Analog Devices Inc./Maxim Integrated MAX16006FTG+T

Overview

MAX16006FTG+T from Maxim Integrated is an octal-voltage microprocessor supervisor IC in a 24-pin TQFN (4mm × 4mm) package, monitoring 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 open-drain outputs, 140ms min reset timeout, watchdog timer (1.6s typ), and operation from −40°C to +125°C. It serves multivoltage ASICs and high-reliability server power sequencing.

For engineers reviewing the MAX16006FTG+T datasheet, MAX16006FTG+T pinout, MAX16006FTG+T application, or MAX16006FTG+T equivalent, key selection criteria include eight-rail monitoring capability, capacitor-adjustable reset timeout, integrated watchdog with 54s startup delay, tolerance-selectable 5%/10% thresholds, and guaranteed logic state down to VCC = 1V.

Technical Context

The MAX16006FTG+T implements independent voltage monitoring per rail with hysteresis (0.5% of threshold) and supports both fixed (5V/3.3V/2.5V/1.8V/1.5V/1.2V/0.9V) and adjustable (0.366V–0.400V) thresholds selected via TOL pin. Its watchdog timer asserts RESET upon timeout (1.12–2.40s) after a 54s startup window and clears on any WDI edge.

Reset assertion occurs when any monitored voltage falls below its threshold or MR is pulled low; RESET remains asserted for ≥140ms after all voltages recover and MR is released. All eight OUT_ outputs are open-drain with internal 30μA pullups, eliminating external resistors while supporting up to 5.5V drive voltage.

Key Specifications

Pinout & Package

MAX16006FTG+T is housed in a 24-pin TQFN package (4mm × 4mm, outline 21-0139, land pattern 90-0022) with exposed pad (EP) internally connected to GND for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16007ATJ+T and TPS389007DSGR, the MAX16006FTG+T uniquely combines eight-rail monitoring, adjustable thresholds down to 0.4V, integrated watchdog with startup delay, and margin enable-making it optimal for high-integrity server and networking platforms requiring comprehensive power validation and firmware supervision.

Availability

MAX16006FTG+T is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply, extended temperature operation (−40°C to +125°C), and long-term lifecycle support.

Supply support for MAX16006FTG+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 complex multivoltage systems-delivering scalable supervision (quad/hex/octal) with integrated features like watchdog timers, margin enable, and capacitor-adjustable reset timing to replace discrete solutions in servers and storage.

FAQ

What is the minimum operating voltage for MAX16006FTG+T to maintain valid logic states?

The MAX16006FTG+T guarantees correct logic state operation down to VCC = 1.0V, ensuring reliable reset assertion and output behavior even during severe brownout conditions. This specification is validated across the full −40°C to +125°C temperature range and applies to all eight monitored inputs, RESET, and OUT_ outputs. The internal bandgap reference and comparator circuitry remain functional at this low supply, making MAX16006FTG+T suitable for systems with aggressive low-power modes or unstable input rails.

How does the watchdog timer in MAX16006FTG+T behave during system power-up?

The MAX16006FTG+T watchdog timer incorporates a 35–72s startup delay (typical 54s) after RESET deassertion, preventing false timeouts during firmware initialization. During this window, no WDI transitions are required. Once the startup period expires, the timer begins counting and asserts RESET if WDI remains static beyond 1.12–2.40s (typical 1.6s). The timer clears on any rising or falling edge at WDI, and leaving WDI unconnected disables the watchdog entirely.

Can MAX16006FTG+T monitor a 0.9V supply rail, and what is the threshold accuracy?

Yes, MAX16006FTG+T supports a fixed 0.9V threshold with ±1.5% accuracy over temperature (−40°C to +125°C), as specified in Table 1 for variant MAX16006F. When TOL = GND, the threshold is 0.810–0.855V; when TOL = VCC, it is 0.765–0.810V. Hysteresis is 0.5% of the threshold (e.g., ~4mV), ensuring noise immunity. This capability enables direct supervision of modern low-voltage FPGA cores and AI accelerator analog domains without external resistor dividers.

What is the function of the MARGIN pin on MAX16006FTG+T, and how is it used in production testing?

The MARGIN pin on MAX16006FTG+T is an active-low input that deasserts all eight OUT_ outputs and RESET simultaneously-forcing them high regardless of input voltage conditions. In production, it enables margin testing: engineers temporarily lower supply rails while holding MARGIN low to verify system behavior under stress, then release MARGIN to restore normal supervision. The 50µs MARGIN delay (tMD) ensures clean, glitch-free output transitions, and the internal 20kΩ pullup simplifies test fixture wiring.

Does MAX16006FTG+T require external pullup resistors on its open-drain outputs?

No, MAX16006FTG+T integrates 30µA internal pullups on all eight OUT_ outputs and the RESET pin, eliminating the need for external pullup resistors. These pullups connect to VCC and support output voltages up to 5.5V-even when driven by external sources-reducing BOM count and PCB footprint. Each output can sink ≥10mA (RESET) or ≥2mA (OUT_) while maintaining VOL ≤ 0.3V, enabling direct interface with standard CMOS logic inputs.