STM706DS6F Equivalent & Substitute Parts

Part Overview

The STM706DS6F is an active-low reset supervisor integrated circuit manufactured by STMicroelectronics, designed for power management applications requiring single-channel voltage monitoring and push-pull output control. This PMIC operates across an extended temperature range of -40°C to 85°C and is packaged in an 8-TSSOP surface-mount configuration supplied on tape and reel. The device is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

STM706DS6F

STMicroelectronicsIn Stock: 5326STM706DS6F Datasheet

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DS1706EUA+

Analog Devices Inc./Maxim IntegratedIn Stock: 991DS1706EUA+ Datasheet

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DS1706EUA+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 1994DS1706EUA+T&R Datasheet

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MAX706CUA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1074MAX706CUA+ Datasheet

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MAX706EUA+

Analog Devices Inc./Maxim IntegratedIn Stock: 933MAX706EUA+ Datasheet

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MAX706EUA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1633MAX706EUA+T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STM706DS6F is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

• Single-channel voltage monitoring capability
• Push-pull, totem-pole output configuration
• Active-low reset logic
• Surface-mount technology with 8-pin TSSOP/8-MSOP package footprint (0.118", 3.00mm width)
• Operating temperature range of -40°C to 85°C or broader
• Reset timeout of 140ms minimum or equivalent
• Voltage threshold within the 4.38V to 4.4V range
• ROHS3 compliance and MSL 1 rating
• Active product status

Packaging Flexibility: Substitutes are grouped by packaging format (tube versus tape & reel) to accommodate different procurement and assembly workflows. The 8-uMAX/uSOP package designation used by Analog Devices Inc./Maxim Integrated devices is electrically and mechanically compatible with the 8-TSSOP footprint specified for the STM706DS6F.

Voltage Threshold Tolerance: The STM706DS6F specifies a 4.38V threshold, while substitute parts from Analog Devices Inc./Maxim Integrated specify 4.4V. This 0.02V variance falls within acceptable engineering tolerance for supervisor circuit applications and does not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

MAX706EUA+ and MAX706EUA+T are the preferred substitutes for the STM706DS6F. Both devices maintain identical operating temperature range (-40°C to 85°C), reset timeout specification (140ms minimum), and all critical electrical parameters. The MAX706EUA+T variant is supplied in tape & reel packaging, matching the original part's procurement format. Both are ROHS3 compliant with MSL 1 rating and active product status.

Secondary Substitutes (Temperature-Dependent):

MAX706CUA+ operates within a reduced temperature range (0°C to 70°C) compared to the STM706DS6F (-40°C to 85°C). This substitute is suitable only for applications where the system operates within the 0°C to 70°C envelope. All other electrical and compliance parameters align with the primary part.

Alternative Substitutes (Reset Timeout Variance):

DS1706EUA+ and DS1706EUA+T&R specify a 130ms minimum reset timeout, compared to the 140ms minimum of the STM706DS6F. This 10ms difference may be acceptable in applications where the reset timing margin is not critical. Both variants maintain the full -40°C to 85°C operating range and ROHS3 compliance. DS1706EUA+T&R is supplied in tape & reel format.

Compliance and Certification:

All substitute parts carry ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating, matching the regulatory and environmental requirements of the original part. All devices are in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the MAX706CUA+ be used as a direct replacement for the STM706DS6F in all applications?

A: The MAX706CUA+ is functionally equivalent within its specified operating temperature range of 0°C to 70°C. If your application requires operation below 0°C or above 70°C, the MAX706CUA+ is not suitable. For extended temperature applications, use MAX706EUA+, MAX706EUA+T, DS1706EUA+, or DS1706EUA+T&R instead.

Q: What is the significance of the 10ms difference in reset timeout between the STM706DS6F (140ms) and DS1706EUA+ (130ms)?

A: The reset timeout defines the minimum duration the reset output remains asserted during power-on or voltage recovery events. The 10ms difference represents a 7% variance. Applications with strict reset timing requirements should verify that the 130ms specification meets system-level reset sequencing needs before substituting with DS1706EUA+ or DS1706EUA+T&R.

Q: Are the 8-uMAX/uSOP packages used by Maxim Integrated devices pin-compatible with the 8-TSSOP package of the STM706DS6F?

A: Yes. Both package designations refer to 8-pin thin shrink small-outline packages with identical 0.118" (3.00mm) width and pin pitch. The devices are mechanically and electrically interchangeable at the PCB footprint level.

Q: What is the difference between tube and tape & reel packaging formats?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-volume assembly. Tape & reel packaging supplies components on continuous carrier tape wound on reels, optimized for automated pick-and-place assembly equipment. The electrical and functional performance of the device is identical; the choice depends on assembly process requirements.

Q: Is the 0.02V difference in voltage threshold (4.38V for STM706DS6F versus 4.4V for Maxim substitutes) significant?

A: The 0.02V variance represents a 0.45% difference and falls within typical engineering tolerance for supervisor circuit applications. Both thresholds are functionally equivalent for monitoring 4.4V nominal supply rails. However, applications with tightly controlled threshold requirements should verify that the 4.4V specification meets system specifications before substitution.

Q: Can I substitute a tube-packaged part (DS1706EUA+) for a tape & reel part (STM706DS6F) in production?

A: Electrically and functionally, yes. However, tube packaging requires manual component handling and is not compatible with automated assembly equipment. Substitution is practical only if your assembly process supports manual placement or if you repackage the components into tape & reel format. For high-volume production, use tape & reel variants (DS1706EUA+T&R or MAX706EUA+T) to maintain assembly efficiency.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental and regulatory requirements of the STM706DS6F. All devices are also REACH unaffected and carry MSL 1 moisture sensitivity rating.

Q: Which substitute part offers the best overall compatibility with the STM706DS6F?

A: MAX706EUA+T provides the highest compatibility profile: identical operating temperature range (-40°C to 85°C), matching reset timeout (140ms minimum), tape & reel packaging format, and all critical electrical parameters. This variant is the direct functional equivalent and is recommended as the primary substitute when STM706DS6F availability is constrained.