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STM1817SWX7F from ST,ST Microelectronics

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STM1817SWX7F

Manufacturer: ST

Low Power Reset Circuit

Partnumber Manufacturer Quantity Availability
STM1817SWX7F ST 400 In Stock

Description and Introduction

Low Power Reset Circuit The STM1817SWX7F is a microprocessor reset circuit manufactured by STMicroelectronics. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** STMicroelectronics  
- **Type:** Voltage Monitor / Reset Circuit  
- **Package:** SOT-23-5  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (typical)  
- **Reset Timeout Period:** 140ms (minimum)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 4µA (typical)  

### **Descriptions:**
- The STM1817SWX7F is a low-power voltage supervisor designed to monitor system voltages in microprocessors and digital systems.  
- It asserts a reset signal when the supply voltage drops below a preset threshold, ensuring proper system initialization.  
- The device features an open-drain output, making it compatible with multiple logic levels.  

### **Features:**
- **Wide Operating Voltage Range (1.2V to 5.5V)** – Suitable for various low-voltage applications.  
- **Low Quiescent Current (4µA typical)** – Ideal for battery-powered systems.  
- **Precision Voltage Monitoring (±1.5% threshold accuracy)** – Ensures reliable reset operation.  
- **Open-Drain Reset Output** – Compatible with different logic levels.  
- **Small SOT-23-5 Package** – Space-efficient for compact designs.  
- **Industrial Temperature Range (-40°C to +85°C)** – Suitable for harsh environments.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Low Power Reset Circuit

Alternative Part Number

  • MAX809SEUR+T --: Pin-compatible 3-pin SOT-23 reset supervisor with similar active-low reset and threshold, widely available and a common drop-in for STM1817 series.
  • APX803S-31SA-7 --: Low-cost 3-pin SOT-23 voltage supervisor with comparable reset threshold and open-drain/active-low output, suitable functional replacement.
  • MCP131T-315E/TT --: 3-pin SOT-23 reset supervisor with similar threshold and active-low reset output, offering a different series and good availability as an alternative.

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