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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsMAX6747KA26+T
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MAX6747KA26+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX6747KA26+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-MAX6747KA26+T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,030 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL SOT23-8
Package
SOT-23-8
Data sheet
MAX6747KA26+T.pdf
RoHs Status
ROHS3 Compliant
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In stock: 16030

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Specifications

MAX6747KA26+T Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX6747KA26+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX6747KA26+T

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Voltage - Threshold 2.625V
Type Simple Reset/Power-On Reset
Supplier Device Package SOT-23-8
Series Automotive, AEC-Q100
Reset Timeout 5.692ms Minimum
Reset Active Low
Product Attribute Attribute Value
Package / Case SOT-23-8
Package Tape & Reel (TR)
Output Open Drain or Open Collector
Operating Temperature -40°C ~ 125°C (TA)
Number of Voltages Monitored 1
Mounting Type Surface Mount
Base Product Number MAX6747

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

MAX6747KA26+T Image
MAX6747KA26+T (1)

Manufacturer Part Number

MAX6747KA26+T

Manufacturer

Analog Devices

Introduction

The MAX6747KA26+T is a simple reset/power-on reset (POR) supervisor from Analog Devices. It monitors a single supply voltage and provides an active-low reset signal when the monitored voltage falls below the preset threshold. This device is designed for a wide range of applications, including system resets, microcontroller supervision, and power supply monitoring.

Product Features and Performance

Monitors a single supply voltage

625V voltage threshold

Open-drain/open-collector reset output

692ms minimum reset timeout

Wide operating temperature range of -40°C to 125°C

Automotive-grade qualification (AEC-Q100)

Small SOT-23-8 package

Product Advantages

Simple and reliable reset/power-on reset functionality

Suitable for a wide range of applications

Automotive-grade qualification for use in harsh environments

Compact surface-mount package for space-constrained designs

Key Reasons to Choose This Product

Robust and dependable voltage monitoring and reset functionality

Automotive-grade reliability and performance

Small footprint and easy integration into PCB designs

Wide operating temperature range for versatile applications

Quality and Safety Features

Designed and manufactured to Analog Devices' high-quality standards

Automotive-grade qualification (AEC-Q100) for use in safety-critical applications

Robust design and protection features for reliable operation

Compatibility

The MAX6747KA26+T is compatible with a wide range of systems and applications that require voltage monitoring and reset functionality.

Application Areas

Microcontroller supervision

Power supply monitoring

System reset control

Automotive and industrial applications

Product Lifecycle

The MAX6747KA26+T is an active product, and Analog Devices continues to support this part. There are no direct equivalent or alternative models available from Analog Devices at this time. If you have any further questions or need more information, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

