Analog Devices Inc./Maxim Integrated MAX16134NKQ/V+T

Overview

MAX16134NKQ/V+T from Analog Devices is a precision triple-voltage microprocessor supervisor IC designed for automotive ADAS systems. It monitors three independent supply rails (IN1, IN2, IN3) for undervoltage and overvoltage faults with ±1% threshold accuracy over -40°C to +125°C, factory-programmable nominal input voltages (1.0V–5.0V), and 23 selectable reset timeout periods up to 1200ms. Its active-low open-drain reset outputs (RESET1, RESET2, RESET3) ensure reliable system initialization in multivoltage ASICs and storage equipment.

For engineers reviewing the MAX16134NKQ/V+T datasheet, MAX16134NKQ/V+T pinout, MAX16134NKQ/V+T application, or MAX16134NKQ/V+T equivalent, key selection criteria include its triple-input window monitoring capability, AEC-Q100 qualification (/V suffix), SOT23-8 package footprint, guaranteed reset logic state down to VDD = 1.07V, and immunity to short monitored-supply transients - critical for functional safety–compliant automotive power sequencing.

Technical Context

The MAX16134NKQ/V+T implements independent comparator-based window supervision per input channel, where each INx pin is compared against a factory-trimmed undervoltage (UV) and overvoltage (OV) threshold derived from its nominal voltage and selected tolerance (±4% to ±11%). Hysteresis (0.25% or 0.50%) is applied to prevent chatter during threshold crossings.

All three reset outputs share a single factory-set timeout period (here: 560ms, per suffix 'T'), assert low when their respective input falls outside the UV/OV window, and remain asserted for the full timeout after re-entry into the valid window. The device operates from 1.71V to 5.5V VDD and guarantees correct reset output logic state down to VDD = 1.07V.

Key Specifications

Pinout & Package

MAX16134NKQ/V+T is housed in an 8-pin SOT23 package (package code K8+5A, outline 21-0078), optimized for space-constrained automotive PCB layouts. Pin 4 is GND; Pin 1 is VDD; Pins 2, 5, and 6 are dedicated to IN1, IN2, and IN3 respectively; Pin 7 is RESET3; Pin 8 is RESET1; RESET2 is not present on this triple-channel variant (only on MAX16135 quad version).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16133BFM/V+T, MAX16134NKQ/V+T adds a third independent monitoring channel without increasing footprint or supply current, enabling consolidation of three discrete supervisors. Compared with TLV809E33DBVR, it provides true window supervision, automotive qualification, and scalable multi-rail coverage - essential for ADAS functional safety compliance.

Availability

MAX16134NKQ/V+T is available at Aetrix Electronics and suitable for automotive ADAS modules, multivoltage ASIC power sequencing, and industrial storage controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16134NKQ/V+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.

The MAX16132–MAX16135 family was engineered specifically for automotive power integrity assurance - delivering precision window supervision, AEC-Q100 qualification, and compact packaging to meet stringent ASIL-B functional safety requirements in ADAS and domain controller applications.

FAQ

What is the function of the MAX16134NKQ/V+T in a power management system?

The MAX16134NKQ/V+T serves as a triple-voltage microprocessor supervisor that independently monitors three system supply rails (IN1, IN2, IN3) for undervoltage and overvoltage faults. When any input falls outside its factory-programmed window threshold, the corresponding reset output (RESET1, RESET2, or RESET3) asserts low and remains asserted for the 560ms timeout period after the rail returns to specification. This ensures reliable, sequenced system initialization in automotive ADAS and multivoltage ASIC applications.

How does the MAX16134NKQ/V+T achieve ±1% threshold accuracy over temperature?

The MAX16134NKQ/V+T achieves ±1% threshold accuracy over -40°C to +125°C through factory trimming of internal voltage references and comparator offsets during production test. This calibration compensates for process, voltage, and temperature (PVT) variations across the automotive temperature range, eliminating the need for external calibration or software compensation in safety-critical ADAS power monitoring.

What does the 'T' suffix in MAX16134NKQ/V+T indicate?

The 'T' suffix in MAX16134NKQ/V+T specifies the factory-programmed reset timeout period of 560ms (minimum), as defined in Table 9 of the datasheet. This timeout value is permanently set during manufacturing and determines how long each reset output remains asserted after its corresponding input voltage re-enters the valid undervoltage/overvoltage window.

Can unused input pins on the MAX16134NKQ/V+T be left floating?

No, unused input pins on the MAX16134NKQ/V+T must not be left floating. Per the Applications Information section, any unused IN_ input should be connected to its nominal voltage setting (e.g., tie IN2 to 1.8V if only IN1 and IN3 are used) to prevent false resets caused by noise coupling or undefined comparator states.

Is the MAX16134NKQ/V+T compatible with standard SOT23-8 footprints?

Yes, the MAX16134NKQ/V+T uses the industry-standard 8-pin SOT23 package (outline number 21-0078, land pattern 90-0176) and is fully compatible with standard SOT23-8 PCB footprints. Its pinout matches the mechanical and thermal specifications defined in JEDEC MO-178, supporting automated placement and reflow soldering in high-volume automotive manufacturing.