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Texas Instruments LM810M3-3.08/NOPB
- Part No.:
- LM810M3-3.08/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM810M3-3.08/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,421
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Product details
Overview
LM810M3-3.08/NOPB from Texas Instruments is a 3-pin SOT-23 microprocessor supervisory circuit with factory-programmed 3.08 V reset threshold, active-high RESET output, 240 ms typical reset timeout, and 15 µA typical supply current. It monitors 3.3 V supply rails in embedded controllers and ensures reliable power-up/power-down reset assertion for industrial PLCs and battery-powered instrumentation.
For engineers reviewing the LM810M3-3.08/NOPB datasheet, LM810M3-3.08/NOPB pinout, LM810M3-3.08/NOPB application, or LM810M3-3.08/NOPB equivalent, key selection criteria include reset threshold accuracy (±3% over –40°C to 105°C), guaranteed RESET validity down to VCC ≥1 V, immunity to VCC transients ≤20 µs, and compatibility with bidirectional µP reset pins via 4.7 kΩ series resistor.
Technical Context
The LM810M3-3.08/NOPB integrates a precision voltage comparator with internal reference and a 240 ms monostable timer. Its reset assertion logic triggers when VCC falls below 3.08 V and holds RESET high for ≥140 ms after VCC recovers above threshold, with temperature coefficient of 30 ppm/°C ensuring stability across –40°C to 105°C.
It operates from 1.0 V to 5.5 V supply range, sinks ≤1.2 mA at RESET low (VOL = 0.3 V), sources ≥150 µA at RESET high (VOH = 0.8 × VCC), and maintains functional reset behavior even during brown-out conditions where VCC dips transiently below 1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±3% (ensures reset activation within 90–95% of nominal 3.3 V rail) |
| Reset Timeout | 240 ms typical (guarantees sufficient hold time for µP initialization sequences) |
| Supply Current | 15 µA typical at 25°C (enables use in always-on battery-backed systems) |
| VCC Operating Range | 1.0 V to 5.5 V (supports valid RESET output even during deep brown-out) |
| Output Type | Active-high open-drain (requires external pull-up for logic-high assertion) |
| Temperature Range | –40°C to +105°C (qualified for industrial and automotive under-hood environments) |
| ESD Rating | ±2000 V HBM (robust handling in standard manufacturing ESD control processes) |
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 | Return path for internal comparator and output stage; must be connected to system ground plane |
| RESET | Active-high output | Open-drain output asserted high during reset; requires external pull-up resistor to VCC or logic rail |
| VCC | Supply input | Monitored power rail input; also powers internal circuitry; accepts 1.0–5.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.08 V threshold | ±3% tolerance over full temperature range ensures reliable detection of 3.3 V rail collapse before µP malfunction |
| 240 ms reset timeout | Guaranteed minimum 140 ms hold time prevents premature release during slow-rising VCC in cold-start scenarios |
| Low 15 µA supply current | Enables integration into energy-sensitive applications such as portable data loggers and wireless sensor nodes |
| VCC transient immunity | Rejects negative-going glitches ≤20 µs duration at 100 mV below threshold without false triggering |
| Bidirectional µP interface support | Compatible with Motorola 68HC11-style reset pins using 4.7 kΩ series resistor to prevent bus contention |
Applications
| Industrial PLC Control | Smart Energy Metering |
|---|---|
Use Scenario: Power cycling during firmware updates in programmable logic controllers. IC Role / Device Role / Timing Role: Monitors 3.3 V I/O rail and asserts active-high RESET to halt CPU execution until stable voltage is confirmed. Use Value: Prevents corrupted register writes during partial power-up by enforcing 240 ms minimum reset hold time. |
Use Scenario: Brown-out recovery in utility-grade electricity meters with backup supercapacitor. IC Role / Device Role / Timing Role: Detects 3.3 V supply sag below 3.08 V and holds RESET high until main rail recovers and stabilizes. Use Value: Ensures EEPROM write integrity by blocking µP operation until VCC exceeds 3.08 V for ≥240 ms. |
| Factory Automation Sensors | Portable Medical Diagnostics |
Use Scenario: Hot-swap insertion of modular I/O modules in distributed control systems. IC Role / Device Role / Timing Role: Provides clean power-on reset signal synchronized to local 3.3 V LDO output. Use Value: Eliminates metastability in FPGA configuration state machines by guaranteeing monotonic reset deassertion. |
Use Scenario: Battery voltage decay during extended field use in handheld diagnostic analyzers. IC Role / Device Role / Timing Role: Supervises 3.3 V buck converter output and forces controlled shutdown before critical voltage collapse. Use Value: Extends usable battery life by enabling graceful data save and sleep entry at precisely 3.08 V threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX810LUR30+T | 3.00 V threshold (±2.5%), 140 ms min timeout, 2.5 µA max quiescent current | Lower threshold better suited for 3.0 V systems; tighter current spec enables ultra-low-power designs | Select when operating from 3.0 V rails or requiring sub-5 µA supply current |
| TPS3808G30DBVR | 3.0 V threshold (±0.5%), adjustable delay (0.5–10 s), 1.1 µA typical IQ | Programmable timeout supports complex boot sequences; higher accuracy enables tighter margin designs | Select when precise timing control or <1 µA standby current is required |
Compared with MAX810LUR30+T and TPS3808G30DBVR, the LM810M3-3.08/NOPB offers superior thermal stability (30 ppm/°C vs. 50 ppm/°C typical) and broader VCC operating range (1.0–5.5 V vs. 1.8–5.5 V), making it preferred for wide-temperature industrial deployments where 3.3 V rail monitoring is fixed and robustness outweighs programmability.
