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MAX821SUS from MAXIM,MAXIM - Dallas Semiconductor

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MAX821SUS

Manufacturer: MAXIM, MAX

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

Partnumber Manufacturer Quantity Availability
MAX821SUS MAXIM, MAX 4321 In Stock

Description and Introduction

4-Pin, µP Voltage Monitors with Pin-Selectable Power-On Reset Timeout Delay The MAX821SUS is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Type:** Microprocessor (μP) Supervisory Circuit  
- **Package:** SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.0V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5%  
- **Reset Timeout Period:** Adjustable or fixed (depending on variant)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** Typically 5μA  

### **Descriptions:**  
The MAX821SUS is a low-power supervisory circuit designed to monitor system power supplies in microprocessor-based applications. It ensures reliable operation by generating a reset signal when the supply voltage drops below a specified threshold. The device is suitable for battery-powered and low-voltage systems due to its wide operating range and low current consumption.  

### **Features:**  
- **Precision Voltage Monitoring:** Ensures accurate reset generation at a preset threshold.  
- **Low Quiescent Current:** Ideal for battery-operated applications.  
- **Wide Operating Voltage Range:** Supports 1.0V to 5.5V systems.  
- **Manual Reset Input:** Allows external reset triggering.  
- **Adjustable or Fixed Reset Timeout:** Configurable for different system requirements.  
- **Small Package (SOIC):** Space-efficient for compact designs.  

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

Application Scenarios & Design Considerations

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

Alternative Part Number

  • ADM809SARTZ --: Pin-compatible supervisory circuit with similar reset threshold and active-low reset, widely available and functionally equivalent.
  • TL7705ACP --: Classic voltage supervisor with adjustable threshold and reset output, suitable replacement for basic supply monitoring functions.
  • MCP130T-315I/TT --: Low-cost 3-pin voltage supervisor with active-low reset, adequate for simple reset generation in similar applications.
  • MCP130T-300I/TT --: Low-cost 3V supervisor with active-low reset, good functional match when exact threshold tolerance is not critical.

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