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MAX817LCSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX817LCSA

Manufacturer: MAXIM

+5V microprocessor supervisory circuit. Reset threshold 4.65V, active-low reset, backup-battery switchover, power-fail comparator, watchdog input, battery freshness seal.

Partnumber Manufacturer Quantity Availability
MAX817LCSA MAXIM 5 In Stock

Description and Introduction

+5V microprocessor supervisory circuit. Reset threshold 4.65V, active-low reset, backup-battery switchover, power-fail comparator, watchdog input, battery freshness seal. The MAX817LCSA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX817LCSA  
- **Package:** 8-pin SOIC (CSA denotes the package type)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Factory-set (e.g., 4.63V, 4.38V, 3.08V, 2.93V, 2.63V, 2.32V, etc.)  
- **Reset Timeout Period:** 140ms (minimum)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 6μA (typical)  

### **Descriptions:**  
- The MAX817LCSA monitors system voltage and provides a reset signal to the microprocessor if the supply voltage drops below a preset threshold.  
- It ensures proper system operation by holding the microprocessor in reset during power-up, power-down, or brownout conditions.  
- The reset output remains asserted for a fixed delay after the supply voltage rises above the threshold.  

### **Features:**  
- **Low Power Consumption:** 6μA typical supply current.  
- **Precision Voltage Monitoring:** Accurate threshold detection.  
- **Manual Reset Input:** Allows external reset triggering.  
- **Guaranteed Reset Output Valid to VCC = 1V:** Ensures reliable operation even at low voltages.  
- **No External Components Required:** Simplifies circuit design.  
- **Space-Saving Package:** 8-pin SOIC for compact designs.  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

+5V microprocessor supervisory circuit. Reset threshold 4.65V, active-low reset, backup-battery switchover, power-fail comparator, watchdog input, battery freshness seal.
Partnumber Manufacturer Quantity Availability
MAX817LCSA MAXIM 34 In Stock

Description and Introduction

+5V microprocessor supervisory circuit. Reset threshold 4.65V, active-low reset, backup-battery switchover, power-fail comparator, watchdog input, battery freshness seal. The MAX817LCSA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX817LCSA  
- **Package:** 8-Pin SOIC  
- **Type:** Microprocessor (μP) Supervisory Circuit  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Adjustable or Fixed (1.575V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V)  
- **Reset Timeout Period:** 140ms (min), 280ms (typ)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Quiescent Current:** 9μA (typ)  
- **Watchdog Timer:** Yes, 1.6s (typ) timeout  
- **Manual Reset Input:** Yes  
- **Power-On Reset (POR):** Yes  

### **Descriptions:**
The MAX817LCSA is a low-power microprocessor supervisory circuit designed to monitor system power supply voltages and provide a reset signal to the μP during power-up, power-down, or brownout conditions. It includes a watchdog timer, manual reset input, and an adjustable or fixed-voltage reset threshold for flexibility in system design.

### **Features:**
- **Precision Voltage Monitoring:** Ensures reliable reset operation.  
- **Low Quiescent Current:** 9μA (typ) for power efficiency.  
- **Adjustable or Fixed Reset Thresholds:** Supports multiple voltage levels.  
- **Integrated Watchdog Timer:** Monitors μP activity and triggers reset if stalled.  
- **Manual Reset Input:** Allows external reset control.  
- **Power-On Reset (POR):** Guarantees valid reset signal at power-up.  
- **Wide Operating Voltage Range (1.2V to 5.5V):** Suitable for various applications.  
- **Small 8-Pin SOIC Package:** Space-saving design.  

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

Application Scenarios & Design Considerations

+5V microprocessor supervisory circuit. Reset threshold 4.65V, active-low reset, backup-battery switchover, power-fail comparator, watchdog input, battery freshness seal.

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