Analog Devices Inc./Maxim Integrated MAX16005CTE+T

Overview

The MAX16005CTE+T from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 16-pin TSSOP package. It monitors six independent supply rails (IN1–IN6) with fixed thresholds for 3.3V, 2.5V, 1.8V, and adjustable thresholds down to 0.4V, provides an independent watchdog output (WDO), a precision 1.235V reference (REF), and a reset output (RESET) asserting when any monitored voltage falls below its threshold or MR is asserted. It is used in multivoltage server power sequencing and storage controller supervision.

For engineers reviewing the MAX16005CTE+T datasheet, MAX16005CTE+T pinout, MAX16005CTE+T application, or MAX16005CTE+T equivalent, key selection criteria include its six-rail monitoring capability, independent WDO function (distinct from RESET), integrated 1.235V reference with ±0.035V accuracy, capacitor-adjustable reset timeout (140ms min), and operation across –40°C to +125°C.

Technical Context

The MAX16005CTE+T implements a dual-output supervisory architecture: RESET asserts on any undervoltage condition or MR assertion with a minimum 140ms timeout (internally set or capacitor-adjustable via SRT), while WDO asserts independently upon watchdog timeout (1.6s typ) without startup delay-unlike other family members. Its REF output delivers 1.235V ±0.035V with load regulation ≤10Ω up to 40µA, enabling precise margining and ADC reference use.

All six IN_ inputs support programmable 5% or 10% threshold tolerance via the TOL pin; each open-drain output (OUT1–OUT6, RESET, WDO) includes a 30µA internal pullup, eliminating external resistors. The device guarantees correct logic state down to VCC = 1V and supports manual margin enable (MARGIN pin) for test-mode deassertion of all outputs.

Key Specifications

Pinout & Package

MAX16005CTE+T is supplied in a 16-pin TSSOP package (outline 21-0066, land pattern 90-0117), with exposed pad 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 MAX16005ATE+T, the MAX16005CTE+T offers identical supervision functionality in a larger TSSOP package suited for hand-soldering and thermal relief; compared with TPS3808G33DBVR, it delivers six-rail monitoring, precision reference, and independent watchdog-enabling consolidated supervision in complex multivoltage systems.

Availability

MAX16005CTE+T is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across industrial temperature ranges and long-term production continuity.

Supply support for MAX16005CTE+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, computing, and communications applications.

The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision in servers, storage, and telecom infrastructure-delivering scalable rail counts (4/6/8), integrated references, and independent watchdog outputs without compromising temperature range or reliability.

FAQ

What is the reference voltage accuracy of the MAX16005CTE+T?

The MAX16005CTE+T provides a precision reference output (REF pin) with a nominal value of 1.235V and a guaranteed accuracy of ±0.035V (1.200V to 1.270V) over the full –40°C to +125°C temperature range and 0–40µA load. This accuracy enables reliable margin testing and high-resolution ADC reference applications without external trimming.

Does the MAX16005CTE+T support adjustable reset timeout?

Yes, the MAX16005CTE+T supports both fixed and adjustable reset timeout. With SRT tied to VCC, the minimum timeout is 140ms. Connecting an external capacitor (CSRT) from SRT to GND extends the timeout per the formula tRP = 2.06 × 10⁶ × CSRT; for example, 1500pF yields ~3.09ms. The MAX16005CTE+T datasheet specifies min/max values across temperature and process variation.

How does the watchdog function differ between MAX16005CTE+T and other MAX16000-series parts?

The MAX16005CTE+T features an independent watchdog output (WDO) that asserts only on WDI timeout (1.6s typ), with no startup delay. In contrast, MAX16001/MAX16002/MAX16004–MAX16007 assert RESET on watchdog timeout and include a 54s startup delay. This makes MAX16005CTE+T ideal for applications requiring immediate, isolated watchdog signaling without interfering with power-fault reset behavior.

Can the MAX16005CTE+T monitor voltages below 1.0V?

Yes, the MAX16005CTE+T supports adjustable thresholds down to 0.4V (typical) on all six IN_ inputs. When configured for adjustable mode (via TOL pin and external resistor divider), it accurately monitors sub-1V rails such as 0.85V GPU cores or 0.75V AI accelerator domains-maintaining 0.5% hysteresis and <100nA input current for minimal loading.

What is the purpose of the MARGIN pin on the MAX16005CTE+T?

The MARGIN pin on the MAX16005CTE+T is an active-low input that forces all outputs (OUT1–OUT6, RESET, WDO) into a high-impedance or high state-regardless of input voltage conditions-enabling controlled deassertion during system margin testing. Pulling MARGIN low overrides all fault conditions, allowing engineers to validate system behavior under intentional rail derating without triggering spurious resets.