Analog Devices Inc./Maxim Integrated MAX16133HIB/V+T

Overview

MAX16133HIB/V+T from Analog Devices is a precision dual-voltage microprocessor supervisor IC designed for automotive ADAS systems. It monitors two independent supply rails (IN1 and IN2) for undervoltage and overvoltage faults within ±1% threshold accuracy over temperature, features active-low open-drain reset outputs with factory-programmable 560ms timeout, and operates across -40°C to +125°C in an 8-pin SOT23 package.

For engineers reviewing the MAX16133HIB/V+T datasheet, MAX16133HIB/V+T pinout, MAX16133HIB/V+T application, or MAX16133HIB/V+T equivalent, this device supports functional safety-critical voltage monitoring in multivoltage ASICs and storage equipment where windowed fault detection, low quiescent current (12.5μA typ), and AEC-Q100 qualification are required.

Technical Context

The MAX16133HIB/V+T implements dual independent voltage comparators with factory-trimmed window thresholds-each defined by a nominal input voltage (programmable 1.0V–5.0V) and ±4% to ±11% tolerance-with ±1% accuracy over full automotive temperature range. Its internal reference and trimming architecture ensures stable UV/OV detection despite supply transients.

Reset logic uses a shared 560ms factory-set timeout period (suffix "T") and guarantees correct output state down to VDD = 1.07V. All inputs are immune to short-duration monitored-supply transients, and outputs require external pullup resistors due to open-drain configuration.

Key Specifications

Pinout & Package

MAX16133HIB/V+T is housed in an 8-pin SOT23 package (package code 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 dual-voltage supervisor applications.

Compared with MAX16133BFM/V+T and TPS3808G33DBVR, the MAX16133HIB/V+T delivers tighter ±4% window tolerance, longer 560ms reset hold for robust automotive startup, and native dual-rail supervision - reducing board area and improving fault coverage in ASIL-B designs.

Availability

MAX16133HIB/V+T is available at Aetrix Electronics and suitable for ADAS camera modules, multivoltage ASICs, and automotive storage equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16133HIB/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 technologies, serving automotive, industrial, communications, and healthcare markets.

The MAX16132–MAX16135 product line delivers precision voltage supervision for safety-critical automotive systems, with emphasis on AEC-Q100 qualification, ±1% threshold accuracy, and multirail window monitoring capability.

FAQ

What is the nominal input voltage configuration for MAX16133HIB/V+T?

The "HI" suffix in MAX16133HIB/V+T specifies IN1 = 3.300V and IN2 = 1.800V nominal input voltages per the Dual-Input Nominal Voltage Options table. These values define the center points of the undervoltage and overvoltage windows, with actual thresholds calculated as VIN_NOM × (1 ± tolerance), where tolerance is ±4% (suffix "B").

Does MAX16133HIB/V+T support overvoltage detection on both inputs?

Yes, MAX16133HIB/V+T performs independent windowed monitoring on both IN1 and IN2, detecting both undervoltage and overvoltage faults per input. RESET1 asserts when IN1 falls outside its programmed window, and RESET2 asserts when IN2 falls outside its programmed window - neither output is affected by the other's fault condition.

What is the function of pins 7 and 8 on MAX16133HIB/V+T?

Pins 7 and 8 of MAX16133HIB/V+T are no-connect (N.C.) terminals. Per the datasheet Pin Descriptions section, these pins must be connected to ground to ensure proper operation and thermal performance - they are not left floating or tied to VDD.

How does the 560ms reset timeout in MAX16133HIB/V+T get implemented?

The 560ms minimum reset timeout in MAX16133HIB/V+T is factory-programmed and fixed (suffix "T" per Table 9). It applies identically to both RESET1 and RESET2 outputs and begins timing upon VDD crossing the UVLO threshold (1.50V typ); the reset remains asserted until the monitored input re-enters its window and the full timeout elapses.

Is MAX16133HIB/V+T qualified for automotive applications?

Yes, MAX16133HIB/V+T carries the "/V" suffix indicating AEC-Q100 qualification for automotive Grade 0 (-40°C to +125°C), and it is explicitly listed in the Ordering Information table with that temperature range and qualification status - making it suitable for under-hood and ADAS deployment.