LM810M3X-2.63 Equivalent & Substitute Parts

Part Overview

The LM810M3X-2.63 is a single-channel power management supervisor IC manufactured by Texas Instruments, designed for simple reset and power-on reset applications. This component operates as a push-pull, totem pole output supervisor with a 2.63V voltage threshold and 140ms minimum reset timeout. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM810M3X-2.63
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Package / Case	TO-236-3, SC-59, SOT-23-3
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.63V
Output	Push-Pull, Totem Pole
Reset	Active High
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the LM810M3X-2.63 are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Voltage threshold: 2.63V (exact match required)
Output configuration: Push-Pull, Totem Pole
Reset polarity: Active High
Reset timeout: 140ms minimum
Package compatibility: SOT-23-3 (TO-236-3, SC-59)
Single channel supervisor functionality

Acceptable Variations:

Operating temperature range may extend beyond the original specification
Manufacturer may differ (Analog Devices, Microchip Technology)
Product status may be Active (preferred over Obsolete)

Parts meeting all primary criteria are direct functional equivalents. Parts with package variations (SC-70-3) are listed but require PCB layout modification.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Package	Reset Timeout	Operating Temp	Product Status
LM810M3X-2.63	Texas Instruments	2.63V	SOT-23-3	140ms Min	-40°C ~ 105°C	Obsolete
MAX810REUR+T	Analog Devices Inc./Maxim Integrated	2.63V	SOT-23-3	140ms Min	-40°C ~ 105°C	Active
ADM810RARTZ-REEL7	Analog Devices Inc.	2.63V	SOT-23-3	140ms Min	-40°C ~ 125°C	Active
MCP810T-270I/TT	Microchip Technology	2.625V	SOT-23-3	150ms Min	-40°C ~ 85°C	Active
MIC810RUY-TR	Microchip Technology	2.63V	SOT-23-3	140ms Min	-40°C ~ 85°C	Active
MIC810SUY-TR	Microchip Technology	2.93V	SOT-23-3	140ms Min	-40°C ~ 85°C	Active
ADM810RAKSZ-REEL7	Analog Devices Inc.	2.63V	SC-70-3	140ms Min	-40°C ~ 125°C	Active

Engineering Selection Recommendations

Preferred Direct Substitutes (Identical Specifications):

MAX810REUR+T and ADM810RARTZ-REEL7 are the primary recommended substitutes. Both maintain the 2.63V threshold, 140ms reset timeout, SOT-23-3 package, and active high reset configuration. Both are Active status products with ROHS3 compliance and unlimited moisture sensitivity rating. ADM810RARTZ-REEL7 offers extended operating temperature range (-40°C ~ 125°C) compared to the original specification.

Secondary Substitutes (Minor Parameter Variations):

MIC810RUY-TR matches all critical electrical parameters (2.63V threshold, 140ms timeout, active high reset, SOT-23-3 package) and is Active status. Operating temperature is limited to -40°C ~ 85°C, which is narrower than the original -40°C ~ 105°C range.

MCP810T-270I/TT provides functional equivalence with voltage threshold of 2.625V (within tolerance of 2.63V specification) and reset timeout of 150ms (exceeds 140ms minimum requirement). Operating temperature range is -40°C ~ 85°C. This part is suitable where the slightly higher threshold and timeout are acceptable.

Package Variant:

ADM810RAKSZ-REEL7 is functionally equivalent but uses SC-70-3 package instead of SOT-23-3. This substitution requires PCB layout modification and is recommended only when SOT-23-3 alternatives are unavailable.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance, unlimited MSL rating, and REACH unaffected status consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can MAX810REUR+T directly replace LM810M3X-2.63 without PCB modification?

A: Yes. MAX810REUR+T is pin-compatible in SOT-23-3 package with identical voltage threshold (2.63V), reset timeout (140ms), output configuration (push-pull, totem pole), and reset polarity (active high). No PCB layout changes are required.

Q: What is the difference between MIC810RUY-TR and MIC810SUY-TR?

A: Both parts use SOT-23-3 package and share identical reset timeout (140ms) and output configuration. The primary difference is voltage threshold: MIC810RUY-TR is 2.63V (matches original specification), while MIC810SUY-TR is 2.93V. MIC810RUY-TR is the correct substitute for the LM810M3X-2.63.

Q: Why is ADM810RAKSZ-REEL7 listed if it uses a different package?

A: ADM810RAKSZ-REEL7 uses SC-70-3 package instead of SOT-23-3. While electrically equivalent, this package change requires PCB redesign. It is listed as an alternative only when SOT-23-3 options are unavailable.

Q: Is MCP810T-270I/TT a suitable substitute despite the 2.625V threshold?

A: MCP810T-270I/TT has voltage threshold of 2.625V versus the original 2.63V specification, representing a 0.005V difference. Reset timeout is 150ms versus 140ms minimum. These minor variations may be acceptable depending on circuit design margins. Operating temperature range is limited to -40°C ~ 85°C. Verify circuit requirements before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), consistent with the original LM810M3X-2.63 specification.

Q: What is the inventory status of recommended substitutes?

A: MAX810REUR+T has 159,600 pieces in stock. ADM810RARTZ-REEL7 has 4,003 pieces. MIC810RUY-TR has 719 pieces. MCP810T-270I/TT has 23,200 pieces. Verify current availability with your supplier before final procurement decisions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message