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MAX791CSE+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX791CSE+T

Manufacturer: MAXIM

Microprocessor Supervisory Circuit

Partnumber Manufacturer Quantity Availability
MAX791CSE+T,MAX791CSET MAXIM 12 In Stock

Description and Introduction

Microprocessor Supervisory Circuit The **MAX791CSE+T** is a microprocessor (μP) supervisory circuit manufactured by **MAXIM** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** MAXIM (Analog Devices)  
- **Package:** 16-SOIC (150 mil)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (over temperature)  
- **Reset Timeout Period:** Adjustable (200ms typical)  
- **Watchdog Timer:** Programmable (1.6s nominal timeout)  
- **Backup Battery Switchover:** Built-in (supports battery backup)  
- **Supply Current:** 40μA (typical)  
- **Operating Temperature Range:** 0°C to +70°C  

### **Descriptions:**
The MAX791CSE+T is a comprehensive μP supervisory circuit designed to monitor power supply voltages, provide reset signals, and ensure system reliability. It integrates multiple functions, including a watchdog timer, backup battery switchover, and power-fail comparator, making it suitable for critical microprocessor-based systems.

### **Features:**
- **Power Supply Monitoring:** Monitors VCC for undervoltage conditions.  
- **Manual Reset Input:** Allows external reset triggering.  
- **Watchdog Timer:** Prevents system lockup by resetting the μP if not serviced.  
- **Backup Battery Switchover:** Automatically switches to a backup battery during power loss.  
- **Power-Fail Comparator:** Early warning for impending power failure.  
- **Low Quiescent Current:** Minimizes power consumption in standby mode.  
- **Adjustable Reset Timeout:** Configurable via an external capacitor.  

For detailed electrical characteristics and application circuits, refer to the official **MAX791 datasheet** from Analog Devices (formerly MAXIM).

Application Scenarios & Design Considerations

Microprocessor Supervisory Circuit

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