My Inquiry
My Account
Texas Instruments LM810M3-2.63/NOPB
- Part No.:
- LM810M3-2.63/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM810M3-2.63/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,881
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM810M3-2.63/NOPB from Texas Instruments is a 3-pin SOT-23 active-high microprocessor reset supervisor IC designed for power supply monitoring in embedded digital systems. It asserts a high-level RESET signal when VCC falls below 2.63 V (±3% over temperature), maintains reset for ≥140 ms after VCC recovers, and operates down to VCC = 1 V with 15 µA typical supply current. It is used in industrial controllers and battery-powered instrumentation requiring reliable brown-out detection.
For engineers reviewing the LM810M3-2.63/NOPB datasheet, LM810M3-2.63/NOPB pinout, LM810M3-2.63/NOPB application, or LM810M3-2.63/NOPB equivalent, this page provides verified functional specifications, thermal and timing behavior across –40°C to 105°C, package dimensions, real-world interface guidance for bidirectional µP reset pins, and validated alternative options for 2.63 V threshold supervision.
Technical Context
The LM810M3-2.63/NOPB implements a precision bandgap-based voltage comparator with factory-trimmed 2.63 V reset threshold and internal 240 ms timeout timer. Its active-high RESET output remains asserted while VCC < 2.63 V and for 240 ms after VCC rises above threshold, ensuring stable deassertion during power-up transients.
It features guaranteed operation down to VCC = 1 V, low 15 µA supply current at 25°C, ±30 ppm/°C temperature coefficient on threshold, and immunity to VCC transients ≤20 µs at 100 mV underdrive - all specified across –40°C to 105°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V ±3% (–40°C to 85°C); ensures reliable detection of brown-out on 3.0 V nominal supplies at 85–90% undervoltage. |
| Reset Timeout | 240 ms typical; guarantees sufficient hold time for microprocessor initialization before release. |
| Supply Current | 15 µA typical at 25°C; enables use in always-on battery-backed systems without significant drain. |
| VCC Operating Range | 1.0 V to 5.5 V; supports valid RESET assertion even during deep brown-out conditions. |
| Output Type | Active-high open-drain compatible; RESET remains high during fault and drops low only after timeout completion. |
| Temperature Range | –40°C to +105°C; qualified for industrial and automotive under-hood environments. |
| ESD Rating | ±2000 V HBM; meets standard handling requirements for automated assembly lines. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary return path for internal comparator and output stage; must be connected to system ground plane with low impedance. |
| RESET | Active-high reset output | Open-drain capable output; requires external pull-up for logic-high drive; sinks current only during reset assertion. |
| VCC | Supply voltage input | Monitored rail input; also powers internal circuitry; accepts 1.0–5.5 V with transient immunity up to 100 mV/20 µs. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63 V threshold | Factory-trimmed ±3% tolerance over –40°C to 85°C ensures accurate brown-out detection on 3.0 V systems without external calibration. |
| 240 ms reset timeout | Guaranteed minimum 140 ms pulse width ensures full µP core and peripheral initialization before release. |
| Low 15 µA supply current | Enables integration into energy-sensitive applications such as portable data loggers and sensor nodes. |
| VCC = 1 V operation | Ensures deterministic reset behavior even during severe undervoltage events where other supervisors may fail. |
| Power supply transient immunity | Rejects VCC glitches ≤20 µs duration at 100 mV underdrive, reducing false resets in noisy industrial environments. |
Applications
| Industrial PLC I/O Modules | Smart Energy Meters |
|---|---|
|
Use Scenario: Power cycling during grid fluctuations causes repeated brown-outs in metering hardware. IC Role / Device Role / Timing Role: LM810M3-2.63/NOPB monitors 3.0 V auxiliary rail and holds µP in reset until stable post-fault recovery. Use Value: Prevents corrupted flash writes and invalid register states by enforcing 240 ms minimum reset hold time after voltage restoration. |
Use Scenario: Battery-backed real-time clock and metrology ASIC require clean startup after main supply interruption. IC Role / Device Role / Timing Role: LM810M3-2.63/NOPB asserts active-high RESET during 3.0 V rail collapse and releases only after 240 ms stability. Use Value: Eliminates need for discrete RC timing networks while maintaining compliance with IEC 62053-21 power-fail response requirements. |
| Programmable Logic Controllers | Factory Automation Sensors |
|
Use Scenario: Hot-swap power modules introduce rapid VCC droop during insertion/removal. IC Role / Device Role / Timing Role: LM810M3-2.63/NOPB detects sub-2.63 V excursions on 3.0 V FPGA configuration rail and triggers controlled shutdown sequence. Use Value: Avoids partial configuration lockup by guaranteeing reset assertion for ≥140 ms even at 105°C junction temperature. |
Use Scenario: Wireless sensor nodes powered by Li-SOCl₂ batteries experience gradual voltage decay over years. IC Role / Device Role / Timing Role: LM810M3-2.63/NOPB supervises 3.0 V LDO output and initiates graceful shutdown before critical undervoltage. Use Value: Enables deterministic low-power state entry using active-high RESET signal compatible with ARM Cortex-M reset controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G125DBVR | 2.5 V threshold (±0.5%), 200 ms timeout, 1.6 µA quiescent current, enable input. | Lower threshold better suited for 2.5 V systems; ultra-low IQ extends battery life but lacks same transient immunity. | Select when optimizing for sub-5 µA standby current and 2.5 V rail supervision; verify VCC transient profile compatibility. |
| MAX809TRD3T | 2.63 V threshold (±2.5%), 140 ms min timeout, 12 µA IQ, same SOT-23-3 package. | Near-identical electrical specs but higher production risk due to discontinued status and limited long-term availability. | Use only for legacy redesigns with existing MAX809 footprint; prefer LM810M3-2.63/NOPB for new designs requiring TI's 10+ year product longevity commitment. |
Compared with TPS3808G125DBVR and MAX809TRD3T, the LM810M3-2.63/NOPB delivers superior thermal stability (±30 ppm/°C vs ±50 ppm/°C), guaranteed 240 ms timeout (vs 200 ms typical), and documented support for VCC ≥1 V operation - making it optimal for industrial edge devices operating across wide ambient ranges.
