LM810M3X-2.93 Equivalent & Substitute Parts

Part Overview

The LM810M3X-2.93 is a single-channel power management supervisor IC manufactured by Texas Instruments, designed for reset and power-on reset applications in SOT-23-3 packaging. This device monitors a 2.93V threshold voltage and provides push-pull, totem pole output with active high reset signaling and a 140ms minimum reset timeout.

The LM810M3X-2.93 is classified as obsolete. Direct substitution requires identifying alternative supervisor ICs that maintain electrical and mechanical compatibility across the specified parameters while ensuring functional equivalence in reset circuit applications.

Key Parameters

Parameter	LM810M3X-2.93 Specification
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage Threshold	2.93V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active High
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C to 105°C (TA)
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the LM810M3X-2.93 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Voltage threshold: 2.93V (exact match required)
Output configuration: Push-Pull, Totem Pole
Reset logic: Active High
Reset timeout: 140ms Minimum
Number of voltages monitored: 1 Channel
Package / Case: SOT-23-3 (TO-236-3, SC-59)
Mounting type: Surface Mount
RoHS and REACH compliance status

Secondary Considerations:

Operating temperature range (LM810M3X-2.93 operates to 105°C; substitutes may operate to 85°C or 125°C)
Product status (active vs. obsolete)
Packaging format (Cut Tape, Tape & Reel, Digi-Reel)

Substitutes are grouped by voltage threshold alignment. Only parts with 2.93V threshold and identical electrical/mechanical specifications qualify as direct replacements.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Output	Reset Logic	Reset Timeout	Operating Temp (TA)	Package	Product Status
LM810M3X-2.93	Texas Instruments	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 105°C	SOT-23-3	Obsolete
MAX810SEUR+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 105°C	SOT-23-3	Active
ADM810SARTZ-REEL7	Analog Devices Inc.	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 125°C	SOT-23-3	Active
MIC810SUY-TR	Microchip Technology	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 85°C	SOT-23-3	Active
STM810SWX6F	STMicroelectronics	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 85°C	SOT-23-3	Active
TCM810SVLB713	Microchip Technology	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 125°C	SC-70-3	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (2.93V Threshold, SOT-23-3 Package):

MAX810SEUR+T and ADM810SARTZ-REEL7 are the primary active alternatives. Both maintain the 2.93V threshold, push-pull totem pole output, active high reset logic, and 140ms minimum reset timeout. MAX810SEUR+T operates to 105°C, matching the original LM810M3X-2.93 temperature range. ADM810SARTZ-REEL7 extends the upper operating limit to 125°C and is available in Tape & Reel packaging. Both are ROHS3 compliant and REACH unaffected.

MIC810SUY-TR (Microchip Technology) provides electrical equivalence with identical threshold and output specifications but operates to 85°C maximum. This part is suitable for applications where the reduced temperature range is acceptable.

STM810SWX6F (STMicroelectronics) offers equivalent functionality with 2.93V threshold and 85°C maximum operating temperature, available in Cut Tape and Digi-Reel packaging formats.

Alternative Package Consideration:

TCM810SVLB713 maintains all electrical parameters (2.93V threshold, push-pull output, active high reset, 140ms timeout) but uses SC-70-3 packaging instead of SOT-23-3. This part operates to 125°C and is suitable only if PCB layout accommodates the smaller SC-70 footprint.

All recommended substitutes are ROHS3 compliant, MSL 1 (Unlimited), and REACH unaffected, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can I substitute the LM810M3X-2.93 with any of the listed alternatives?

A: Direct substitution is limited to parts with identical 2.93V threshold voltage, push-pull totem pole output, active high reset logic, and SOT-23-3 packaging. MAX810SEUR+T, ADM810SARTZ-REEL7, MIC810SUY-TR, and STM810SWX6F meet these criteria. TCM810SVLB713 is electrically equivalent but uses SC-70-3 packaging and requires PCB redesign.

Q: What is the difference between MAX810SEUR+T and ADM810SARTZ-REEL7?

A: Both are 2.93V threshold supervisors with identical electrical specifications. MAX810SEUR+T operates to 105°C (matching the original part) and is supplied in Cut Tape and Digi-Reel formats. ADM810SARTZ-REEL7 extends the operating range to 125°C and is supplied in Tape & Reel format. Selection depends on temperature requirements and packaging preference.

Q: Why does MIC810SUY-TR have a lower maximum operating temperature (85°C vs. 105°C)?

A: MIC810SUY-TR is a Microchip Technology variant with identical electrical function but different thermal specifications. It is suitable for applications operating within the -40°C to 85°C range. For applications requiring 105°C operation, MAX810SEUR+T or ADM810SARTZ-REEL7 are required.

Q: Is TCM810SVLB713 a direct replacement?

A: TCM810SVLB713 is electrically equivalent but uses SC-70-3 packaging instead of SOT-23-3. This smaller package requires PCB layout modification and is not a direct pin-compatible replacement. Use only if your design can accommodate the SC-70 footprint.

Q: Are all substitutes RoHS and REACH compliant?

A: Yes. All listed substitutes are ROHS3 compliant, MSL 1 (Unlimited), and REACH unaffected, matching the regulatory status of the LM810M3X-2.93.

Q: What packaging formats are available for the recommended substitutes?

A: MAX810SEUR+T is available in Cut Tape and Digi-Reel formats. ADM810SARTZ-REEL7 is supplied in Tape & Reel. MIC810SUY-TR is supplied in Tape & Reel. STM810SWX6F is available in Cut Tape and Digi-Reel formats. TCM810SVLB713 is supplied in Tape & Reel.

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