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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsMAX6345MUT+T
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MAX6345MUT+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX6345MUT+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-MAX6345MUT+T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,790 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL SOT23-6
Package
SOT-6
Data sheet
MAX6345MUT+T.pdf

Datasheets

MAX6342-45.pdf

Design Resources

2.73KHz.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf

Part Numbering Guide

Part Numbering System.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 4790

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Specifications

MAX6345MUT+T Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX6345MUT+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX6345MUT+T

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Voltage - Threshold 4.38V
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 Tape & Reel (TR)
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

MAX6345MUT+T Image
MAX6345MUT+T (1)

Manufacturer Part Number

MAX6345MUT+T

Manufacturer

Analog Devices

Introduction

The MAX6345MUT+T is a simple reset/power-on reset (POR) supervisor from Analog Devices. It is designed to monitor a single supply voltage and provide an active-low reset output when the voltage drops below a preset threshold.

Product Features and Performance

Monitors a single supply voltage

Voltage threshold: 4.38V

Push-pull, totem-pole reset output

Active-low reset

Minimum reset timeout: 100ms

Operating temperature range: -40°C to +125°C

Product Advantages

Compact SOT-23-6 package

Simple, cost-effective solution for power supply monitoring

Reliable voltage supervision to ensure system integrity

Key Reasons to Choose This Product

Robust voltage monitoring to prevent system malfunctions

Wide temperature range for use in diverse applications

Easy integration with minimal external components

Quality and Safety Features

Rigorous quality control and testing

Compliant with industry safety standards

Compatibility

Suitable for a variety of electronic systems and devices

Application Areas

Suitable for use in consumer electronics, industrial equipment, and other applications where reliable power supply monitoring is required

Product Lifecycle

This product is Obsolete and has been discontinued by the manufacturer.

Frequently Asked Questions(FAQ)

How does the MAX6345MUT+T supervisor IC compare to other voltage monitoring solutions in terms of reset timeout and output configuration for a 5V system design?
The MAX6345MUT+T features a fixed 100ms minimum reset timeout, which provides adequate delay for microcontroller stabilization after power-up or brownout conditions. Its push-pull totem pole output enables both active low signaling and strong drive capability, allowing direct interface with digital inputs without external pull-up resistors. When compared to open-drain alternatives like the MCP120T, this configuration offers better noise immunity and faster rise times in noisy environments, making it suitable for systems requiring precise timing control during initialization sequences.
What are the key considerations when selecting between the MAX6345MUT+T and similar single-channel supervisor ICs like the MAX809 for battery-powered applications?
For battery-powered designs, the MAX6345MUT+T's 4.38V threshold voltage and push-pull output provide advantages over comparator-based solutions. With a typical quiescent current of just 1.5µA, it consumes minimal standby power compared to many competing devices. However, unlike the MAX809 family which often requires an external capacitor for adjustable thresholds, the MAX6345MUT+T offers fixed precision thresholds with ±0.5% accuracy, reducing component count while ensuring reliable detection of critical supply drops without calibration concerns.
Can the MAX6345MUT+T be used effectively in automotive applications operating at -40°C to +125°C?
Yes, the MAX6345MUT+T is specified for operation across -40°C to +125°C, meeting standard automotive temperature requirements. The SOT-23-6 package provides adequate thermal performance for most supervisory functions without requiring heatsinking. However, designers should verify that the PCB layout maintains proper trace impedance and avoids thermal hotspots, especially in high-humidity environments where moisture sensitivity level 1 indicates unlimited floor life but requires careful handling during assembly.
How does the MAX6345MUT+T’s threshold accuracy compare to newer-generation supervisor ICs with similar specifications?
With a ±0.5% threshold accuracy, the MAX6345MUT+T offers precision comparable to modern alternatives such as the MAX6325 series. This level of accuracy ensures reliable detection of voltage drops without false resets due to minor supply variations. In comparison to older generations like the MAX809 (which typically has ±2% accuracy), the improved tolerance reduces design margin requirements and enhances system reliability in applications where tight voltage regulation is critical.
What impact does the 100ms minimum reset timeout have on system initialization in embedded designs using the MAX6345MUT+T?
The 100ms minimum reset timeout allows sufficient time for microcontrollers and peripherals to complete their internal initialization routines before normal operation begins. This duration is generally adequate for mid-range MCUs executing boot sequences, but may require adjustment if using processors with longer startup times. Designers must ensure that their application firmware accounts for this delay, particularly when interfacing with external memory or communication interfaces that might otherwise enter undefined states during extended reset periods.
Is the MAX6345MUT+T suitable for use in space-constrained PCB layouts compared to larger packaged supervisor ICs?
The SOT-23-6 package measures just 2.9mm x 1.6mm, making it one of the smallest available supervisor ICs. This compact form factor significantly reduces board real estate requirements versus SOIC or DIP packages, enabling higher component density. Despite its small size, the MAX6345MUT+T maintains full functionality including push-pull outputs and precise threshold monitoring, making it ideal for portable electronics and compact industrial controllers where space limitations are critical.
How does the active-low reset output of the MAX6345MUT+T interact with different microcontroller families during power-up sequencing?
The active-low reset output drives low when the monitored voltage falls below 4.38V, signaling the microcontroller to initiate a reset sequence. Most modern MCUs expect active-low resets, so direct compatibility exists with families like ARM Cortex-M, AVR, and PIC. However, some newer processors may require active-high resets—designers should consult their MCU datasheet for reset polarity requirements. The push-pull configuration ensures clean signal edges even with long trace lengths common in complex PCBs.
What precautions should be taken when implementing the MAX6345MUT+T in designs with multiple voltage rails requiring independent monitoring?
Since the MAX6345MUT+T monitors only a single voltage rail, additional supervisor ICs or multiplexed monitoring solutions are needed for multi-rail systems. Careful attention must be paid to power sequencing between rails to prevent unintended resets. If sharing a common ground plane, ensure that noise coupling from switching regulators doesn't cause false triggering. Using separate MAX6345MUT+T units for each critical rail provides isolation and simplifies debugging compared to shared-reset architectures.
How does the MAX6345MUT+T handle transient voltage spikes above 4.38V during system operation?
The MAX6345MUT+T responds to sustained undervoltage conditions, not brief transients. Transient spikes above the threshold won't trigger a reset, but rapid dips below 4.38V will activate the reset output. For systems prone to voltage transients, consider adding input filtering capacitors near the VCC pin (typically 1–10μF ceramic) to suppress high-frequency noise while preserving detection sensitivity to genuine supply drops.
What advantages does the RoHS3 compliance of the MAX6345MUT+T offer in global manufacturing environments?
RoHS3 compliance means the device meets all current European Union restrictions on hazardous substances including lead, mercury, cadmium, and specific phthalates. This certification facilitates worldwide distribution without modification, simplifying supply chain logistics. Combined with MSL 1 classification, it supports just-in-time manufacturing processes and reduces environmental liability risks across international markets including China, Europe, and North America.
How does the MAX6345MUT+T compare to integrated power management ICs that include built-in supervisor functionality?
While dedicated supervisor ICs like the MAX6345MUT+T offer superior threshold accuracy and response characteristics, many modern PMICs integrate basic reset functions. The MAX6345MUT+T remains preferable when precise voltage monitoring is required outside the PMIC’s range, or when independent supervision of auxiliary rails improves fault coverage. Its discrete implementation also allows flexible placement near sensitive loads rather than being tied to the main PMIC location.
What design implications arise from the MAX6345MUT+T’s surface-mount packaging in high-reliability applications?
The SOT-23-6 package requires careful soldering profile control to avoid thermal stress during reflow. Proper land pattern design with adequate copper pour and solder mask relief prevents tombstoning and ensures reliable connections. In vibration-prone environments, mechanical strain relief may be necessary. Despite these considerations, the package’s small size and excellent electrical performance make it suitable for most commercial and industrial applications where automated assembly processes follow IPC standards.
How does the MAX6345MUT+T support fail-safe operation in safety-critical systems compared to software-based watchdog timers?
As a hardware-based solution, the MAX6345MUT+T operates independently of processor execution, providing immediate response to supply anomalies that could corrupt program flow. Unlike software watchdogs, it detects brownouts and voltage sags before they cause unpredictable behavior. When combined with a watchdog timer, the MAX6345MUT+T adds another layer of protection against catastrophic failures, ensuring clean system recovery during power instability events.
What role does the base product number MAX6345 play in selecting compatible replacement parts or alternative suppliers?
The MAX6345 base number indicates compatibility with other variants differing only in threshold voltage (e.g., MAX6345xT+T for different VTH options). This standardization aids in sourcing replacements while maintaining consistent electrical characteristics. Suppliers typically offer equivalent parts under similar naming conventions, allowing designers to substitute based on availability without redesign effort, provided the new part matches the required threshold and package type.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX6345MUT+T

Product Attribute MAX6345MUT-T MAX6345RUT+T MAX6345LUT+T MAX6345SUT+T
Part Number MAX6345MUT-T MAX6345RUT+T MAX6345LUT+T MAX6345SUT+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)
Mounting Type - Surface Mount Through Hole Surface Mount
Output - - - -
Type - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Reset Timeout - - - -
Reset - - - -
Voltage - Threshold - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Number of Voltages Monitored - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -

MAX6345MUT+T Datasheet PDF

Download MAX6345MUT+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX6345MUT+T - Analog Devices Inc./Maxim Integrated.

Datasheets
MAX6342-45.pdf
Design Resources
2.73KHz.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf
Part Numbering Guide
Part Numbering System.pdf

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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

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(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.
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Electrostatic Discharge Protection and Handling

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MAX6345MUT+T Image

MAX6345MUT+T

Analog Devices Inc./Maxim Integrated
32D-MAX6345MUT+T

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