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MAX691AC from MAXIM,MAXIM - Dallas Semiconductor

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MAX691AC

Manufacturer: MAXIM

Microprocessor Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX691AC MAXIM 49 In Stock

Description and Introduction

Microprocessor Supervisory Circuits The **MAX691AC** is a microprocessor (µP) supervisory circuit manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Type:** µP Supervisory Circuit  
- **Supply Voltage (VCC):** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (for 5V operation)  
- **Reset Timeout Period:** Adjustable (typically 200ms)  
- **Watchdog Timer:** Yes (1.6s typical timeout)  
- **Manual Reset Input:** Yes (active-low)  
- **Battery Backup Switching:** Yes (supports battery backup for CMOS RAM)  
- **Operating Temperature Range:** 0°C to +70°C (commercial grade)  
- **Package:** 8-pin DIP, SOIC  

### **Descriptions:**
- Monitors **VCC** and generates a reset signal if voltage drops below a preset threshold.  
- Includes a **watchdog timer** to detect µP lockups.  
- Provides **battery backup switching** for CMOS RAM during power loss.  
- Features a **manual reset input** for external µP reset control.  

### **Features:**
- **Low Power Consumption:** Typically 50µA in normal operation.  
- **Precision Voltage Monitoring:** Ensures reliable µP reset.  
- **Battery Backup Switchover:** Seamless transition to backup power.  
- **Watchdog Timer:** Prevents system crashes due to µP lockups.  
- **Manual Reset Capability:** Allows external reset triggering.  

This information is strictly based on the manufacturer's datasheet and product documentation.

Application Scenarios & Design Considerations

Microprocessor Supervisory Circuits

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