Availability
LM810M3-3.08/NOPB is available at Aetrix Electronics and suitable for industrial PLCs, smart energy metering, factory automation sensors, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM810M3-3.08/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 specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and microcontroller solutions.
The LM810 series belongs to TI's microprocessor supervisory product line, designed specifically to provide cost-effective, high-reliability reset supervision for 3.3 V and 5 V digital systems in industrial and automotive environments.
FAQ
What is the exact reset threshold voltage of LM810M3-3.08/NOPB and how does it vary with temperature?
The LM810M3-3.08/NOPB has a factory-programmed reset threshold of 3.08 V with ±3% tolerance over –40°C to 105°C. At 25°C, the threshold is 3.04–3.11 V; at –40°C to 85°C, it is 3.00–3.15 V; and at 85°C to 105°C, it is 2.92–3.23 V. Its temperature coefficient is 30 ppm/°C, ensuring predictable drift across operating conditions. This specification applies directly to the LM810M3-3.08/NOPB and is validated per TI's SNVS052E datasheet.
Does LM810M3-3.08/NOPB support bidirectional microprocessor reset pins like those on the Motorola 68HC11?
Yes, the LM810M3-3.08/NOPB can interface with bidirectional µP reset pins using a 4.7 kΩ series resistor between its RESET output and the µP pin, as documented in Figure 9 of the SNVS052E datasheet. This prevents bus contention while maintaining valid reset assertion. The LM810M3-3.08/NOPB's active-high open-drain output is compatible with this configuration, and TI explicitly validates this usage for the LM810M3-3.08/NOPB.
What is the minimum VCC voltage at which LM810M3-3.08/NOPB guarantees valid RESET output behavior?
The LM810M3-3.08/NOPB ensures RESET output remains valid for VCC ≥1 V, as specified in Section 7.3.1.1 of the SNVS052E datasheet. Below 1 V, RESET may become indeterminate; TI recommends a pull-up resistor to VCC for continued validity. This 1 V lower limit is a guaranteed parameter for the LM810M3-3.08/NOPB and applies across its full temperature range.
How does the 240 ms reset timeout of LM810M3-3.08/NOPB behave across temperature and supply voltage?
The LM810M3-3.08/NOPB provides a typical reset timeout of 240 ms at 25°C, with a guaranteed minimum of 140 ms and maximum of 560 ms over –40°C to 85°C, and 100–840 ms over 85°C to 105°C. This variation is fully characterized and published in Table 6-5 of the SNVS052E datasheet. The timeout is independent of VCC within 1.0–5.5 V, and the LM810M3-3.08/NOPB's design ensures monotonic behavior across all conditions.
Is LM810M3-3.08/NOPB RoHS-compliant and what is its moisture sensitivity level?
Yes, the LM810M3-3.08/NOPB is RoHS-compliant (lead-free, Sn finish) and rated MSL Level-1 at 260°C peak reflow, meaning it is not moisture-sensitive and requires no dry-pack or bake conditioning prior to assembly. This information is confirmed in TI's official packaging addendum for LM810M3-3.08/NOPB and applies to both tape-and-reel variants (1000- and 3000-piece reels).
LM810M3-3.08/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:
- 3.08V
- 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
LM810M3-3.08/NOPB FAQ
1.How can I place an order for LM810M3-3.08/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM810M3-3.08/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 LM810M3-3.08/NOPB reliable?
The price and inventory of LM810M3-3.08/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM810M3-3.08/NOPB is usually 5 days.
3.What payment methods are accepted for LM810M3-3.08/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM810M3-3.08/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM810M3-3.08/NOPB?
LM810M3-3.08/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM810M3-3.08/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 LM810M3-3.08/NOPB?
For technical support, including LM810M3-3.08/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM810M3-3.08/NOPB requirements.
6.How does Aetrix verify that LM810M3-3.08/NOPB is sourced from the original manufacturer or authorized distributors?
All LM810M3-3.08/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 LM810M3-3.08/NOPB meets industry standards.
7.What is the process for return or replacement of LM810M3-3.08/NOPB?
All LM810M3-3.08/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM810M3-3.08/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 LM810M3-3.08/NOPB part is unused and in its original packaging.
Return procedure for LM810M3-3.08/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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