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MAX821LUS-T from MAXIM,MAXIM - Dallas Semiconductor

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MAX821LUS-T

Manufacturer: MAXIM

4-Pin レP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay

Partnumber Manufacturer Quantity Availability
MAX821LUS-T,MAX821LUST MAXIM 111 In Stock

Description and Introduction

4-Pin レP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay The MAX821LUS-T is a microprocessor voltage monitor manufactured by Maxim Integrated.  

### **Specifications:**  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Quiescent Current:** 6µA (typical)  
- **Output Type:** Push-Pull Active-Low RESET  
- **Reset Threshold Accuracy:** ±1.5% (over temperature)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOT-23-3  

### **Descriptions:**  
The MAX821LUS-T is a low-power voltage monitor designed to provide a reset signal to microprocessors or other digital systems when the supply voltage drops below a preset threshold. It ensures proper system operation during power-up, power-down, and brownout conditions.  

### **Features:**  
- **Low Power Consumption:** 6µA typical supply current  
- **Precision Voltage Monitoring:** ±1.5% threshold accuracy  
- **Wide Operating Voltage Range:** 1.2V to 5.5V  
- **No External Components Required:** Simplifies design  
- **Small Form Factor:** Available in a SOT-23-3 package  
- **Guaranteed Reset Valid Down to VCC = 1V**  

This device is commonly used in battery-powered applications, embedded systems, and portable electronics where reliable voltage monitoring is critical.

Application Scenarios & Design Considerations

4-Pin レP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay

Alternative Part Number

  • ADM811LARTZ-REEL --: Pin-compatible microprocessor supervisory circuit with similar reset threshold and active-low reset output; widely available and from the same lineage as Maxim.
  • TPS3808G01DBVR --: Adjustable-threshold supervisor in SOT-23 with low quiescent current, suitable functional replacement for supply monitoring and reset generation.
  • MCP131T-300E/TO --: Low-cost voltage supervisor with 3.0V threshold and active-low reset, offering a simple drop-in style alternative for reset monitoring applications.

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