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MAX690TCSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX690TCSA

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 +-4%. Power-fail comparator. Reset window +-75mV

Partnumber Manufacturer Quantity Availability
MAX690TCSA MAXIM 16 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 +-4%. Power-fail comparator. Reset window +-75mV The MAX690TCSA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual details about the device:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Type:** Microprocessor Supervisory Circuit  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (typical)  
- **Reset Timeout Period:** Adjustable or fixed (depending on variant)  
- **Watchdog Timer:** Yes (with programmable timeout)  
- **Manual Reset Input:** Yes (active-low)  
- **Power-Fail Comparator:** Yes (for early warning of power failure)  
- **Operating Temperature Range:** -40°C to +85°C (industrial grade)  

### **Descriptions and Features:**  
- Monitors system voltage and generates a reset signal to the μP when voltage falls below a preset threshold.  
- Includes a watchdog timer to detect software lockups by requiring periodic toggling.  
- Features a power-fail comparator for early power-loss warning.  
- Manual reset input allows for user-initiated system reset.  
- Low quiescent current, making it suitable for battery-powered applications.  
- Available in an 8-pin SOIC package for compact designs.  

For exact datasheet details, refer to the official documentation from Maxim Integrated (Analog Devices).

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 +-4%. Power-fail comparator. Reset window +-75mV
Partnumber Manufacturer Quantity Availability
MAX690TCSA MAXIM 2 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 +-4%. Power-fail comparator. Reset window +-75mV The MAX690TCSA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (for 5V supply)  
- **Reset Timeout Period:** 200ms (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 12μA (typical)  

### **Descriptions:**  
The MAX690TCSA is designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal when the supply voltage falls below a preset threshold. It also includes watchdog timer functionality to detect software lockups.  

### **Features:**  
- **Voltage Monitoring:** Monitors VCC and generates a reset signal when voltage drops below the threshold.  
- **Manual Reset Input:** Allows for an external pushbutton reset.  
- **Watchdog Timer:** Prevents system lockups by requiring periodic toggling.  
- **Low Power Consumption:** 12μA typical quiescent current.  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  
- **Battery Backup Switching:** Automatically switches to backup battery when primary power fails.  
- **Power-Fail Comparator:** Provides early warning of power loss.  

The MAX690TCSA is commonly used in embedded systems, industrial controls, and battery-powered applications.  

(Note: For detailed electrical characteristics, refer to the official datasheet from Maxim Integrated.)

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 +-4%. Power-fail comparator. Reset window +-75mV

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