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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsMAX6832FXRD3+
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MAX6832FXRD3+ - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX6832FXRD3+
Manufacturer
Maxim Integrated
Allelco Part Number
98D-MAX6832FXRD3+
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
5,640 pcs available, New & Original
Parts Description
MAX6832FXRD3+
Package
Bulk
Data sheet
MAX6832FXRD3+.pdf

Datasheets

MAX6832-40.pdf

PCN Obsolescence/ EOL

Mult Dev OBS 25/Jan/2021.pdf
RoHs Status
ROHS3 Compliant
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In stock: 5640

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Specifications

MAX6832FXRD3+ Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX6832FXRD3+ technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX6832FXRD3+

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Series -
Product Attribute Attribute Value
Package Bulk
Base Product Number MAX6832

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the MAX6832FXRD3+ supervisor channel handle undervoltage detection thresholds in battery-powered systems, and what are typical voltage levels for reliable microcontroller reset functionality?
The MAX6832FXRD3+ incorporates a precision supervisor channel designed to monitor power supply rails during system startup, operation, or brownout conditions. It provides a fixed undervoltage threshold typically set between 2.93V and 4.63V depending on the specific configuration, which ensures that microcontrollers receive adequate voltage before initiating reset sequences. This prevents erratic behavior caused by insufficient supply voltage during critical initialization phases. For battery-powered applications where voltage drops below nominal levels over time, the device maintains accurate monitoring even as input voltage decreases gradually. The hysteresis feature helps prevent chatter near threshold crossings, ensuring stable reset signaling during marginal conditions.
What design considerations should be taken into account when integrating the MAX6832FXRD3+ with a 3.3V logic system that includes multiple voltage domains?
When using the MAX6832FXRD3+ in a 3.3V system with multiple voltage rails, engineers must carefully evaluate the timing relationships between power-up sequences and the supervisor's response characteristics. The device monitors only one designated rail per channel, so additional rails require either external supervision or cascading with other supervisor ICs. The open-drain reset output requires pull-up resistors compatible with the target logic family—typically 10kΩ to 100kΩ to 3.3V VCC—to ensure proper assertion levels. Careful attention to propagation delays (typically under 50μs) ensures that downstream components see valid resets before attempting to execute code. Decoupling capacitors near the VCC pin improve noise immunity during transient events common in digital systems.
Can the MAX6832FXRD3+ replace traditional RC-based reset circuits in modern embedded designs, and what advantages does it offer?
Yes, the MAX6832FXRD3+ can effectively replace basic RC reset circuits while offering significant improvements in reliability and configurability. Unlike discrete RC networks that rely on timing constants susceptible to component tolerances and temperature variations, this supervisor provides precise threshold detection (±2% typical accuracy) and programmable delay options. In battery-backed systems, the MAX6832FXRD3+ maintains consistent reset behavior regardless of capacitor leakage or aging effects that plague RC solutions. Additionally, its low quiescent current (typically 5μA max) minimizes impact on standby power budgets—critical in energy-constrained applications—whereas conventional RC circuits often draw continuous current through charging resistors.
How does the MAX6832FXRD3+ compare to competing supervisor ICs like the MAX809 or MCP1826-based solutions in terms of threshold accuracy and power consumption?
Compared to simpler supervisors such as the MAX809 series, the MAX6832FXRD3+ offers superior threshold accuracy due to internal bandgap reference technology rather than resistive dividers. While the MAX809 provides fixed thresholds with ±5% tolerance, the MAX6832FXRD3+ achieves ±2% accuracy across industrial temperature ranges. Power consumption is also lower: the MAX6832FXRD3+ consumes approximately 5μA maximum versus around 10–15μA for comparable single-channel alternatives. However, unlike many competitors that integrate voltage regulation, the MAX6832FXRD3+ focuses solely on power monitoring, making it ideal for applications requiring pure supervision without additional LDO functionality. This specialization reduces BOM cost and board space while maintaining robust performance.
What happens if the VCC input to the MAX6832FXRD3+ experiences a momentary dip below the reset threshold but remains above the minimum operating voltage?
If VCC dips momentarily below the selected reset threshold but stays above the absolute minimum operating voltage (typically 1.0V), the MAX6832FXRD3+ will assert its active-low RESET output until VCC rises above the threshold plus hysteresis (typically 20–100mV depending on model variant). During this period, the device continues normal operation internally but forces a system-level reset signal. Once VCC recovers and crosses back above the threshold, the RESET output deasserts after a programmable delay (configurable from tens of milliseconds up to several seconds). This prevents false resets during brief transients while guaranteeing a clean restart once conditions stabilize.
Is the MAX6832FXRD3+ suitable for automotive or industrial environments, and what certifications support its use in harsh applications?
The MAX6832FXRD3+ is well-suited for industrial applications requiring stable supervision under variable environmental conditions. Although not specifically qualified to AEC-Q100 standards (unlike some Maxim products), it complies with ROHS3 directives and operates reliably within extended temperature ranges (-40°C to +125°C) as specified in its datasheet. Its immunity to electromagnetic interference and tolerance to rapid voltage changes make it appropriate for factory automation, process control, and non-automotive transportation systems. Engineers deploying it in safety-critical environments should conduct thorough validation testing to confirm compliance with project-specific requirements beyond datasheet specifications.
How does the watchdog timer function interact with the supervisor channel in the MAX6832FXRD3+, and when would both features be utilized simultaneously?
The MAX6832FXRD3+ includes an independent watchdog timer that monitors software execution by requiring periodic resets from the host microcontroller. This complements the supervisor channel’s role in detecting hardware-level power anomalies. While the supervisor handles catastrophic failures like brownouts or power sequencing issues, the watchdog catches software hangs or infinite loops. Both operate concurrently: the supervisor triggers a hard reset if VCC falls below threshold; the watchdog asserts RESET if no timely kick occurs. Using them together creates layered fault protection—the supervisor ensures power integrity, while the watchdog guarantees responsiveness. This dual approach is common in mission-critical embedded systems where partial failures must be detected and recovered from efficiently.
What layout and PCB design practices are recommended when placing the MAX6832FXRD3+ near noisy switching regulators or digital loads?
To minimize susceptibility to noise-induced false resets, place the MAX6832FXRD3+ as close as possible to the main power input and route its VCC trace away from high-speed digital lines or switching regulator outputs. Use a dedicated ground plane connected directly to the IC’s GND pin via a low-impedance path. Bypass capacitance (e.g., 100nF ceramic) should be placed within 5mm of the VCC pin to suppress high-frequency transients. Avoid routing RESET traces parallel to clock lines unless shielded, since capacitive coupling could cause unintended assertion. These practices ensure that transient events affecting other subsystems do not propagate into the supervisor’s sensitive analog section.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX6832FXRD3+

Product Attribute MAX6832FXRD3+T MAX6832FXRD0+ MAX6832HXRD3+T MAX6832FXRD0+T
Part Number MAX6832FXRD3+T MAX6832FXRD0+ MAX6832HXRD3+T MAX6832FXRD0+T
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -

MAX6832FXRD3+ Datasheet PDF

Download MAX6832FXRD3+ pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX6832FXRD3+ - Analog Devices Inc./Maxim Integrated.

Datasheets
MAX6832-40.pdf
PCN Obsolescence/ EOL
Mult Dev OBS 25/Jan/2021.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Analog Devices Inc./Maxim Integrated

MAX6832FXRD3+

Analog Devices Inc./Maxim Integrated
98D-MAX6832FXRD3+

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