View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsSTM705M6F
STM705M6F Image
Image may be representation.
See specifications for product details.
EXPRESS OPTION
Payment method

STM705M6F - STMicroelectronics

Manufacturer Part Number
STM705M6F
Manufacturer
STMicroelectronics
Allelco Part Number
32D-STM705M6F
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
31,643 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL 8SO
Package
8-SOIC
Data sheet
STM705M6F.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 31643
  • Unit Price: $1.872
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $1.872 $1.87
10+ $1.628 $16.28
30+ $1.476 $44.28
100+ $1.262 $126.20
500+ $1.191 $595.50
1000+ $1.159 $1,159.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

STM705M6F Tech Specifications
STMicroelectronics - STM705M6F technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM705M6F

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Threshold 4.63V
Type Simple Reset/Power-On Reset
Supplier Device Package 8-SOIC
Series -
Reset Timeout 140ms Minimum
Reset Active Low
Product Attribute Attribute Value
Package / Case 8-SOIC (0.154", 3.90mm Width)
Package Tape & Reel (TR)
Output Push-Pull, Totem Pole
Operating Temperature -40°C ~ 85°C (TA)
Number of Voltages Monitored 1
Mounting Type Surface Mount
Base Product Number STM705

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

STM705M6F Image
STM705M6F (1)

Manufacturer Part Number

STM705M6F

Manufacturer

STMicroelectronics

Introduction

Integrated Circuit (IC)

Power Management IC (PMIC)

Supervisor IC

Product Features and Performance

Monitors single voltage supply

Generates active low reset signal on power-on or brown-out

Provides minimum 140ms reset timeout

Reset threshold voltage of 4.63V

Product Advantages

Robust monitoring and reset functionality

Wide operating temperature range of -40°C to 85°C

Compact 8-SOIC package for space-constrained designs

RoHS3 compliant for environmental compliance

Key Technical Parameters

Voltage Monitoring: Single voltage

Reset Threshold Voltage: 4.63V

Reset Timeout: Minimum 140ms

Output Type: Push-Pull, Totem Pole

Reset Logic: Active Low

Operating Temperature Range: -40°C to 85°C

Quality and Safety Features

RoHS3 compliant

Reliable monitoring and reset functionality

Robust operating temperature range

Compatibility

Surface mount package (8-SOIC)

Suitable for a variety of electronic applications

Application Areas

Microcontroller-based systems

Power supply monitoring

System reset and power-on reset

Product Lifecycle

Active and available product

Replacements and upgrades may be available

Key Reasons to Choose This Product

Reliable power-on and brown-out reset functionality

Wide operating temperature range for diverse applications

Compact package size for space-constrained designs

RoHS3 compliance for environmental responsibility

Robust monitoring and reset features for system reliability

Frequently Asked Questions(FAQ)

