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MAX690SESA from ST,ST Microelectronics

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MAX690SESA

Manufacturer: ST

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV

Partnumber Manufacturer Quantity Availability
MAX690SESA ST 4200 In Stock

Description and Introduction

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV The MAX690SESA is a microprocessor (μP) supervisory circuit manufactured by STMicroelectronics (ST). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Supply Voltage (VCC):** 1.2V to 5.5V  
- **Reset Threshold Voltage:** Adjustable or fixed (depending on variant)  
- **Reset Timeout Period:** Typically 200ms (adjustable in some models)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Quiescent Current:** Low (typically a few µA)  

### **Descriptions:**  
The MAX690SESA is designed to monitor the power supply of microprocessors and digital systems. It ensures proper system operation by generating a reset signal when the voltage falls below a specified threshold, preventing erratic behavior during power-up, power-down, or brownout conditions.  

### **Features:**  
- **Power-On Reset (POR):** Ensures a valid reset signal during power-up.  
- **Manual Reset Input:** Allows external push-button reset control.  
- **Low Power Consumption:** Suitable for battery-powered applications.  
- **Watchdog Timer (if applicable):** Monitors system activity and resets the μP if software fails.  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  
- **Hysteresis in Voltage Monitoring:** Prevents reset signal oscillation near the threshold.  

For exact details, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV
Partnumber Manufacturer Quantity Availability
MAX690SESA MAXIM 100 In Stock

Description and Introduction

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV The **MAX690SESA** is a microprocessor (μP) supervisory circuit manufactured by **MAXIM** (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** MAXIM (now Analog Devices)  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Voltage:** Adjustable or fixed (specific value depends on variant)  
- **Reset Timeout Period:** Typically 200ms (adjustable in some versions)  
- **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  

### **Descriptions:**  
The **MAX690SESA** is a μP supervisory circuit designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal during power-up, power-down, or brownout conditions. It includes a watchdog timer to detect software lockups and a power-fail comparator for early warning of voltage drops.  

### **Features:**  
- **Voltage Monitoring:** Monitors VCC for undervoltage conditions.  
- **Reset Output:** Active-low RESET signal for μP initialization.  
- **Watchdog Timer:** Prevents system lockup by requiring periodic toggling.  
- **Manual Reset Input:** Allows external pushbutton reset.  
- **Power-Fail Comparator:** Provides early warning of impending power loss.  
- **Low Quiescent Current:** Typically 50μA (minimizes power consumption).  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  

This information is based solely on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics and application circuits, refer to the official datasheet.

Application Scenarios & Design Considerations

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV
Partnumber Manufacturer Quantity Availability
MAX690SESA MAXIM 80 In Stock

Description and Introduction

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV The **MAX690SESA** is a microprocessor (μP) supervisory circuit manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **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% (typical)  
- **Reset Timeout Period:** Adjustable (typically 200ms)  
- **Watchdog Timer:** Yes (1.6s nominal timeout)  
- **Manual Reset Input:** Yes (active-low)  
- **Power-Fail Comparator:** Yes (for early warning of power loss)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The **MAX690SESA** 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 includes a watchdog timer, manual reset input, and power-fail comparator for enhanced system reliability.  

### **Features:**  
- **Voltage Monitoring:** Monitors VCC for undervoltage conditions.  
- **Reset Output:** Active-low reset signal with adjustable timeout.  
- **Watchdog Timer:** Prevents system lockup by requiring periodic toggling.  
- **Manual Reset Input:** Allows external reset triggering.  
- **Power-Fail Comparator:** Provides early warning of impending power loss.  
- **Low Quiescent Current:** Typically 50µA (minimizes power consumption).  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

3.0V or 3.3V microprocessor supervisory circuit. Reset threshold 2.925V. Active-low reset. Watchdog input. Backup-battery switch. Power-fail threshold accuracy +-4%. Power-fail comparator. Reset window +-75mV

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