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LM809M3-2.45 from NS国半,National Semiconductor

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LM809M3-2.45

Manufacturer: NS国半

3-Pin Microprocessor Reset Circuits

Partnumber Manufacturer Quantity Availability
LM809M3-2.45,LM809M3245 NS国半 21500 In Stock

Description and Introduction

3-Pin Microprocessor Reset Circuits The LM809M3-2.45 is a microprocessor reset circuit manufactured by National Semiconductor (NS国半).  

### **Specifications:**  
- **Output Type:** Active-Low  
- **Reset Threshold Voltage:** 2.45V  
- **Operating Voltage Range:** 1V to 5V  
- **Reset Timeout Period:** 140ms (min), 280ms (typ)  
- **Package:** SOT-23-3  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 8µA (typ)  

### **Descriptions:**  
- Monitors system voltage and asserts a reset signal when VCC falls below the threshold (2.45V).  
- Ensures proper microprocessor initialization during power-up, power-down, or brownout conditions.  
- Available in a small SOT-23-3 package for space-constrained applications.  

### **Features:**  
- Precision voltage monitoring with a fixed threshold.  
- Low power consumption.  
- No external components required.  
- Guaranteed reset output valid down to VCC = 1V.  
- Immune to short VCC transients.  

(Data sourced from National Semiconductor’s official documentation.)

Partnumber Manufacturer Quantity Availability
LM809M3-2.45,LM809M3245 NS 10 In Stock

Description and Introduction

3-Pin Microprocessor Reset Circuits The LM809M3-2.45 is a microprocessor reset circuit manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Type:** Voltage Monitor (Reset IC)  
- **Reset Threshold Voltage:** 2.45V  
- **Operating Voltage Range:** 1V to 5V  
- **Output Type:** Active-Low Reset  
- **Reset Timeout Period:** 140ms (typical)  
- **Package:** SOT-23-3  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 7µA (typical)  

### **Descriptions:**  
The LM809M3-2.45 is designed to monitor system voltage and provide a reset signal to microprocessors or digital systems when the supply voltage falls below the 2.45V threshold. It ensures proper system initialization during power-up, power-down, or brownout conditions.  

### **Features:**  
- Precision voltage monitoring  
- Low power consumption  
- Guaranteed reset output down to Vcc = 1V  
- No external components required  
- Small SOT-23-3 package for space-constrained applications  
- Immune to short voltage transients  

This device is commonly used in embedded systems, microcontrollers, and other digital circuits requiring reliable power-on reset functionality.

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