Analog Devices Inc./Maxim Integrated MAX16005CTE+

Overview

The MAX16005CTE+ from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 16-pin TSSOP package, monitoring six independent supply rails (VIN1–VIN6) with fixed and adjustable thresholds (e.g., 3.3V, 2.5V, 1.8V, down to 0.4V), featuring an independent watchdog output (WDO), reference output (REF = 1.235V), and reset timeout programmable via external capacitor. It serves multivoltage ASICs and server power sequencing.

For engineers reviewing the MAX16005CTE+ datasheet, MAX16005CTE+ pinout, MAX16005CTE+ application, or MAX16005CTE+ equivalent, key selection criteria include its six-rail monitoring capability, independent WDO assertion on watchdog timeout (1.6s typ), REF output accuracy (±0.035V), TSSOP-16 thermal performance (−40°C to +125°C), and absence of watchdog startup delay - distinguishing it from MAX16004/MAX16006 variants.

Technical Context

The MAX16005CTE+ implements a dual-path supervisory architecture: one path monitors six input voltages (IN1–IN6) with user-selectable 5% or 10% threshold tolerance via TOL pin, and asserts RESET low if any falls below its threshold; the second path uses WDI to trigger WDO (not RESET) on watchdog timeout, with no 54s startup delay. Its REF output provides a stable 1.235V reference with ±0.035V accuracy over temperature and load.

All six monitored inputs support hysteresis (0.5% V_TH), and each open-drain output (OUT1–OUT6, RESET, WDO) includes a 30µA internal pullup - eliminating external resistors while allowing drive up to 5.5V. The SRT pin enables capacitor-adjustable reset timeout (140ms min to >1s), and MARGIN enables active-low deassertion of all outputs during margin testing.

Key Specifications

Pinout & Package

MAX16005CTE+ is housed in a 16-pin TSSOP package (outline 21-0066, land pattern 90-0117) with exposed thermal pad internally connected to GND. Pin 1 is IN2; pin 16 is VCC. The package supports reflow soldering at +260°C and lead-free assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16004CTE+, MAX16005CTE+ delivers isolated watchdog signaling and zero-startup-delay timing; compared with MAX16005ATE+, it offers identical supervision functionality in a larger, more manufacturable TSSOP package with easier thermal management via exposed pad grounding.

Availability

MAX16005CTE+ is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MAX16005CTE+ 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 industrial, computing, and communications markets.

The MAX16000–MAX16007 family was engineered specifically for complex multivoltage systems in servers and storage, delivering integrated rail monitoring, flexible reset timing, and watchdog supervision in compact packages.

FAQ

What is the reference voltage accuracy of the MAX16005CTE+?

The MAX16005CTE+ provides a precision 1.235V reference output (REF pin) with guaranteed accuracy of 1.200V to 1.270V over −40°C to +125°C and load currents up to 40µA. This ±0.035V tolerance enables direct use as a calibration reference for ADCs or voltage comparators without external trimming components. The MAX16005CTE+ REF output exhibits <0.005%/V line regulation and maintains stability under varying VCC conditions.

Does the MAX16005CTE+ have a watchdog startup delay?

No, the MAX16005CTE+ does not implement a watchdog startup delay. Unlike MAX16004CTE+ or MAX16006CTE+, which require a 54s window for the first WDI transition before watchdog timing begins, the MAX16005CTE+ starts counting immediately after the reset timeout period ends. This allows faster detection of firmware stalls in time-critical applications. The MAX16005CTE+ WDO output asserts low within 1.12–2.40s of WDI inactivity.

How many voltage rails does the MAX16005CTE+ monitor?

The MAX16005CTE+ monitors six independent voltage rails: VIN1 through VIN6. Each input supports either factory-configured fixed thresholds (e.g., 3.3V, 2.5V, 1.8V) or adjustable thresholds down to 0.4V, selected per part variant (e.g., MAX16005C supports 3.3V/2.5V/ADJ/1.8V/ADJ/ADJ). Threshold tolerance (5% or 10%) is controlled by the TOL pin, and all inputs feature 0.5% hysteresis for noise immunity.

What package type is used for the MAX16005CTE+?

The MAX16005CTE+ is supplied in a 16-pin TSSOP package (5mm × 4.4mm footprint, outline 21-0066) with an exposed thermal pad internally connected to GND. This package supports standard reflow soldering profiles (peak +260°C) and provides robust thermal performance across −40°C to +125°C operation. The TSSOP variant offers easier optical inspection and hand-soldering than the pin-compatible TQFN option (MAX16005ATE+).

Can the reset timeout period of the MAX16005CTE+ be adjusted?

Yes, the reset timeout period of the MAX16005CTE+ is fully adjustable via an external capacitor on the SRT pin. With SRT tied to VCC, the device defaults to a minimum 140ms timeout. Connecting a capacitor (CSRT) from SRT to GND extends the timeout according to t_RP = 2.06 × 10⁶ Ω × C_SRT (F), enabling precise tuning from ~200ms to several seconds. The MAX16005CTE+ datasheet provides verified values: 1500pF yields ~3.09ms, and 100pF yields ~0.206ms.