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MAX821PUS from MAXIM,MAXIM - Dallas Semiconductor

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MAX821PUS

Manufacturer: MAXIM

4-Pin, µP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay

Partnumber Manufacturer Quantity Availability
MAX821PUS MAXIM 2500 In Stock

Description and Introduction

4-Pin, µP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay The MAX821PUS is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Package:** SOIC-8  
- **Type:** Microprocessor Supervisor  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Factory-Set or Adjustable  
- **Reset Timeout Period:** 140ms (Typical)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX821PUS is a low-power microprocessor supervisory circuit designed to monitor system power supplies and provide a reset signal to the μP during power-up, power-down, or brownout conditions. It ensures proper system operation by holding the μP in reset until the supply voltage stabilizes.

### **Features:**
- **Low Quiescent Current:** Typically 5μA  
- **Manual Reset Input:** Allows external pushbutton reset  
- **Guaranteed Reset Valid Down to VCC = 1V**  
- **No External Components Required** (for fixed threshold versions)  
- **Power-On Reset Generation**  
- **Watchdog Timer Functionality** (in some variants)  
- **Available in 8-Pin SOIC Package**  

This device is commonly used in embedded systems, industrial controls, and battery-powered applications where reliable power monitoring is critical.

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