MIC809MYC3 Equivalent & Substitute Parts

Part Overview

The MIC809MYC3 is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for reset and power-on reset applications. This device features push-pull totem pole output with a 4.38V threshold and 140ms minimum reset timeout, operating across -40°C to 85°C. The MIC809MYC3 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives with identical electrical specifications are available from Microchip Technology and Analog Devices Inc./Maxim Integrated.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.38V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MIC809MYC3 is determined by strict equivalence across the following critical parameters:

Voltage threshold: 4.38V
Output type: Push-Pull, Totem Pole
Reset logic: Active Low
Reset timeout: 140ms Minimum
Number of monitored voltages: 1
Mounting type: Surface Mount
RoHS and REACH compliance status

Substitute parts are grouped into two categories based on package compatibility:

SC-70/SOT-323 Package Group: MIC809MYC3-TR, TCM809MVLB713, MAX809MEXR+T — identical package footprint to the original part.

SOT-23-3 Package Group: TCM809MENB713, TCM809MVNB713 — alternative package with different physical dimensions but equivalent electrical performance.

All listed substitutes maintain identical electrical specifications and compliance certifications, with differences limited to packaging format and operating temperature range extensions in certain variants.

Parameter Comparison

Parameter	MIC809MYC3	MIC809MYC3-TR	TCM809MENB713	TCM809MVLB713	TCM809MVNB713	MAX809MEXR+T
Manufacturer	Microchip	Microchip	Microchip	Microchip	Microchip	Analog Devices/Maxim
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage Threshold	4.38V	4.38V	4.38V	4.38V	4.38V	4.38V
Output Type	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset Logic	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Min	140ms Min	140ms Min	140ms Min	140ms Min	140ms Min
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	SC-70, SOT-323	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3	SC-70, SOT-323
Packaging Format	Bulk	Tape & Reel	Cut Tape & Digi-Reel	Tape & Reel	Tape & Reel	Tape & Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Package Compatibility (SC-70/SOT-323):

MIC809MYC3-TR is the primary substitute, offering identical package footprint and electrical specifications with active product status. TCM809MVLB713 and MAX809MEXR+T provide equivalent SC-70 packaging with extended operating temperature range (-40°C to 125°C), suitable for applications requiring higher thermal performance.

For Alternative Package Compatibility (SOT-23-3):

TCM809MENB713 and TCM809MVNB713 deliver equivalent electrical performance in SOT-23-3 package format. TCM809MVNB713 includes extended temperature range (-40°C to 125°C). Both are actively produced with high inventory availability.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can MIC809MYC3-TR be used as a direct replacement for MIC809MYC3?

A: Yes. MIC809MYC3-TR is electrically and mechanically identical to MIC809MYC3, with the only difference being packaging format (Tape & Reel versus bulk). Both use SC-70/SOT-323 package and share identical electrical specifications.

Q: What is the difference between SC-70 and SOT-23-3 package options?

A: SC-70 (SOT-323) and SOT-23-3 are different physical packages with distinct footprints. SC-70 is smaller; SOT-23-3 is larger. Electrical performance is identical. PCB layout and component placement must accommodate the selected package.

Q: Do the extended temperature variants affect circuit performance?

A: No. TCM809MVLB713, TCM809MVNB713, and MAX809MEXR+T operate identically to MIC809MYC3 within the original -40°C to 85°C range. Extended temperature capability (-40°C to 125°C) provides additional margin for high-temperature applications without altering baseline specifications.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 rating and REACH unaffected status, meeting current regulatory requirements.

Q: Which substitute has the highest inventory availability?

A: TCM809MVNB713 has 35,200 units in stock, followed by TCM809MENB713 with 25,460 units. Both are actively produced and immediately available.

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