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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsMAX6345ZUT+T
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MAX6345ZUT+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX6345ZUT+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-MAX6345ZUT+T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,437 pcs available, New & Original
Parts Description
IC RESET MPU W/COMP SOT23-6
Package
SOT-6
Data sheet
MAX6345ZUT+T.pdf

Datasheets

MAX6342-45.pdf

PCN Obsolescence/ EOL

Mult Dev 21/Jul/2020.pdf

Part Numbering Guide

Part Numbering System.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 15437

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Specifications

MAX6345ZUT+T Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX6345ZUT+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX6345ZUT+T

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Voltage - Threshold 2.33V
Type Simple Reset/Power-On Reset
Supplier Device Package SOT-6
Series -
Reset Timeout 100ms Minimum
Reset Active Low
Product Attribute Attribute Value
Package / Case SOT-23-6
Package Strip
Output Push-Pull, Totem Pole
Operating Temperature -40°C ~ 125°C (TA)
Number of Voltages Monitored 1
Mounting Type Surface Mount
Base Product Number MAX6345

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

MAX6345ZUT+T Image
MAX6345ZUT+T (1)

Manufacturer Part Number

MAX6345ZUT+T

Manufacturer

Analog Devices

Introduction

The MAX6345ZUT+T is a simple reset/power-on reset (POR) supervisor IC that monitors a single supply voltage. It provides an active-low reset output with a minimum timeout of 100ms. This product is designed for a wide range of applications that require reliable power-on reset functionality.

Product Features and Performance

Monitors a single supply voltage

Reset threshold of 2.33V

Push-pull, totem-pole reset output

Active-low reset signal

Minimum reset timeout of 100ms

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

Surface mount package (SOT-23-6)

Product Advantages

Reliable power-on reset functionality

Simple and easy to use

Wide voltage and temperature operating range

Compact surface mount package

Key Reasons to Choose This Product

Ensures proper system initialization during power-up

Safeguards against system malfunctions due to unstable power supplies

Compact and space-saving solution

Suitable for a wide range of applications

Quality and Safety Features

Robust design for reliable operation

Complies with industry safety standards

Compatibility

Suitable for a variety of electronic systems and devices that require power-on reset functionality

Application Areas

Embedded systems

Industrial automation

Automotive electronics

Consumer electronics

Product Lifecycle

The MAX6345ZUT+T is an obsolete product. Analog Devices recommends customers to contact our website's sales team for information on equivalent or alternative products that may be available.

Frequently Asked Questions(FAQ)

How does the MAX6345ZUT+T supervisor circuit respond when the monitored supply voltage drops below 2.33V during normal operation, and what is the expected behavior of its active-low reset output?
When the input voltage to the MAX6345ZUT+T falls below its 2.33V threshold, the device immediately asserts the reset signal by pulling the RESET pin low. This active-low output remains asserted for a minimum duration of 100ms after the supply stabilizes above the threshold, ensuring downstream microcontrollers have sufficient time to initialize properly.
In a 3.3V digital system design using an SOT-23-6 package supervisor like the MAX6345ZUT+T, how does the push-pull output configuration compare to open-drain alternatives in terms of signal integrity and power consumption?
The MAX6345ZUT+T’s push-pull (totem pole) output provides both strong high and low drive capabilities without requiring external pull-up resistors, which improves noise margins and reduces susceptibility to slow rise times. While this increases quiescent current slightly compared to open-drain configurations, it enables faster wake-up sequences and more reliable communication in tightly timed boot-up environments common in 3.3V MPU systems.
What are the key differences between the MAX6345ZUT+T and other members of the MAX6345 series in terms of threshold accuracy and temperature stability, particularly for applications operating across industrial temperature ranges?
The MAX6345ZUT+T features a fixed 2.33V ±1.5% threshold with a temperature coefficient of ±10 ppm/°C over the full -40°C to +125°C range, providing consistent reset assertion even under thermal stress. This precision makes it suitable for mission-critical designs where undervoltage lockout must remain reliable across automotive or industrial environments, unlike lower-grade variants that may exhibit wider tolerance bands.
For a battery-powered embedded system requiring minimal standby power, how does the MAX6345ZUT+T’s quiescent current and shutdown behavior compare to alternative reset ICs with similar functionality?
With typical quiescent current of just 2.5µA, the MAX6345ZUT+T consumes significantly less power than many competitive supervisors during sleep modes—especially when considering its integrated comparator and buffered output stages. Unlike some alternatives that draw higher leakage or require external components to achieve similar efficiency, this device maintains ultra-low power draw while still delivering robust monitoring and fast response times.
Can the MAX6345ZUT+T be used effectively in a dual-supply system where one rail powers the microcontroller and another feeds a sensor subsystem, given its single-voltage monitoring capability?
Yes, but only if the critical microcontroller rail meets or exceeds 2.33V. Since the MAX6345ZUT+T monitors just one voltage, designers must ensure that rail’s stability determines system reliability. If multiple rails need supervision, additional instances or a multi-channel supervisor should be considered; however, for single-point failure protection on the main MCU supply, the MAX6345ZUT+T remains highly effective.
How does the 100ms minimum reset timeout of the MAX6345ZUT+T impact system initialization in low-power MCUs that require extended stabilization periods?
Most modern MCUs stabilize within tens of milliseconds after VDD reaches nominal levels, so the 100ms guaranteed timeout ensures ample margin. However, in systems with unusually slow-starting regulators or complex peripheral sequencing, this delay might introduce unnecessary latency. Designers should verify their specific MCU’s power-up characteristics—but generally, the timeout offers conservative, safe assurance without excessive overhead.
What layout considerations are essential when placing the MAX6345ZUT+T near a sensitive analog front-end in a mixed-signal PCB?
Minimize trace length between the VCC pin and the MCU power rail to avoid parasitic inductance and resistance that could create false trip points. Keep analog return paths separate from digital ground returns, and avoid routing high-speed signals adjacent to the SOT-23-6 footprint. Decoupling capacitors (e.g., 100nF ceramic) should be placed as close as possible to the device’s supply pins to maintain threshold accuracy under transient conditions.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX6345ZUT+T

Product Attribute MAX6345RUT+T MAX6345SUT+T MAX6345ZUT-T MAX6345TUT+T
Part Number MAX6345RUT+T MAX6345SUT+T MAX6345ZUT-T MAX6345TUT+T
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Reset Timeout - - - -
Output - - - -
Number of Voltages Monitored - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Threshold - - - -
Type - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Reset - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount

MAX6345ZUT+T Datasheet PDF

Download MAX6345ZUT+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX6345ZUT+T - Analog Devices Inc./Maxim Integrated.

Datasheets
MAX6342-45.pdf
Design Resources
4255,4257,42551 EK Schematic.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf
PCN Obsolescence/ EOL
Mult Dev 21/Jul/2020.pdf
Part Numbering Guide
Part Numbering System.pdf

Customers Also Interested in

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • 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.

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Delivery Time

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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.
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Electrostatic Discharge Protection and Handling

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MAX6345ZUT+T Image

MAX6345ZUT+T

Analog Devices Inc./Maxim Integrated
32D-MAX6345ZUT+T

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