What is the primary function of the STM705M6F supervisor IC in a power supply design, and how does its 4.63V threshold voltage impact system-level reliability?
The STM705M6F serves as a power-on reset (POR) supervisor that monitors a single supply rail and asserts a reset signal when the monitored voltage drops below 4.63V. This ensures microcontrollers or digital systems do not execute corrupted instructions during under-voltage conditions. With a typical operating range spanning from just above 4.63V down to near 0V, this threshold provides a narrow window of safe operation for 5V logic systems. In real-world applications, such as battery-powered devices, this precise monitoring prevents erratic behavior during brownout events. The 140ms minimum reset timeout guarantees sufficient stabilization time before releasing the reset line, which is critical for systems with slow-start regulators or large decoupling capacitors.
How should the STM705M6F be configured when used alongside a 3.3V microcontroller to avoid false resets, and what role does hysteresis play in this scenario?
When interfacing the STM705M6F—which has a fixed 4.63V threshold—with a 3.3V microcontroller, direct connection of the microcontroller’s VDD to the monitor input would cause unintended resets as soon as the supply falls below 4.63V. To prevent this, an external resistor divider must scale the 3.3V supply down to approximately 4.63V at the VCC pin. For example, using resistors R1 = 10kΩ and R2 = 19kΩ yields a scaled voltage of 3.3V × (19 / (10 + 19)) ≈ 2.17V, well within the valid input range but still above the reset threshold. Hysteresis is not internal to the STM705M6F; thus, designers must rely on external circuitry like Schmitt triggers or comparator-based feedback networks if noise immunity near the threshold is required. Without proper scaling, even minor voltage fluctuations could trigger spurious resets, compromising system stability.
What are the key differences between the STM705M6F and alternative models like the MAX705CSA+ or ADM705ARZ in terms of threshold accuracy and output configuration?
While the STM705M6F features a fixed 4.63V threshold and provides a push-pull (totem pole) active-low reset output capable of sourcing and sinking current, alternatives such as the MAX705CSA+ offer similar functionality but may include adjustable thresholds via external resistors. The ADM705ARZ, however, typically operates at lower thresholds (e.g., 2.93V) and often uses open-drain outputs instead of push-pull. Threshold accuracy varies by ±2% across industrial temperature ranges, so substituting one for another requires verifying both voltage compatibility and output drive requirements. Additionally, the STM705M6F’s push-pull output simplifies interfacing with CMOS logic without pull-up resistors, offering better noise margin in noisy environments compared to open-drain variants.
Can the STM705M6F reliably operate in automotive environments, and how do its temperature specifications compare to industry standards for harsh-condition applications?
The STM705M6F is rated for -40°C to +85°C commercial operation, which meets basic industrial requirements but falls short of full automotive AEC-Q100 qualification. While it can function in many non-critical automotive subsystems, its extended temperature performance lacks validation under thermal cycling or vibration stress typical in engine compartments. In contrast, automotive-grade alternatives like the TPS3808 or MAX6332 offer wider operating ranges (-40°C to +125°C) and tighter tolerances. For designs requiring compliance with ISO 16750-3 or similar standards, the STM705M6F may suffice only if environmental controls limit exposure to extreme temperatures. Otherwise, substitution with a qualified part is advisable to mitigate field failure risks.
How does the STM705M6F’s 8-SOIC package affect thermal dissipation and layout considerations in compact PCB designs?
The 8-SOIC (3.90mm width) package presents moderate thermal challenges due to limited exposed copper area and absence of a thermal pad. Maximum power dissipation is constrained by junction-to-ambient thermal resistance (θJA), typically around 120°C/W in free-air conditions. At ambient temperatures exceeding 60°C, continuous operation near full load could elevate die temperature beyond safe limits. Layout best practices include minimizing trace lengths to reduce parasitic inductance, placing decoupling capacitors close to VCC and GND pins, and avoiding routing high-current paths beneath the IC. In dense designs, adding a small thermal relief or connecting ground plane vias under the body can marginally improve heat spreading, though active cooling remains unnecessary for typical supervisory tasks.
Is the STM705M6F suitable for use in battery-backed systems where backup capacitance might cause delayed power restoration?
Yes, the STM705M6F supports applications involving hold-up capacitors, provided the reset timeout (minimum 140ms) exceeds the expected discharge time of the backup source. During brief power interruptions, the capacitor maintains the supply rail above 4.63V momentarily, allowing the supervisor to keep the system in reset until voltage stabilizes. However, if the backup decays slowly—such as in systems with high quiescent current loads—the 140ms window may expire before full recovery, leading to premature reset assertion. Designers should simulate worst-case discharge curves using the IC’s typical quiescent current (e.g., 1.5µA) and verify timing margins against actual load profiles to ensure reliable restart sequencing.
What precautions should be taken when substituting the STM705M6F with parts like the DS1705ESA+ or MAX705ESA+ in legacy designs?
Substitution requires careful evaluation of electrical compatibility beyond pin count. The DS1705ESA+ shares similar functionality but may have different threshold voltages (e.g., 4.6V vs. 4.63V) and reset timeout characteristics. Similarly, the MAX705ESA+ offers comparable performance but may differ in propagation delay or output rise/fall times, affecting synchronous system initialization. Always cross-reference absolute maximum ratings, input leakage currents, and output sink/source capabilities. Additionally, check packaging differences—some substitutes use SOIC-8 with varying lead spacings—which may necessitate footprint modifications. Functional testing under real operating conditions is essential, especially in safety-critical applications where reset timing directly impacts boot integrity.
How does the STM705M6F handle transient voltage spikes on the monitored rail, and what external components enhance its robustness?
The STM705M6F does not incorporate built-in protection against transients; thus, external filtering is necessary. A simple RC network (e.g., 100Ω series resistor with 100nF capacitor to ground) placed at the VCC pin can suppress fast glitches while preserving DC accuracy. Alternatively, TVS diodes rated slightly above 4.63V (e.g., 5.5V clamping) protect against surge events without interfering with normal operation. Care must be exercised to avoid excessive capacitance, which could delay response during legitimate under-voltage conditions. Decoupling capacitors (typically 100nF ceramic) near the IC further stabilize the supply, reducing susceptibility to local noise coupling into the reference circuit. These measures collectively improve resilience in electrically noisy environments like motor drives or switching power supplies.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM705M6F

Product Attribute STM705M6E STM706PAM6F STM704TM6F STM705DS6F
Part Number STM705M6E STM706PAM6F STM704TM6F STM705DS6F
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Reset Timeout - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Output - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Reset - - - -
Number of Voltages Monitored - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Threshold - - - -
Type - - - -

STM705M6F Datasheet PDF

Download STM705M6F pdf datasheets and STMicroelectronics documentation for STM705M6F - STMicroelectronics.

PCN Packaging
Box Label Chg 28/Jul/2016.pdf Moisture Barrier Bag 09/May/2016.pdf
PCN Assembly/Origin
Mult Devices Lead Frame 12/Jan/2018.pdf
PCN Design/Specification
New Material Set for SO8 & SO14 Pkg 18/Nov/2015.pdf
HTML Datasheet
STM705-708,813L.pdf

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.

Write a Review

Your Email address will not be published.

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.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

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.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
STM705M6F Image

STM705M6F

STMicroelectronics
32D-STM705M6F

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

0 RFQ
Shopping cart (0 Items)
It is empty.
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB