LM809M3X-2.93 Equivalent & Substitute Parts

Part Overview

The LM809M3X-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 surface mount packaging. This component monitors a single voltage threshold at 2.93V and provides active-low reset output with push-pull, totem pole configuration.

The original LM809M3X-2.93 carries obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing status and current compliance certifications.

Substiute Parts

LM809M3X-2.93

Texas InstrumentsIn Stock: 29404LM809M3X-2.93 Datasheet

Current PartRFQ

LM809M3X-2.93/NOPB

Texas InstrumentsIn Stock: 35328LM809M3X-2.93/NOPB Datasheet

DirectRFQ

LM809M3-2.93

Texas InstrumentsIn Stock: 28355LM809M3-2.93 Datasheet

Parametric EquivalentRFQ

LM809M3-2.93/NOPB

Texas InstrumentsIn Stock: 4414LM809M3-2.93/NOPB Datasheet

Parametric EquivalentRFQ

APX809S-29SA-7

Diodes IncorporatedIn Stock: 12137APX809S-29SA-7 Datasheet

MFR RecommendedRFQ

CAT809STBI-GT3

onsemiIn Stock: 95367CAT809STBI-GT3 Datasheet

MFR RecommendedRFQ

MAX809SEUR+

Analog Devices Inc./Maxim IntegratedIn Stock: 2114MAX809SEUR+ Datasheet

MFR RecommendedRFQ

STM809SWX6F

STMicroelectronicsIn Stock: 15270STM809SWX6F Datasheet

MFR RecommendedRFQ

TCM809SVNB713

Microchip TechnologyIn Stock: 5204TCM809SVNB713 Datasheet

MFR RecommendedRFQ

MAX809SEUR+T

Analog Devices Inc./Maxim IntegratedIn Stock: 107629MAX809SEUR+T Datasheet

Parametric EquivalentRFQ

MAX809SEUR+T10

Analog Devices Inc./Maxim IntegratedIn Stock: 912MAX809SEUR+T10 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM809M3X-2.93 are classified based on strict parametric equivalence. All substitute candidates maintain identical electrical specifications across the following critical parameters:

• Single voltage monitoring channel
• 2.93V threshold voltage
• Push-pull, totem pole output configuration
• Active-low reset logic
• 140ms minimum reset timeout
• SOT-23-3 surface mount package
• MSL 1 rating

Substitutes are grouped into three categories: direct manufacturer equivalents from Texas Instruments, parametric equivalents from alternative manufacturers, and manufacturer-recommended alternatives. Product status and compliance certifications are provided to support selection decisions for obsolete component replacement.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete LM809M3X-2.93, the following selection criteria apply:

Primary Recommendation: LM809M3X-2.93/NOPB (Texas Instruments) — Direct equivalent with active product status and ROHS3 compliance. Maintains identical electrical and thermal specifications with the original part.

Alternative from Texas Instruments: LM809M3-2.93/NOPB — Active status with full parametric equivalence. Suitable for new designs and obsolescence mitigation.

Cross-Manufacturer Alternatives: APX809S-29SA-7 (Diodes Incorporated), MAX809SEUR+T (Analog Devices Inc./Maxim Integrated), and TCM809SVNB713 (Microchip Technology) provide active product status with extended operating temperature ranges (-40°C ~ 125°C) compared to the original specification. All maintain identical threshold voltage, output configuration, and reset timing.

Temperature-Constrained Applications: STM809SWX6F (STMicroelectronics) and CAT809STBI-GT3 (onsemi) operate within -40°C ~ 85°C range. CAT809STBI-GT3 carries obsolete status and should be avoided for new designs.

All recommended substitutes carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can LM809M3X-2.93/NOPB directly replace the obsolete LM809M3X-2.93?

A: Yes. LM809M3X-2.93/NOPB is the direct equivalent with identical electrical specifications, package, and thermal range. The /NOPB suffix indicates lead-free, RoHS3 compliant manufacturing. No circuit modifications are required.

Q: What is the difference between LM809M3X-2.93 and LM809M3-2.93?

A: Both parts share identical electrical parameters and threshold voltage. The primary difference is product status: LM809M3-2.93 is Last Time Buy, while LM809M3X-2.93/NOPB is Active. For new designs, select the /NOPB variant.

Q: Are cross-manufacturer substitutes electrically compatible?

A: Yes. APX809S-29SA-7, MAX809SEUR+T, STM809SWX6F, and TCM809SVNB713 maintain identical voltage threshold (2.93V), output configuration (push-pull, totem pole), reset logic (active low), and reset timeout (140ms minimum). All are packaged in SOT-23-3 and are pin-compatible.

Q: Which substitute offers the widest operating temperature range?

A: APX809S-29SA-7 (Diodes Incorporated) and TCM809SVNB713 (Microchip Technology) both support -40°C ~ 125°C, extending 20°C above the original LM809M3X-2.93 specification (-40°C ~ 105°C).

Q: Are all substitutes RoHS3 compliant?

A: All active and last-time-buy substitutes listed carry ROHS3 compliance. The original LM809M3X-2.93 is RoHS non-compliant. LM809M3X-2.93/NOPB provides RoHS3 compliance as the direct replacement.

Q: What packaging options are available?

A: All substitutes are supplied in SOT-23-3 surface mount package. Packaging formats vary: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), or unspecified. Verify packaging availability with your supplier for production requirements.

Q: Can I use MAX809SEUR+T10 instead of MAX809SEUR+T?

A: Yes. Both are parametric equivalents with identical electrical specifications. MAX809SEUR+T10 is supplied in Tape & Reel (TR) format, while MAX809SEUR+T is available in Cut Tape (CT) & Digi-Reel® format. Selection depends on packaging and quantity requirements.