Availability
LM810M3-2.63/NOPB is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, programmable logic controllers, and factory automation sensors requiring stable component supply with full lifecycle support.
Supply support for LM810M3-2.63/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM810 series belongs to TI's microprocessor supervisory IC portfolio, engineered specifically for robust power-on reset, brown-out protection, and supply voltage monitoring in harsh industrial environments.
FAQ
What is the exact reset threshold voltage of LM810M3-2.63/NOPB and how does it vary with temperature?
The LM810M3-2.63/NOPB has a factory-programmed reset threshold of 2.63 V with ±3% tolerance over –40°C to +85°C and ±4.5% over –40°C to +105°C. Its temperature coefficient is ±30 ppm/°C, meaning threshold drift is bounded to ±0.79 mV/°C across the full range - confirmed in Section 6.5 of the SNVS052E datasheet.
Does LM810M3-2.63/NOPB support operation below 1.0 V on the VCC pin?
No. The LM810M3-2.63/NOPB guarantees functional operation only down to VCC = 1.0 V per Recommended Operating Conditions (Section 6.3). Below 1.0 V, RESET output behavior is not characterized, and the device may not assert or maintain a valid logic level - consistent with its specification as a 1.0–5.5 V supervisor.
Can LM810M3-2.63/NOPB drive a microprocessor reset pin directly without external components?
Yes, LM810M3-2.63/NOPB can drive most µP reset pins directly when used with an external pull-up resistor (e.g., 10 kΩ to VCC), as its active-high open-drain output sources up to 150 µA at 0.8×VCC. For bidirectional reset pins like those on Motorola 68HC11, a 4.7 kΩ series resistor is recommended per Figure 9 in the datasheet.
What is the maximum VCC transient duration LM810M3-2.63/NOPB can reject without triggering a false reset?
Per Figure 8 and Section 7.3.1.2, LM810M3-2.63/NOPB rejects negative-going VCC transients ≤20 µs in duration when the undershoot is 100 mV below the 2.63 V threshold. This immunity is enhanced by placing a 0.1 µF bypass capacitor close to the VCC pin, as specified in Layout Guidelines (Section 10.1).
Is LM810M3-2.63/NOPB RoHS compliant and what is its moisture sensitivity level?
Yes, LM810M3-2.63/NOPB is RoHS compliant (lead-free, Sn finish) and rated MSL Level-1 at 260°C peak reflow per JEDEC J-STD-020. Its tape-and-reel packaging (1000 pcs/reel, DBZ package) supports standard SMT assembly without baking requirements.
LM810M3-2.63/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- 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)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM810M3-2.63/NOPB FAQ
1.How can I place an order for LM810M3-2.63/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM810M3-2.63/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM810M3-2.63/NOPB reliable?
The price and inventory of LM810M3-2.63/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM810M3-2.63/NOPB is usually 5 days.
3.What payment methods are accepted for LM810M3-2.63/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM810M3-2.63/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM810M3-2.63/NOPB?
LM810M3-2.63/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM810M3-2.63/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM810M3-2.63/NOPB?
For technical support, including LM810M3-2.63/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM810M3-2.63/NOPB requirements.
6.How does Aetrix verify that LM810M3-2.63/NOPB is sourced from the original manufacturer or authorized distributors?
All LM810M3-2.63/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM810M3-2.63/NOPB meets industry standards.
7.What is the process for return or replacement of LM810M3-2.63/NOPB?
All LM810M3-2.63/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM810M3-2.63/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM810M3-2.63/NOPB part is unused and in its original packaging.
Return procedure for LM810M3-2.63/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM810M3-2.63/NOPB Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
