MIC809SYC3 Equivalent & Substitute Parts

Part Overview

The MIC809SYC3 is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for reset and power-on reset applications in embedded systems. This device features push-pull totem pole output with a 2.93V threshold and 140ms minimum reset timeout, operating across -40°C to 85°C. The MIC809SYC3 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Active alternatives from both Microchip Technology and Analog Devices Inc./Maxim Integrated provide direct functional replacement with enhanced availability and extended temperature ranges.

Substiute Parts

MIC809SYC3

Microchip TechnologyIn Stock: 780MIC809SYC3 Datasheet

Current PartRFQ

TCM809SENB713

Microchip TechnologyIn Stock: 45070TCM809SENB713 Datasheet

MFR RecommendedRFQ

TCM809SVLB713

Microchip TechnologyIn Stock: 4249TCM809SVLB713 Datasheet

MFR RecommendedRFQ

TCM809SVNB713

Microchip TechnologyIn Stock: 5204TCM809SVNB713 Datasheet

MFR RecommendedRFQ

MAX6381XR29D2+T

Analog Devices Inc./Maxim IntegratedIn Stock: 983MAX6381XR29D2+T Datasheet

MFR RecommendedRFQ

MAX6381XR29D3+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3896MAX6381XR29D3+T Datasheet

MFR RecommendedRFQ

MAX809SEXR+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3430MAX809SEXR+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC809SYC3 is determined by strict equivalence across the following critical parameters:

Core Functional Parameters:

• Single-channel voltage monitoring with 2.93V threshold
• Push-pull totem pole output configuration
• Active low reset signal
• 140ms minimum reset timeout
• Simple reset/power-on reset functionality

Physical & Environmental Parameters:

• Surface mount packaging (SC-70/SOT-323 or SOT-23-3 compatible footprints)
• Operating temperature range minimum of -40°C
• Moisture sensitivity level 1 (unlimited)
• ROHS3 compliance and REACH unaffected status

Substitute Categories:

1. Microchip Technology TCM809 Series (TCM809SENB713, TCM809SVLB713, TCM809SVNB713): Direct Microchip replacements with identical functional specifications and extended temperature ranges (-40°C to 125°C). Available in both SOT-23-3 and SC-70-3 packages with active product status.

2. Analog Devices Inc./Maxim Integrated MAX6381 & MAX809 Series (MAX6381XR29D2+T, MAX6381XR29D3+T, MAX809SEXR+T): Cross-manufacturer alternatives meeting all core functional requirements with SC-70-3 packaging and extended temperature operation (-40°C to 125°C). MAX6381XR29D2+T features 20ms reset timeout; MAX6381XR29D3+T and MAX809SEXR+T maintain 140ms timeout specification.

All substitutes maintain identical voltage threshold, output type, reset polarity, and compliance certifications as the original MIC809SYC3.

Parameter Comparison

Engineering Selection Recommendations

For Direct Package Compatibility (SC-70-3): TCM809SVLB713, MAX6381XR29D3+T, and MAX809SEXR+T maintain identical SC-70-3 packaging as the MIC809SYC3, enabling direct PCB footprint compatibility. All three are active products with ROHS3 compliance and extended operating temperature ranges to -40°C to 125°C.

For Alternative Package Options (SOT-23-3): TCM809SENB713 and TCM809SVNB713 provide functionally equivalent substitution in SOT-23-3 packaging. These require PCB layout modification but offer the same electrical performance and Microchip Technology manufacturing continuity.

For Reset Timeout Considerations: MAX6381XR29D2+T features a 20ms minimum reset timeout, differing from the 140ms specification of the MIC809SYC3. This part is suitable only for applications where shorter reset assertion is acceptable. MAX6381XR29D3+T and MAX809SEXR+T maintain the 140ms timeout specification for direct functional equivalence.

Compliance & Availability: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating. Microchip Technology TCM809 series provides manufacturer continuity; Analog Devices Inc./Maxim Integrated alternatives offer cross-manufacturer redundancy with active product status and higher inventory availability.

Frequently Asked Questions (FAQ)

Q: Can TCM809SENB713 replace MIC809SYC3 directly on the PCB? A: TCM809SENB713 is functionally equivalent but uses SOT-23-3 packaging instead of SC-70-3. Direct PCB replacement requires layout modification. TCM809SVLB713 provides identical SC-70-3 packaging for direct substitution.

Q: What is the difference between MAX6381XR29D2+T and MAX6381XR29D3+T? A: Both use SC-70-3 packaging and 2.93V threshold. MAX6381XR29D2+T specifies 20ms minimum reset timeout; MAX6381XR29D3+T specifies 140ms minimum reset timeout, matching the MIC809SYC3 original specification.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (TCM809SENB713, TCM809SVLB713, TCM809SVNB713, MAX6381XR29D2+T, MAX6381XR29D3+T, MAX809SEXR+T) are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity.

Q: Which substitute offers the best availability? A: TCM809SENB713 has the highest inventory (44,991 pcs), followed by TCM809SVNB713 (5,119 pcs) and TCM809SVLB713 (4,161 pcs). All Microchip Technology TCM809 variants are active products with superior stock levels compared to Analog Devices alternatives.

Q: Can I use MAX809SEXR+T as a drop-in replacement? A: MAX809SEXR+T is functionally equivalent with SC-70-3 packaging and 140ms reset timeout. It is a cross-manufacturer alternative suitable for designs requiring Analog Devices sourcing or redundancy, with extended -40°C to 125°C operating range.

Q: What is the operating temperature advantage of substitute parts? A: The MIC809SYC3 operates -40°C to 85°C. All active substitutes extend the upper limit to 125°C, providing wider thermal margin for industrial and automotive applications.