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MAX690RCSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX690RCSA

Manufacturer: MAXIM

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.625V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV

Partnumber Manufacturer Quantity Availability
MAX690RCSA MAXIM 9 In Stock

Description and Introduction

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.625V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV The MAX690RCSA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated.  

### **Specifications:**  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Adjustable or fixed (4.65V, 4.40V, 3.08V, 2.93V, 2.63V, 2.32V)  
- **Reset Timeout Period:** 200ms (min)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (RCSA)  
- **Low Quiescent Current:** 12μA (typical)  
- **Manual Reset Input:** Yes (active-low)  
- **Watchdog Timer:** Yes (1.6s timeout)  
- **Battery Backup Switchover:** Yes  

### **Descriptions and Features:**  
- Monitors μP power supply to prevent incorrect operation during power-up, power-down, or brownout conditions.  
- Provides a reset signal to the μP if VCC drops below the threshold.  
- Includes a watchdog timer to detect software lockups.  
- Manual reset input allows external pushbutton reset control.  
- Battery backup switchover for maintaining power to critical circuits during main power failure.  
- Low power consumption extends battery life in portable applications.  
- Space-saving 8-pin SOIC package.  

This device is commonly used in embedded systems, industrial controls, and battery-powered applications.

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