LM809M3-3.08/NOPBIn StockTexas Instruments
LM809M3-3.08/NOPB is a 3-pin microprocessor reset circuit with 3.08V threshold voltage by Texas Instruments. Key specs: active-low open-drain reset output, 140ms minimum reset timeout, SOT-23 package. From $0.375, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- LM809M3-3.08/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3750(MOQ 1)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3.08V precision reset threshold with ±2.5% accuracy for reliable microprocessor supervision
- Active-low open-drain RESET output compatible with 3.3V and 5V logic systems
- 140ms minimum reset pulse width ensures complete microcontroller initialization
- Ultra-low quiescent current (25µA typical) ideal for battery-powered applications
- Tiny SOT-23 (SC-70) package saves board space in compact embedded designs
Applications
The LM809M3-3.08/NOPB is widely used in microprocessor and microcontroller-based systems to ensure reliable power-on reset and brownout detection. It is suited for consumer electronics, industrial control boards, and battery-powered IoT devices where stable supply voltage monitoring is critical. The precision 3.08V threshold and open-drain output make it a straightforward drop-in supervisor for 3.3V systems requiring guaranteed reset behavior during power transitions.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| 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 |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.1mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +3.08V |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM809M3-3.08/NOPB:
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +4.63V, CMOS, PDSO3
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +2.93V, CMOS, PDSO3
Frequently Asked Questions
What is the reset threshold voltage of the LM809M3-3.08/NOPB?
The LM809M3-3.08/NOPB has a factory-trimmed reset threshold of 3.08V with ±2.5% accuracy. When the supply voltage falls below this threshold, the active-low RESET output is asserted, holding the microprocessor in reset until the supply recovers and the 140ms timeout expires.
What package does the LM809M3-3.08/NOPB come in?
The LM809M3-3.08/NOPB is available in a 3-pin SOT-23 (also known as SC-70) surface-mount package. This compact footprint measures approximately 3mm × 1.7mm, making it ideal for space-constrained PCB designs in portable and embedded applications.
What is the reset timeout period of the LM809M3-3.08/NOPB?
The LM809M3-3.08/NOPB provides a minimum reset timeout of 140ms after the supply voltage rises above the 3.08V threshold. This delay ensures the power supply is fully stable and allows the microprocessor sufficient time to complete its internal initialization before normal operation begins.
Is the LM809M3-3.08/NOPB suitable for 3.3V microcontroller systems?
Yes, the LM809M3-3.08/NOPB is specifically designed for 3.3V microcontroller and microprocessor systems. Its 3.08V threshold detects brownout conditions below the nominal 3.3V rail, and the open-drain active-low RESET output is fully compatible with 3.3V and 5V logic interfaces.
What are common applications for the LM809M3-3.08/NOPB?
The LM809M3-3.08/NOPB is commonly used in embedded systems, IoT sensor nodes, industrial controllers, and consumer electronics where reliable microprocessor reset supervision is required. It is particularly effective in battery-operated designs due to its low 25µA quiescent current and compact SOT-23 package.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7500 | $0.75 |
| 10+ | $0.7300 | $7.30 |
| 25+ | $0.6584 | $16.46 |
| 34+ | $0.4500 | $15.30 |
| 134+ | $0.3750 | $50.25 |
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