MIC708RN Equivalent & Substitute Parts

Part Overview

The MIC708RN is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for power-on reset and simple reset applications in embedded systems. This 8-DIP through-hole component monitors a single voltage threshold and provides complementary output control. The MIC708RN is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain functional compatibility across reset timing, voltage monitoring, output characteristics, and package specifications.

Substiute Parts

MIC708RN

Microchip TechnologyIn Stock: 852MIC708RN Datasheet

Current PartRFQ

ADM708ANZ

Analog Devices Inc.In Stock: 4689ADM708ANZ Datasheet

MFR RecommendedRFQ

MAX708EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3563MAX708EPA+ Datasheet

MFR RecommendedRFQ

MAX708RCPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 778MAX708RCPA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC708RN are qualified based on the following critical parameters that determine functional interchangeability:

Primary Compatibility Criteria:

• Package type: 8-DIP (0.300", 7.62mm) through-hole mounting
• Voltage monitoring: Single channel
• Reset function: Simple reset/power-on reset with active high/active low logic
• Operating temperature range: Must support -40°C ~ 85°C minimum
• Reset timeout: 140ms minimum or equivalent
• Output configuration: Must support complementary or push-pull output modes

Substitution Logic: The MIC708RN operates with a 2.63V threshold and complementary output. Substitute parts meeting the above criteria are functionally equivalent for applications requiring single-channel voltage supervision with through-hole DIP packaging. Output type differences (complementary vs. push-pull) are acceptable where circuit design accommodates the alternative output configuration. Voltage threshold variations are acceptable provided the substitute part's threshold meets the application's monitoring requirements.

Parameter Comparison

Engineering Selection Recommendations

For Active Production (Recommended Primary Substitute): MAX708EPA+ is the preferred substitute for new designs and ongoing production. This part maintains active product status, ROHS3 compliance, and identical reset timeout specifications (140ms minimum) to the MIC708RN. The 4.4V threshold differs from the original 2.63V specification; circuit design must accommodate this threshold change. Operating temperature range (-40°C ~ 85°C) matches the MIC708RN requirement.

Alternative Substitute (Threshold-Matched): MAX708RCPA+ provides voltage threshold matching (2.63V) to the MIC708RN and identical reset timeout (140ms minimum). This part is classified as obsolete and has a reduced operating temperature range (0°C ~ 70°C), limiting suitability for applications requiring full -40°C ~ 85°C operation. Use only where temperature constraints are acceptable.

Secondary Substitute (Active Status, Threshold Variation): ADM708ANZ is an active product from Analog Devices Inc. with ROHS3 compliance. The 4.4V threshold and 160ms reset timeout differ from MIC708RN specifications. This part is suitable only for applications where these parameter variations are acceptable.

Compliance Consideration: All substitute parts achieve ROHS3 compliance, whereas the MIC708RN is RoHS non-compliant. For applications subject to RoHS regulations, substitute parts provide regulatory advantage.

Frequently Asked Questions (FAQ)

Q: Can MAX708EPA+ directly replace MIC708RN in existing designs? A: MAX708EPA+ is pin-compatible and functionally equivalent for single-channel voltage supervision in 8-DIP through-hole applications. The primary difference is voltage threshold: MAX708EPA+ monitors 4.4V versus MIC708RN's 2.63V. Circuit design must accommodate this threshold change. Reset timeout (140ms) and operating temperature range (-40°C ~ 85°C) are identical.

Q: What is the difference between complementary and push-pull output? A: MIC708RN provides complementary output (one active-high, one active-low signal). Substitute parts provide push-pull output (both outputs can source or sink current independently). Push-pull output is functionally compatible with complementary applications where circuit design accepts the alternative output configuration.

Q: Is MAX708RCPA+ suitable for applications requiring -40°C operation? A: No. MAX708RCPA+ operates from 0°C ~ 70°C, which does not meet the -40°C ~ 85°C requirement of the MIC708RN. Use MAX708EPA+ or ADM708ANZ for full temperature range compatibility.

Q: Why is ADM708ANZ listed as a substitute if the reset timeout is 160ms instead of 140ms? A: ADM708ANZ meets the core substitution criteria: single-channel voltage supervision, 8-DIP through-hole package, active high/active low reset logic, and -40°C ~ 85°C operating temperature. The 160ms reset timeout exceeds the 140ms minimum specification, making it functionally acceptable. Application-specific timing requirements must be evaluated.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts (ADM708ANZ, MAX708EPA+, MAX708RCPA+) are ROHS3 compliant. The original MIC708RN is RoHS non-compliant. For new designs subject to RoHS regulations, substitute parts provide compliance advantage.

Q: Can I use these substitutes in through-hole PCB designs without layout changes? A: Yes. All substitute parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging. PCB footprints and mounting methods are directly compatible with MIC708RN designs.