Analog Devices Inc./Maxim Integrated MAX16001DTE+

Overview

MAX16001DTE+ from Maxim Integrated is a quad-voltage microprocessor supervisor IC in a 16-pin TQFN (4mm × 4mm) package, monitoring four independent supply rails (3.3V, 2.5V, adjustable, and adjustable) with ±5% or ±10% threshold tolerance selectable via the TOL pin. It features an active-low RESET output asserting on any undervoltage or manual reset, a 140ms minimum reset timeout (capacitor-adjustable), integrated 30µA internal pullups on all open-drain outputs, and a watchdog timer with 1.6s typical timeout and 54s startup delay - used in multivoltage server power sequencing.

For engineers reviewing the MAX16001DTE+ datasheet, MAX16001DTE+ pinout, MAX16001DTE+ application, or MAX16001DTE+ equivalent, key selection considerations include its AEC-Q100 qualification (DTE/V+ variants), guaranteed correct logic state down to VCC = 1V, fixed and adjustable voltage thresholds (0.4V–5V range), and compatibility with -40°C to +125°C industrial and automotive environments.

Technical Context

The MAX16001DTE+ implements a deterministic reset assertion architecture: RESET goes low when any of the four monitored voltages falls below its threshold or MR is pulled low, and remains asserted for the full reset timeout period after all voltages recover and MR is released. Its watchdog timer initiates a 54s startup window before first timeout monitoring, clears on any WDI edge, and asserts RESET if no transition occurs within 1.6s (typ).

Threshold detection uses precision bandgap references with <±1% total accuracy over temperature and supply, supported by hysteresis (0.5% of VTH) and input leakage <±100nA for adjustable inputs. All outputs are open-drain with internal 30µA pullups, enabling direct interfacing to 1.2V–5.5V logic without external resistors while tolerating up to 5.5V drive voltage.

Key Specifications

Pinout & Package

MAX16001DTE+ is housed in a 16-pin TQFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND for thermal management. Pin 1 is located at the top-left corner adjacent to the pin-1 marker.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16001ATE+, the MAX16001DTE+ offers identical supervision capability but different packaging logistics; versus TPS3307-33D, it delivers true quad-rail flexibility, adjustable thresholds, and watchdog functionality essential for complex ASIC and server platforms.

Availability

MAX16001DTE+ is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across extended temperature ranges and automotive-grade reliability.

Supply support for MAX16001DTE+ 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 space-constrained, high-reliability environments - emphasizing low quiescent current, wide temperature operation, and flexible threshold configuration.

FAQ

What voltage thresholds does the MAX16001DTE+ monitor by default?

The MAX16001DTE+ monitors four rails with factory-configured thresholds: IN1 = 3.3V, IN2 = 2.5V, IN3 = adjustable (0.4V–5V), and IN4 = adjustable (0.4V–5V). Threshold tolerance is selectable via the TOL pin (±5% at GND, ±10% at VCC). These values are confirmed in Table 1 of the MAX16001DTE+ datasheet and apply specifically to the "D" variant.

Does the MAX16001DTE+ support watchdog functionality, and how is it configured?

Yes, the MAX16001DTE+ includes a watchdog timer with a 1.6s typical timeout and 54s startup delay after reset. It is enabled by connecting WDI to a toggling signal; leaving WDI floating disables it. The timer clears on any rising or falling edge and asserts RESET if no transition occurs within the timeout window - a verified behavior documented in the MAX16001DTE+ Electrical Characteristics table.

What is the purpose of the MARGIN pin on the MAX16001DTE+?

The MARGIN pin on the MAX16001DTE+ is an active-low input that deasserts all outputs (drives them high) regardless of monitored voltage states, enabling controlled margin testing. When pulled low, it overrides undervoltage conditions to simulate nominal operation during system validation - a function explicitly defined in the MAX16001DTE+ Pin Description table and confirmed in typical operating waveforms.

Can the MAX16001DTE+ operate reliably at VCC = 1.2V?

Yes, the MAX16001DTE+ guarantees correct logic state and full supervisory functionality down to VCC = 1.0V, as stated in Note 2 of the Absolute Maximum Ratings section. At VCC = 1.2V, all specifications - including RESET output low voltage (≤0.30V at 50µA sink), threshold accuracy, and watchdog timing - remain valid across the full -40°C to +125°C temperature range.

Is the MAX16001DTE+ pin-compatible with other devices in the MAX16000–MAX16007 family?

No, the MAX16001DTE+ is not universally pin-compatible across the family. While it shares the 16-pin TQFN footprint with MAX16001ATE+, MAX16002 variants, and MAX16005 TQFN, pin functions differ - e.g., MAX16005 includes REF and WDO pins absent in MAX16001DTE+. Pin compatibility is limited to same-part-number variants (e.g., MAX16001DTE+ ↔ MAX16001ATE+) as confirmed in the Pin Configurations section.