Analog Devices Inc./Maxim Integrated MAX16132F04E/V+T

Overview

MAX16132F04E/V+T from Analog Devices is a quad-voltage microprocessor supervisor IC designed for automotive ADAS systems. It monitors four independent supply rails (IN1–IN4) for undervoltage and overvoltage faults with ±1% threshold accuracy over -40°C to +125°C, factory-programmable nominal input voltages (1.0V–5.0V), ±4% to ±11% window tolerance, and 560ms reset timeout period. Its open-drain active-low reset outputs ensure reliable power-on reset sequencing in multivoltage ASICs.

For engineers reviewing the MAX16132F04E/V+T datasheet, MAX16132F04E/V+T pinout, MAX16132F04E/V+T application, or MAX16132F04E/V+T equivalent, this device delivers precise window supervision for safety-critical automotive electronics where guaranteed logic state down to VDD = 1.07V, immunity to short supply transients, and AEC-Q100 qualification are required.

Technical Context

The MAX16132F04E/V+T implements a quad-input window monitoring architecture with independent comparators per channel, each featuring factory-trimmed UV/OV thresholds referenced to its nominal input voltage. All four inputs share a single 560ms reset timeout period, and reset assertion occurs when any monitored voltage falls outside its programmed window.

It uses internal voltage references with ±1% accuracy over temperature and supports 0.25% or 0.50% hysteresis per input to reject noise while maintaining tight threshold control. The device operates from 1.71V to 5.5V VDD and guarantees correct reset output logic state down to VDD = 1.07V - critical for low-voltage automotive rail integrity verification.

Key Specifications

Pinout & Package

MAX16132F04E/V+T is housed in an 8-pin SOT23 package (package code K8+5/K8+5A, outline 21-0078), optimized for space-constrained automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16135F04E/V+T, the MAX16132F04E/V+T offers identical supervision parameters but different reset output assignment logic; versus TPS3808G33DBVR, it provides four-channel window monitoring at higher supply current but enables comprehensive multirail fault coverage in a single device.

Availability

MAX16132F04E/V+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, multivoltage ASIC power sequencing, and industrial server management controllers requiring stable component supply with AEC-Q100 compliance and extended temperature operation.

Supply support for MAX16132F04E/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 consumer markets with precision signal chain solutions.

The MAX16132–MAX16135 product line was engineered specifically for automotive-grade power integrity monitoring, delivering high-accuracy window supervision to meet ASIL-B functional safety requirements in ADAS and domain controller applications.

FAQ

What is the nominal input voltage programmed into the MAX16132F04E/V+T?

The MAX16132F04E/V+T is factory-programmed with a nominal input voltage of 1.240V for all four monitoring inputs (IN1–IN4), as indicated by the "04" suffix in the part number. This value serves as the reference point for calculating undervoltage (1.240V × 0.96 = 1.190V) and overvoltage (1.240V × 1.04 = 1.290V) thresholds based on the ±4% tolerance setting ("E" suffix). Each input channel uses this same nominal voltage and tolerance.

How does the reset timeout period of the MAX16132F04E/V+T affect system startup timing?

The MAX16132F04E/V+T features a factory-set minimum reset timeout period of 560ms (suffix "T"), meaning the RESET1 and RESET2 outputs remain asserted for at least that duration after all monitored inputs enter their valid window. This ensures sufficient hold time for microcontrollers and FPGAs to complete internal initialization, PLL locking, and memory training before release. The timeout begins once VDD exceeds the 1.50V UVLO threshold and is independent of input voltage transitions during the delay.

Is the MAX16132F04E/V+T qualified for automotive applications?

Yes, the MAX16132F04E/V+T carries the "/V" suffix indicating AEC-Q100 qualification for automotive applications. It is specified over the full -40°C to +125°C junction temperature range and designed to meet reliability and stress-test requirements for under-hood and ADAS electronic control units. Its ±1% threshold accuracy over temperature and guaranteed correct reset logic state down to VDD = 1.07V further support functional safety goals in automotive systems.

What is the function of the open-drain reset outputs on the MAX16132F04E/V+T?

The MAX16132F04E/V+T provides two active-low open-drain reset outputs (RESET1 and RESET2), each requiring an external pullup resistor to VDD or another logic rail. RESET1 asserts when either IN1 or IN2 falls outside its ±4% window; RESET2 asserts when either IN3 or IN4 falls outside its window. This architecture allows flexible reset bus design - multiple devices can share a common reset line via wired-OR connection, and the outputs interface directly with microcontrollers having either active-low or active-high reset inputs (using inverted logic).

Can unused input pins on the MAX16132F04E/V+T be left floating?

No, unused input pins on the MAX16132F04E/V+T must not be left floating. Per the datasheet Applications Information section, any unused IN_ input should be connected to its nominal voltage setting (1.240V for this variant) to prevent false reset assertions caused by noise or leakage currents. Floating inputs may drift into the undervoltage or overvoltage window, triggering unintended reset events and compromising system reliability - especially critical in automotive safety applications where the MAX16132F04E/V+T is deployed.