Analog Devices Inc./Maxim Integrated MAX16135HRB/V+T

Overview

MAX16135HRB/V+T from Analog Devices is a quad-voltage microprocessor supervisor IC designed for automotive ADAS systems, monitoring four independent supply rails (IN1–IN4) for ±1% accurate undervoltage and overvoltage window faults. It features dual active-low open-drain reset outputs (RESET1, RESET2), 23 factory-programmable reset timeout periods up to 1200ms, and operates across -40°C to +125°C with AEC-Q100 qualification.

For engineers reviewing the MAX16135HRB/V+T datasheet, MAX16135HRB/V+T pinout, MAX16135HRB/V+T application, or MAX16135HRB/V+T equivalent, this device delivers precision multi-rail supervision in compact SOT23-8 packaging - critical for functional safety compliance, multivoltage ASIC power sequencing, and high-reliability server/storage power management where tight threshold accuracy and transient immunity are mandatory.

Technical Context

The MAX16135HRB/V+T implements a quad-input window comparator architecture with independent input tolerance programming per channel (±4% to ±11%), factory-trimmed hysteresis (0.25% or 0.50%), and ±1% threshold accuracy over temperature. Its dual-reset logic asserts RESET1 when IN1 or IN2 falls outside its programmed window, and RESET2 when IN3 or IN4 violates its window - enabling grouped fault detection without external logic.

All four inputs accept nominal voltages from 1.0V to 5.0V (per Selector Guide suffix 'HRB' = IN1=3.3V, IN2=1.8V, IN3=1.2V, IN4=1.0V), and share a single factory-set reset timeout period (suffix 'T' = 560ms min). The device guarantees correct reset output state down to VDD = 1.07V and draws only 12.5μA typical supply current.

Key Specifications

Pinout & Package

MAX16135HRB/V+T is housed in an 8-pin SOT23 package (Package Code K8+5A, Outline 21-0078), optimized for space-constrained automotive PCBs. Pin 4 is GND; Pin 1 is VDD; Pins 2, 3, 5, 6, 7, and 8 are signal terminals configured per MAX16135 functional assignment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16135HRB+T, the /V+T variant adds AEC-Q100 qualification essential for automotive OEM programs; compared with TPS3808G33DBVR, it provides quad-window supervision with grouped reset logic and full automotive temperature support - enabling consolidated, safety-compliant power monitoring in ADAS ECUs.

Availability

MAX16135HRB/V+T is available at Aetrix Electronics and suitable for ADAS power sequencing, multivoltage ASIC monitoring, and automotive server storage requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.

Supply support for MAX16135HRB/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 multi-rail voltage supervision for automotive ADAS and safety-critical systems, emphasizing ±1% threshold accuracy, AEC-Q100 qualification, and compact SOT23 packaging for space-constrained ECU designs.

FAQ

What is the nominal input voltage configuration for MAX16135HRB/V+T?

The 'HRB' suffix in MAX16135HRB/V+T specifies factory-programmed nominal input voltages of 3.3V (IN1), 1.8V (IN2), 1.2V (IN3), and 1.0V (IN4), with ±4% tolerance and 0.25% hysteresis per input - matching common automotive SoC rail requirements and documented in the Selector Guide.

Does MAX16135HRB/V+T support overvoltage detection on all four inputs?

Yes, MAX16135HRB/V+T performs true window supervision on all four inputs, detecting both undervoltage and overvoltage faults relative to each input's nominal voltage and programmed tolerance - unlike single-threshold supervisors that only monitor for brownout.

What is the reset timeout period for MAX16135HRB/V+T?

The 'T' suffix in MAX16135HRB/V+T indicates a factory-programmed minimum reset timeout period of 560ms, which applies identically to both RESET1 and RESET2 outputs - ensuring sufficient hold time for complex processor initialization sequences.

Is MAX16135HRB/V+T qualified for automotive applications?

Yes, MAX16135HRB/V+T carries the /V suffix confirming AEC-Q100 qualification for Grade 0 (-40°C to +125°C), making it suitable for under-hood automotive applications including ADAS cameras, radar modules, and gateway ECUs requiring functional safety compliance.

How does the dual reset architecture of MAX16135HRB/V+T improve system diagnostics?

MAX16135HRB/V+T groups IN1/IN2 under RESET1 and IN3/IN4 under RESET2, enabling coarse-grained fault isolation - e.g., distinguishing core-domain faults (RESET1 assert) from I/O-domain faults (RESET2 assert) without additional logic or firmware overhead.