLY4), and logic-selectable threshold via TH1/TH0/TOL pins - supporting nine fixed or adjustable input-voltage options. Its internal 250nA current source charges external CDLY capacitors to set IN-to-OUT propagation delays, while a separate 500nA CRESET current source controls reset timeout.

Each monitor drives an open-drain output (OUT1–OUT4) capable of sinking up to 1mA at VCC ≥ 4.5V, and the push-pull RESET output asserts low if any monitored voltage falls below threshold, any EN_ goes low, or MR is pulsed - deasserting only after all conditions are met and the timeout expires (140ms min or capacitor-adjustable).

Key Specifications

Pinout & Package

MAX16043TG+T uses a 24-pin, 4mm × 4mm thin QFN (TQFN) package with exposed pad (EP) internally connected to GND. Pin pitch is 0.5mm; recommended PCB land pattern is Maxim's 90-0070.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16042TP+, the MAX16043TG+T adds a fourth monitor channel and associated control pins, enabling full coverage of modern quad-rail processors; versus TPS3307-33DGNR, it offers field-programmable thresholds and analog-tunable delays - critical for mixed-voltage ASIC/FPGA platforms.

Availability

MAX16043TG+T is available at Aetrix Electronics and suitable for server power sequencing, storage system supervision, networking equipment reset control, and industrial multivoltage embedded systems requiring stable component supply across extended temperature ranges.

Supply support for MAX16043TG+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 and mixed-signal ICs for demanding industrial, automotive, and communications applications - emphasizing reliability, integration, and thermal robustness.

The MAX1604x family targets multivoltage system supervision and sequencing, delivering configurable monitoring, capacitor-based timing, and wide-VCC operation for servers, storage, and telecom infrastructure.

FAQ

What is the exact package type and pin count for MAX16043TG+T?

The MAX16043TG+T uses a 24-pin, 4mm × 4mm thin QFN (TQFN) package with exposed pad (EP), designated as T2444-4 per Maxim's package code. All 24 pins are electrically assigned - including four IN_, four EN_, four CDLY_, four OUT_, plus VCC, GND, RESET, MR, CRESET, TH0, TH1, and TOL - with no NC pins.

Does MAX16043TG+T support adjustable voltage thresholds, and what is the accuracy?

Yes, MAX16043TG+T supports adjustable thresholds down to 0.5V with ±1.5% accuracy over temperature (−40°C to +125°C). When TOL = GND, the adjustable threshold is 0.492V–0.508V; when TOL = VCC, it is 0.463V–0.481V. Fixed thresholds (e.g., 3.3V, 2.5V) maintain ±2.7% accuracy across the full temperature range.

How does the capacitor-adjustable timing work on MAX16043TG+T?

MAX16043TG+T uses internal 250nA current sources to charge external capacitors on CDLY1–CDLY4 (for IN-to-OUT delay) and CRESET (for reset timeout). Delay time t = (1V / 250nA) × C_CDLY; reset timeout t_RP = (0.5V / 500nA) × C_CRESET. For example, a 100nF CDLY1 capacitor yields ~400ms delay, while 100nF on CRESET gives ~100ms timeout.

Can MAX16043TG+T drive 28V logic inputs directly?

Yes, MAX16043TG+T's open-drain outputs (OUT1–OUT4) are rated to 28V and can directly interface with enable/shutdown pins of DC-DC regulators operating up to that voltage. Each output sinks ≥0.5mA at VCC ≥ 4.5V with VOL ≤ 0.35V, allowing reliable low-level signaling into high-voltage control nodes without level-shifting circuitry.

What is the function of the MR pin on MAX16043TG+T, and how is it used?

The MR (Manual Reset) pin on MAX16043TG+T is an active-low input that forces RESET low when asserted. After MR is released, RESET remains low for the full timeout period (140ms min or capacitor-adjustable). MR has a 500nA internal pullup, accepts TTL/CMOS logic, and requires no external debounce - a simple momentary switch to GND suffices for field-service reset functionality in the MAX16043TG+T.