MIC708SN Equivalent & Substitute Parts

Part Overview

The MIC708SN is a supervisor integrated circuit from Microchip Technology designed for power management applications. It functions as a simple reset/power-on reset controller monitoring a single voltage channel with complementary output configuration. The device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. Substitute parts must maintain compatibility across electrical specifications, package form factor, and operational characteristics to ensure direct replacement capability.

Substiute Parts

MIC708SN

Microchip TechnologyIn Stock: 1012MIC708SN Datasheet

Current PartRFQ

MAX708TCPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 935MAX708TCPA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC708SN is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Package form factor: 8-DIP (0.300", 7.62mm) with through-hole mounting
• Functional type: Simple reset/power-on reset supervisor
• Number of monitored voltage channels: 1
• Reset logic capability: Active High/Active Low
• Reset timeout specification: 140ms minimum
• Voltage threshold range: Compatible with 2.93V threshold application

Allowable Parameter Variations:

• Output configuration: Complementary or push-pull outputs are functionally compatible in reset supervisor applications
• Voltage threshold: Slight variations (2.93V to 3.08V) remain within acceptable tolerance for supervisor threshold applications
• Operating temperature range: Substitute parts may have narrower ranges if the application operates within the substitute's specified limits
• Product status: Active products are preferred for long-term availability
• Compliance certifications: RoHS3 compliance is preferred but not mandatory for obsolete part replacement

Parameter Comparison

Engineering Selection Recommendations

The MAX708TCPA+ qualifies as a direct substitute for the MIC708SN based on matching package geometry, functional classification, and core electrical specifications. Both devices share identical 8-DIP through-hole packaging, single-channel voltage monitoring architecture, and 140ms minimum reset timeout.

Substitution Advantages:

• MAX708TCPA+ maintains active product status, ensuring continued availability and supply chain stability
• ROHS3 compliance of the substitute aligns with modern manufacturing and environmental standards
• Identical reset timeout and dual-polarity reset logic preserve functional compatibility

Operational Considerations:

• The voltage threshold differential (2.93V versus 3.08V) represents a 5.1% variation. Applications requiring precise threshold matching at 2.93V must evaluate whether the 3.08V threshold of the substitute remains acceptable within system design margins.
• Operating temperature range of the substitute (0°C ~ 70°C) is narrower than the original part (-40°C ~ 85°C). Substitution is valid only for applications operating within the 0°C to 70°C envelope.
• Output configuration differs (complementary versus push-pull). Both configurations provide active high and active low reset outputs; circuit-level verification is required to confirm compatibility with existing reset signal conditioning.

Frequently Asked Questions (FAQ)

Q: Can the MAX708TCPA+ directly replace the MIC708SN in existing designs?

A: Direct replacement is possible if the application operates within 0°C to 70°C and the 3.08V threshold is acceptable for the monitored voltage. The push-pull output configuration must be verified as compatible with the existing reset signal path.

Q: What is the significance of the voltage threshold difference between 2.93V and 3.08V?

A: The threshold determines the voltage level at which the supervisor triggers a reset signal. The 0.15V difference (5.1% variation) may be acceptable depending on the monitored supply voltage tolerance and system reset margin requirements. Applications with tight voltage regulation may require threshold verification.

Q: Are there temperature range limitations when substituting?

A: Yes. The MAX708TCPA+ operates from 0°C to 70°C, which is narrower than the MIC708SN range of -40°C to 85°C. Substitution is valid only if the application's operating environment falls within 0°C to 70°C.

Q: What does the output configuration difference mean for circuit compatibility?

A: The MIC708SN provides complementary outputs (one active high, one active low from a single monitoring function). The MAX708TCPA+ provides push-pull outputs. Both deliver active high and active low reset signals; however, the electrical drive characteristics and output impedance may differ. Circuit-level compatibility assessment is necessary.

Q: Is RoHS compliance a requirement for substitution?

A: RoHS compliance is not a functional requirement for substitution but reflects manufacturing and environmental standards. The ROHS3-compliant MAX708TCPA+ is preferred for new designs and long-term supply chain considerations.

Q: What package considerations apply to this substitution?

A: Both parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging. No PCB layout or mechanical modifications are required for package compatibility.