Analog Devices Inc./Maxim Integrated MAX16041TE+T

Overview

MAX16041TE+T from Maxim Integrated is a dual-voltage supervisor and sequencer in a 16-pin TQFN (4mm × 4mm) package, designed for precise power-rail monitoring and controlled startup sequencing in multivoltage systems. It monitors two independent input voltages (IN1/IN2), provides two open-drain outputs (OUT1/OUT2) supporting up to 28V pull-up, and features a push-pull active-low RESET output with fixed 140ms minimum or capacitor-adjustable timeout. It operates across 2.2V–28V supply range and is fully specified from –40°C to +125°C.

For engineers reviewing the MAX16041TE+T datasheet, MAX16041TE+T pinout, MAX16041TE+T application, or MAX16041TE+T equivalent, this device delivers configurable threshold selection (nine logic-selectable options), per-channel enable inputs (EN1/EN2), capacitor-adjustable delay timing (CDLY1/CDLY2), and tolerance-selectable thresholds (5% or 10%) - critical for robust power-good assertion in servers, storage, and telecom infrastructure.

Technical Context

The MAX16041TE+T implements independent comparator-based supervision for two voltage rails, each with programmable thresholds via TH0/TH1 logic inputs and tolerance selection via TOL pin. Its internal 250nA current source charges external CDLY capacitors to set IN-to-OUT propagation delays, while a separate 500nA current source on CRESET sets reset timeout.

Each monitored input supports fixed thresholds (3.3V, 2.5V, 1.8V, 1.5V, 1.2V) or adjustable thresholds down to 0.5V (±1.5% accuracy), with 2.7% fixed-threshold accuracy over temperature. The push-pull RESET output deasserts only after both IN1 and IN2 exceed their thresholds, all EN inputs are high, and MR is deasserted - ensuring synchronized system initialization.

Key Specifications

Pinout & Package

MAX16041TE+T is housed in a 16-pin, 4mm × 4mm thin quad flat no-lead (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 dual-voltage supervisory applications.

Compared with TPS3808G33DBVR and ADM1085AKSZ-REEL7, MAX16041TE+T uniquely supports dual-rail coordination, nine selectable thresholds, and capacitor-programmable delays - making it the only option capable of replacing discrete timing networks and multiple fixed supervisors in compact multivoltage systems.

Availability

MAX16041TE+T is available at Aetrix Electronics and suitable for server power sequencing, industrial DC-DC monitoring, and telecom line card supervision requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16041TE+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 MAX16041TE+T belongs to Maxim's high-accuracy supervisory and sequencing product line, engineered specifically for complex multivoltage system power-up coordination and rail validation in space-constrained, thermally harsh environments.

FAQ

What is the maximum input voltage the MAX16041TE+T can monitor on IN1 and IN2?

The MAX16041TE+T does not impose a direct upper limit on IN1/IN2 voltage - these pins tolerate up to (VCC + 0.3V) per Absolute Maximum Ratings. Since VCC operates up to 28V, IN1 and IN2 may safely accept voltages up to 28.3V referenced to GND. For higher-voltage rails (e.g., 48V), use an external resistor divider to scale the input within the 0.5V–3.3V threshold range while maintaining accuracy.

How do I configure the MAX16041TE+T to monitor 3.3V and 1.5V simultaneously?

Set TH1 = GND, TH0 = GND, and TOL = GND to select the "Low/Low" row in Table 2: IN1 = 3.3V (±5%), IN2 = 2.5V (±5%). To achieve 1.5V on IN2, reconfigure TH1 = Low, TH0 = Open (per Table 2: "Low/Open" gives IN2 = 1.5V). Confirm TOL remains at GND for 5% tolerance. No external components are needed - threshold selection is purely logic-driven.

Can the MAX16041TE+T's RESET output drive a microcontroller's reset pin directly?

Yes - the MAX16041TE+T's push-pull RESET output is compatible with standard CMOS/TTL reset inputs. With VCC ≥ 3V and sink/source current ≤ 500µA, VOH ≥ 0.8 × VCC and VOL ≤ 0.3V ensure valid logic-high and logic-low levels. For MCUs requiring >1mA drive strength, add a small buffer; for 3.3V systems, direct connection is fully supported per Electrical Characteristics.

What is the minimum capacitor value needed on CDLY1 to achieve a 100ms delay?

Using the delay equation tDELAY = (VTH-CDLY / ICH-CDLY) + (CCDLY × 35 × 10⁶), where VTH-CDLY = 1V and ICH-CDLY = 250nA, solving for CCDLY yields ≈ 2.86nF for 100ms. A 3.3nF ceramic capacitor is recommended to account for tolerance and leakage. Ensure CDLY1 is routed away from noisy traces and bypassed with 0.1µF to GND near the pin for timing stability.

Does the MAX16041TE+T require external pull-up resistors on OUT1 and OUT2?

Yes - OUT1 and OUT2 are open-drain outputs and require external pull-up resistors to a valid logic voltage (0V to 28V). For a 3.3V pull-up with 0.5mA sink current (per spec), use ≥6.6kΩ; for 28V pull-up, use ≥56kΩ to stay within VOL limits. Pull-up placement should be close to the load to minimize noise coupling, especially in high-speed or noisy environments.