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MAX815LESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX815LESA

Manufacturer: MAXIM

+-1% accuracy, low-power, microprocessor supervisory circuit. Reset trip threshold (min) 4.65V (max) 4.75V, push-pull active-low reset output, manual reset, power-fail monitor, watchdog circuit.

Partnumber Manufacturer Quantity Availability
MAX815LESA MAXIM 43 In Stock

Description and Introduction

+-1% accuracy, low-power, microprocessor supervisory circuit. Reset trip threshold (min) 4.65V (max) 4.75V, push-pull active-low reset output, manual reset, power-fail monitor, watchdog circuit. The MAX815LESA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Type:** Microprocessor (μP) Supervisory Circuit  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Adjustable or fixed (factory-set)  
- **Reset Timeout Period:** Typically 200ms (adjustable)  
- **Watchdog Timer:** Yes (programmable)  
- **Manual Reset Input:** Available  
- **Power-Fail Comparator:** Yes (for early warning of power failure)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX815LESA is designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal if the supply voltage drops below a preset threshold. It includes a watchdog timer to detect software lockups and a manual reset input for user-initiated resets.  

### **Features:**
- **Voltage Monitoring:** Monitors VCC for undervoltage conditions.  
- **Adjustable Reset Threshold:** Allows customization for different voltage levels.  
- **Watchdog Timer:** Prevents system lockups by requiring periodic toggling.  
- **Manual Reset Input:** Enables external reset control.  
- **Power-Fail Comparator:** Provides early warning of impending power loss.  
- **Low Quiescent Current:** Minimizes power consumption.  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

+-1% accuracy, low-power, microprocessor supervisory circuit. Reset trip threshold (min) 4.65V (max) 4.75V, push-pull active-low reset output, manual reset, power-fail monitor, watchdog circuit.

Alternative Part Number

  • ADM708SARZ --: Pin-compatible microprocessor supervisory circuit with similar reset and watchdog functions, widely available and a common drop-in replacement for MAX815 supervisors.
  • TL7705ACDR --: Voltage supervisor with adjustable reset threshold and reset output, functionally similar to the MAX815 family and available in SOIC package.
  • MC33064D-5G --: Undervoltage sensing circuit providing reset output for microprocessor systems, a lower-cost alternative with comparable supervisory behavior.
  • TL7705ACD --: Classic voltage supervisor providing reset generation for microprocessor systems; functionally comparable and easy to source.

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