Analog Devices Inc./Maxim Integrated MAX16133AEG/V+T

Overview

MAX16133AEG/V+T from Analog Devices is a dual-channel, precision voltage supervisor IC designed for automotive ADAS and multivoltage ASIC monitoring. It features ±1% threshold accuracy over -40°C to +125°C, factory-programmable nominal input voltages (IN1 = 5.0V, IN2 = 3.3V), ±4% window tolerance with 0.5% hysteresis, and a 20µs minimum reset timeout period. The device asserts active-low, open-drain RESET1 and RESET2 outputs when either monitored supply falls outside its undervoltage/overvoltage window.

For engineers reviewing the MAX16133AEG/V+T datasheet, MAX16133AEG/V+T pinout, MAX16133AEG/V+T application, or MAX16133AEG/V+T equivalent, this page delivers verified specifications, automotive-grade timing behavior, dual independent reset logic, SOT23-8 package layout, and functional alternatives for multirail power integrity validation in safety-critical systems.

Technical Context

The MAX16133AEG/V+T implements two independent window-comparator channels, each with factory-trimmed UV/OV thresholds referenced to its nominal input voltage (IN1_NOM = 5.0V, IN2_NOM = 3.3V) and ±4% tolerance. Each channel uses a dedicated internal reference and comparator with 0.5% hysteresis to reject short transients while maintaining ±1% total threshold accuracy across temperature.

Both RESET1 and RESET2 are active-low, open-drain outputs sharing a single factory-set 20µs minimum timeout period. The device operates from 1.71V to 5.5V VDD, guarantees correct reset state down to VDD = 1.07V, and draws only 12.5µA typical supply current - enabling low-power system supervision without compromising response fidelity.

Key Specifications

Pinout & Package

MAX16133AEG/V+T is housed in an 8-pin SOT23 package (package code K8+5A, outline 21-0078), optimized for space-constrained automotive PCB layouts and qualified per AEC-Q100 Grade 0 (-40°C to +125°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16133AEG/V+T, MAX16133BFM/V+T offers identical form factor and dual supervision but targets lower-voltage logic rails, while TLV809E33DBVR provides simpler, lower-cost single-rail supervision at the expense of automotive qualification, OV detection, and timing flexibility.

Availability

MAX16133AEG/V+T is available at Aetrix Electronics and suitable for ADAS camera modules, multivoltage ASIC power sequencing, and automotive infotainment head units requiring stable component supply with AEC-Q100 traceability and extended temperature support.

Supply support for MAX16133AEG/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 ADAS and safety-critical multirail systems, delivering precision window supervision with guaranteed ±1% accuracy across extreme temperatures and transient immunity.

FAQ

What is the factory-programmed nominal input voltage configuration for MAX16133AEG/V+T?

The MAX16133AEG/V+T is configured with IN1_NOM = 5.000V and IN2_NOM = 3.300V, as indicated by the "AEG" suffix per the Selector Guide. These values define the center points of its ±4% undervoltage/overvoltage windows - resulting in trip thresholds of 4.800V/5.200V for IN1 and 3.168V/3.432V for IN2, with ±1% accuracy over temperature.

Does MAX16133AEG/V+T support overvoltage detection on both inputs?

Yes, MAX16133AEG/V+T performs full window supervision on both IN1 and IN2 - detecting both undervoltage and overvoltage faults independently. Each input has symmetric ±4% tolerance, so IN1 triggers RESET1 if voltage drops below 4.800V or exceeds 5.200V, and IN2 triggers RESET2 if voltage drops below 3.168V or exceeds 3.432V.

What is the reset timeout period for MAX16133AEG/V+T, and is it configurable?

The MAX16133AEG/V+T has a factory-set minimum reset timeout period of 20µs, denoted by the "A" suffix in its ordering code. This timeout is fixed and not user-adjustable; all reset outputs (RESET1 and RESET2) share this identical timeout value, ensuring synchronized release after fault clearance.

Can unused input pins on MAX16133AEG/V+T be left floating?

No - unused input pins must not be left floating. Per the Applications Information section, any unused IN_ input should be connected to its nominal voltage setting (e.g., 5.0V or 3.3V) to prevent false resets caused by noise coupling. For MAX16133AEG/V+T, both IN1 and IN2 are used, so no floating inputs apply; pins 7 and 8 are N.C. and should be tied to GND.

Is MAX16133AEG/V+T qualified for automotive applications?

Yes, MAX16133AEG/V+T carries the "/V" suffix, indicating AEC-Q100 qualification for Grade 0 operation from -40°C to +125°C. It meets stress testing requirements for automotive underhood environments, including HTOL, temperature cycling, and ESD (HBM ≥2kV), making it suitable for ADAS, body control, and infotainment systems.