Analog Devices Inc./Maxim Integrated MAX16041TE+

Overview

MAX16041TE+ from Maxim Integrated is a dual-voltage supervisor and sequencer in a 16-pin TQFN package, monitoring two independent supply rails (e.g., 3.3V and 2.5V) with ±1.5% adjustable threshold accuracy down to 0.5V and fixed thresholds with 2.7% accuracy over temperature. It provides capacitor-adjustable delay timing (via CDLY1/CDLY2), independent open-drain outputs (OUT1/OUT2) supporting up to 28V pull-up, and a push-pull active-low RESET output. It is used in multivoltage server power sequencing where precise voltage monitoring and controlled startup order are required.

For engineers reviewing the MAX16041TE+ datasheet, MAX16041TE+ pinout, MAX16041TE+ application, or MAX16041TE+ equivalent, key selection considerations include its dual-monitor capability, logic-selectable 9-threshold options via TH1/TH0, tolerance select (5%/10%) via TOL pin, manual reset (MR) input, and operation across –40°C to +125°C in high-reliability industrial systems.

Technical Context

The MAX16041TE+ implements four independent comparator channels configured as two monitored inputs (IN1/IN2), each with dedicated enable (EN1/EN2), capacitor-adjustable delay (CDLY1/CDLY2), and open-drain output (OUT1/OUT2). Its internal reference and logic-selectable threshold architecture supports nine combinations - including fixed 3.3V/2.5V/1.8V/1.5V/1.2V and adjustable sub-1V options - determined by TH1/TH0/TOL states.

It integrates a push-pull RESET output that deasserts only after both monitored voltages exceed their thresholds, with timeout configurable either internally (140ms min) or externally via CRESET capacitor. Propagation delays are tightly specified: 20–35µs for IN-to-OUT transitions and 35µs for IN-to-RESET, enabling deterministic power-up sequencing in complex DC-DC supply trees.

Key Specifications

Pinout & Package

MAX16041TE+ uses a 4mm × 4mm, 16-pin TQFN package (T1644-4) with exposed pad (EP) connected to GND. The package supports reflow soldering per JEDEC J-STD-020 and is lead-free (+ suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16042TP+ and TPS3808G33DBVR, the MAX16041TE+ uniquely balances dual-rail supervision with full configurability - offering nine threshold options, capacitor-adjustable delays, and 28V-tolerant outputs - making it optimal for compact, multivoltage systems requiring design reuse and field adaptability.

Availability

MAX16041TE+ is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC management, telecom line card supervision, and automotive ADAS domain controller applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16041TE+ 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 MAX16041TE+ belongs to Maxim's high-accuracy, capacitor-timed supervisory product line - engineered specifically for multivoltage system power sequencing where flexibility, reliability, and extended temperature operation are mandatory.

FAQ

What is the function of the TOL pin on the MAX16041TE+?

The TOL pin on the MAX16041TE+ selects threshold tolerance: connecting TOL to GND sets thresholds 5% below nominal voltage, while connecting to VCC sets them 10% below. This allows the MAX16041TE+ to match system-level power supply tolerance requirements without external calibration. Leaving TOL unconnected is not permitted, as it may cause undefined threshold behavior.

Can the MAX16041TE+ monitor voltages below 1.2V?

Yes, the MAX16041TE+ supports adjustable thresholds down to 0.5V when configured in adjustable mode using TH1/TH0 and an external resistor divider on IN1 or IN2. In this mode, the internal reference is 0.472V (TOL = VCC) or 0.5V (TOL = GND), enabling accurate monitoring of sub-1V core rails such as 0.85V or 0.9V FPGA supplies.

How does the CRESET pin affect the reset timeout period of the MAX16041TE+?

The CRESET pin on the MAX16041TE+ controls reset timeout: tying CRESET to VCC activates the internal 140ms minimum timeout, leaving it open yields propagation-delay-only reset, and connecting a capacitor from CRESET to GND sets a custom timeout per t_RP = (0.5V / 500nA) + (C_CRESET × 30µs/pF). This gives designers precise control over system initialization timing without additional components.

What is the maximum sink current supported by the open-drain outputs of the MAX16041TE+?

The open-drain outputs (OUT1 and OUT2) of the MAX16041TE+ guarantee ≤0.3V low-level voltage when sinking 90µA (VCC ≥ 1.2V), ≤0.3V at 0.5mA (VCC ≥ 2.25V), and ≤0.35V at 1mA (VCC ≥ 4.5V). This allows direct interfacing with enable inputs of most DC-DC regulators, including those requiring ≥100µA pull-down current for reliable disable.

Is the MAX16041TE+ compatible with 28V supply rails?

Yes, the MAX16041TE+ operates with VCC from 2.2V to 28V and supports 28V-tolerant open-drain outputs (OUT1/OUT2), enabling direct connection to high-side enable pins of industrial DC-DC converters. Its absolute maximum VCC rating is +30V, and OUT/RESET pins withstand up to +30V - making the MAX16041TE+ suitable for 24V industrial and telecom power systems.