LM810M3-2.63 Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
The LM810M3-2.63 is a single-channel microprocessor supervisory reset IC from Texas Instruments with a fixed threshold of 2.63 V and an active-low reset output. Housed in a 3-pin SOT-23 package, it provides reliable power-on reset and brown-out detection for microcontroller and DSP systems.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- LM810M3-2.63 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed reset threshold of 2.63 V for precise brown-out detection in 3.3 V systems
- Single-channel voltage supervisor with active-low open-drain reset output
- Ultra-compact 3-pin SOT-23 package occupying less than 5 mm² of board area
- Guaranteed reset assertion down to VCC = 1 V for robust power-fail detection
- No external components required — threshold and timeout are internally fixed
- Supply current typically under 15 µA for minimal quiescent power consumption
Applications
The LM810M3-2.63 is commonly used to supervise the power supply of microcontrollers and FPGAs in industrial controllers, handheld instruments, and IoT edge nodes where an uninitialized processor state due to a brown-out could corrupt data or cause unsafe behavior. Its fixed 2.63 V threshold makes it a direct drop-in for 3.3 V systems that require a reliable reset signal during power-up and power-down sequences.
Specifications
| YTEOL | 0 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.2V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.63V |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM810M3-2.63:
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +4.63V, CMOS, PDSO3
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +3.08V, CMOS, PDSO3
Frequently Asked Questions
At what voltage threshold does the LM810M3-2.63 assert its reset output, and how does this relate to 3.3 V system design?
The LM810M3-2.63 asserts its active-low reset output when the monitored supply drops below 2.63 V. In a 3.3 V system, this 2.63 V threshold provides approximately 670 mV of headroom above the typical minimum operating voltage of most 3.3 V microcontrollers, ensuring a clean reset before the processor enters an indeterminate state.
How many external components are needed to use the LM810M3-2.63 in a microcontroller reset circuit?
The LM810M3-2.63 requires zero external components — the threshold voltage of 2.63 V and internal reset timeout are fixed internally. This single-component approach reduces BOM cost and board area to just the 3-pin SOT-23 package footprint, saving design time compared to discrete RC-based reset circuits.
Which low-power applications benefit most from the LM810M3-2.63 quiescent current specification?
Battery-powered IoT sensors, wearables, and remote meter-reading nodes benefit most, since the LM810M3-2.63 draws typically under 15 µA of quiescent current. Over a year of continuous operation from a 1000 mAh cell, the supervisor itself contributes less than 130 mAh of total drain, preserving the bulk of battery capacity for the main MCU and radio.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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