Analog Devices Inc./Maxim Integrated MAX16004CTP+T

Overview

The MAX16004CTP+T from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 19-pin TQFN (4mm × 4mm) package. It monitors six independent supply rails-including fixed 3.3V, 2.5V, and 1.8V thresholds plus two adjustable inputs down to 0.4V-and provides six open-drain output channels with internal 30µA pullups, a shared active-low RESET output, watchdog timer (1.6s typical timeout), manual reset (MR), margin enable, and tolerance-select (5%/10%) functionality. It is used in multivoltage server power sequencing and ASIC supervisory systems.

For engineers reviewing the MAX16004CTP+T datasheet, MAX16004CTP+T pinout, MAX16004CTP+T application, or MAX16004CTP+T equivalent, key selection considerations include its six-rail monitoring capability, capacitor-adjustable 140ms–3.92ms reset timeout, guaranteed operation down to VCC = 1V, -40°C to +125°C temperature range, and integrated watchdog with 54s startup delay after reset assertion.

Technical Context

The MAX16004CTP+T implements a deterministic analog threshold-comparator architecture for each of its six monitored inputs (IN1–IN6), with hysteresis of 0.5% of threshold voltage. Its RESET output asserts when any input falls below its programmed threshold or MR is pulled low, and remains asserted for the full timeout period after all voltages recover and MR is released.

It integrates a watchdog timer that clears on any WDI edge and enters a 54s startup window before first timeout; the timer is disabled if WDI is left floating. All outputs are open-drain with internal 30µA pullups, supporting external voltage levels up to 5.5V, and the TOL pin selects 5% or 10% threshold tolerance per input group.

Key Specifications

Pinout & Package

Package: 19-pin TQFN (4mm × 4mm, exposed pad), outline number 21-0139, land pattern 90-0022. RoHS-compliant, thermal pad internally connected to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16004ATP+T and TPS386000RGPT, the MAX16004CTP+T delivers tighter threshold accuracy, capacitor-adjustable reset timing, and integrated watchdog with startup delay-critical for high-reliability server and storage platforms requiring precise power sequencing and runtime fault recovery.

Availability

MAX16004CTP+T is available at Aetrix Electronics and suitable for server power sequencing, enterprise storage equipment, and networking infrastructure requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +125°C operation.

Supply support for MAX16004CTP+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 in high-density computing platforms, emphasizing low quiescent current, wide supply range, and robust fault-handling features like margin enable and watchdog startup delay.

FAQ

What is the reset timeout behavior of the MAX16004CTP+T when multiple monitored voltages recover at different times?

The MAX16004CTP+T holds the RESET output low until all six monitored voltages (IN1–IN6) exceed their respective thresholds *and* the manual reset (MR) input is deasserted. Only then does the internal reset timeout timer begin counting. The RESET signal remains asserted for the full programmed timeout duration (e.g., 140ms minimum or longer if SRT capacitor is used), ensuring all downstream logic completes initialization before release. This behavior is confirmed in the Electrical Characteristics table under "RESET Output-Voltage Low" and "IN_ to Reset Delay" parameters.

Can the MAX16004CTP+T monitor a 0.9V supply rail, and what is the accuracy at that level?

Yes, the MAX16004CTP+T can monitor a 0.9V rail using its adjustable threshold mode. With TOL = GND (5% tolerance), the threshold is 0.810V–0.855V (typ 0.833V); with TOL = VCC (10% tolerance), it is 0.765V–0.810V (typ 0.788V). Accuracy is specified as ±2.5% over temperature and supply variation, per the "Adjustable Threshold" row in the Electrical Characteristics table. The device guarantees correct logic state down to VCC = 1V, ensuring reliable operation even when supervising sub-1V domains.

How does the watchdog timer in the MAX16004CTP+T interact with the manual reset (MR) input?

When MR is asserted (pulled low), the MAX16004CTP+T immediately asserts RESET and clears the watchdog timer. After MR is released, the watchdog enters its 54s startup delay window before beginning countdown. During this window, no WDI edge is required to prevent timeout. Once started, the timer resets on every valid WDI edge (rising or falling). If MR is reasserted during watchdog operation, the timer resets again and restarts the 54s window upon MR release. This interaction is explicitly documented in the "Watchdog Timer" section and Pin Description for WDI.

What is the maximum sink current supported by the RESET and OUTx outputs of the MAX16004CTP+T?

The RESET and all OUTx outputs of the MAX16004CTP+T are open-drain and rated for 10mA sink current at VCC = 3.3V (VOL ≤ 0.30V), 6mA at VCC = 2.5V, and 50µA at VCC = 1.2V. These values are specified in the "RESET Output-Voltage Low" and "OUT_ Output-Voltage Low" rows of the Electrical Characteristics table. Exceeding these limits may cause VOL to rise above specification, compromising noise margin in downstream logic interfaces.

Is the MAX16004CTP+T pin-compatible with other members of the MAX16000–MAX16007 family, such as the MAX16003 or MAX16005?

No, the MAX16004CTP+T is not pin-compatible with MAX16003 or MAX16005. It uses a 19-pin TQFN package, while MAX16003 is 16-pin TQFN and MAX16005 is offered in both 16-pin TSSOP and 16-pin TQFN variants. Pin counts, layouts, and functions differ significantly-for example, MAX16005 includes REF and WDO pins absent in MAX16004CTP+T. The Pin Configurations section confirms distinct top-view diagrams and pin numbering across the family. Substitution requires PCB redesign.