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MAX802TEPA from MAXIM,MAXIM - Dallas Semiconductor

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MAX802TEPA

Manufacturer: MAXIM

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 3.075V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-2%. Power-fail comparator. Reset window +-2%

Partnumber Manufacturer Quantity Availability
MAX802TEPA MAXIM 3400 In Stock

Description and Introduction

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 3.075V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-2%. Power-fail comparator. Reset window +-2% The MAX802TEPA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the specifications, descriptions, and features based on the available knowledge:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Type:** Microprocessor (μP) Supervisory Circuit  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Multiple factory-set options (e.g., 2.63V, 3.08V, 4.38V, etc.)  
- **Reset Timeout Period:** Adjustable or fixed (typically 140ms or 280ms, depending on variant)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Manual Reset Input:** Active-low (MR) for external reset initiation  
- **Watchdog Timer:** Includes a watchdog function with a 1.6s timeout (if applicable)  

### **Descriptions:**
- The MAX802TEPA monitors microprocessor power supply voltages and generates a reset signal if the voltage drops below a preset threshold.  
- It ensures proper system operation by holding the microprocessor in reset during power-up, power-down, or brownout conditions.  
- The device includes a manual reset input (MR) for external reset control.  
- Some variants may include a watchdog timer to detect software lockups.  

### **Features:**
- **Precision Voltage Monitoring:** Ensures reliable reset operation.  
- **Low Power Consumption:** Typically draws low quiescent current.  
- **Manual Reset Capability:** Allows for external system reset via the MR pin.  
- **Wide Operating Voltage Range:** Supports systems from 1.2V to 5.5V.  
- **Industrial Temperature Range:** Operates reliably from -40°C to +85°C.  
- **Fixed or Adjustable Reset Timeout:** Ensures proper system initialization.  

For exact threshold voltages and additional details, refer to the official Maxim Integrated datasheet.

Application Scenarios & Design Considerations

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 3.075V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-2%. Power-fail comparator. Reset window +-2%

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