How does the MAX6747KA26+T supervisor IC handle undervoltage conditions in automotive applications, and what is its typical response time?
The MAX6747KA26+T monitors input voltage levels with a precise 2.625V threshold and generates an active-low reset signal when the supply drops below this level. In automotive environments where voltage transients are common, this device provides reliable power monitoring with a minimum reset timeout of 5.692ms, ensuring downstream systems receive adequate hold-up time during brownout events. The open-drain output allows flexible interfacing with microcontrollers while maintaining compatibility with 3.3V or 5V logic levels commonly used in automotive ECUs.
What are the key differences between using the MAX6747KA26+T versus a discrete voltage reference with comparator for power-on reset functionality?
Compared to a discrete solution requiring external resistors, capacitors, and possibly additional components, the MAX6747KA26+T integrates precision voltage monitoring, hysteresis (implied by its analog architecture), and a built-in reset timeout circuit in a single SOT-23-8 package. This reduces component count, improves layout density, and ensures consistent threshold accuracy (±1% typical) without external calibration. While discrete designs offer tunable thresholds, the integrated approach minimizes timing variations and simplifies compliance testing in automotive systems.
Can the MAX6747KA26+T be used in systems requiring multiple voltage supervision points, and how does it compare to multi-channel alternatives?
The MAX6747KA26+T is designed for single-voltage monitoring only, making it ideal for core supply rails like 3.3V or 5V. For systems needing supervision of multiple rails—such as both core logic and I/O voltages—a dedicated multi-channel supervisor like the MAX6750 or MAX6763 would be more appropriate. These alternatives provide independent threshold tracking and status signals per channel, offering greater design flexibility at the cost of increased pin count and potential crosstalk considerations in high-noise automotive environments.
What are the implications of mounting the MAX6747KA26+T on a PCB in terms of thermal performance and long-term reliability under automotive temperature cycling?
As an AEC-Q100 qualified device operating across -40°C to +125°C, the MAX6747KA26+T meets stringent automotive reliability requirements. Its small SOT-23-8 footprint results in minimal thermal mass, allowing rapid response to temperature extremes without localized hot spots. However, designers must ensure adequate copper pour and thermal relief connections to maintain solder joint integrity during repeated thermal cycles. The MSL 1 rating indicates unlimited floor life, simplifying assembly logistics for high-volume production runs.
How should the open-drain output of the MAX6747KA26+T be properly terminated in a 5V system to avoid undefined states?
Since the MAX6747KA26+T outputs an open-drain signal referenced to ground, a pull-up resistor must connect between the reset line and the target supply rail—typically 3.3V or 5V depending on the microcontroller’s VIL specification. A value between 1kΩ and 10kΩ is generally suitable; lower values improve noise immunity but increase quiescent current. For 5V systems, verify that the microcontroller’s input can tolerate the full 5V when the supervisor pulls the line low, or use a level shifter if necessary.
Is the MAX6747KA26+T suitable for use in electric vehicle battery management systems, and what precautions apply?
While the device itself is qualified for automotive use (AEC-Q100 Grade 2), its 2.625V threshold makes it better suited for supervising secondary rails rather than primary battery lines. In EV BMS applications, it could monitor auxiliary supplies like MCU cores or sensor circuits. However, direct connection to high-impedance battery sense paths may require buffering due to leakage currents. Additionally, EMI filtering near the input pins is recommended given the harsh electromagnetic environment in EVs.
How does the propagation delay of the MAX6747KA26+T affect system startup sequencing compared to software-based watchdog approaches?
The MAX6747KA26+T responds to voltage dips within microseconds, providing hardware-level assurance that the system remains powered within valid operating ranges. This is faster and more deterministic than software-based checks, which depend on CPU execution timing and may be delayed by interrupts or low clock speeds. However, unlike watchdogs that reset unresponsive processors, the MAX6747 only asserts reset during genuine power anomalies, avoiding false resets from transient noise or slow boot sequences.
What are the advantages of using the MAX6747KA26+T over a simple RC-based reset generator in modern digital systems?
Unlike RC networks that suffer from component tolerance stack-up and temperature drift, the MAX6747KA26+T offers factory-trimmed 2.625V threshold accuracy and stable operation across the full automotive temperature range. It also includes internal hysteresis to prevent chatter near the threshold and guarantees a minimum reset pulse width of 5.692ms, ensuring robust initialization even with noisy power rails. This reliability is critical in safety-critical automotive subsystems where unpredictable behavior cannot be tolerated.
Can the MAX6747KA26+T detect overvoltage conditions, or is it limited to undervoltage monitoring only?
The MAX6747KA26+T is specifically designed for undervoltage detection only. It compares the monitored voltage against a fixed 2.625V reference and asserts reset when the input falls below this level. There is no provision for overvoltage protection; such conditions would require a dedicated overvoltage monitor like those found in power path controllers or specialized PMICs with fault detection features. Designers must implement separate protection circuitry if overvoltage resilience is needed.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX6747KA26+T

Product Attribute MAX6747KA23+T MAX6747KA29+T MAX6747KA16+T MAX6747KA31+T
Part Number MAX6747KA23+T MAX6747KA29+T MAX6747KA16+T MAX6747KA31+T
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Output - - - -
Series - - - -
Reset - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Type - - - -
Voltage - Threshold - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Reset Timeout - - - -
Number of Voltages Monitored - - - -

MAX6747KA26+T Datasheet PDF

Download MAX6747KA26+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX6747KA26+T - Analog Devices Inc./Maxim Integrated.

Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • 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.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
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MAX6747KA26+T Image

MAX6747KA26+T

Analog Devices Inc./Maxim Integrated
32D-MAX6747KA26+T

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