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MAX813LESA from MAX,MAXIM - Dallas Semiconductor

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MAX813LESA

Manufacturer: MAX, MAXIM, MAXIM, MAXI

Low-Cost / uP Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX813LESA MAX, MAXIM, MAXIM, MAXI 37350 In Stock

Description and Introduction

Low-Cost / uP Supervisory Circuits The MAX813LESA is a microprocessor supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX813LESA  
- **Type:** Microprocessor Supervisor/Monitor IC  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Voltage Options:** Adjustable or fixed (e.g., 4.65V for 5V systems)  
- **Reset Timeout Period:** Typically 200ms (adjustable with external capacitor)  
- **Watchdog Timer:** 1.6s nominal timeout (adjustable)  
- **Manual Reset Input:** Active-low (MR)  
- **Power-Fail Comparator:** Monitors an auxiliary voltage  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX813LESA is 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 manual reset input for user-initiated resets.  

### **Features:**  
- **Power Supply Monitoring:** Automatically resets the microprocessor during power anomalies.  
- **Watchdog Timer:** Detects software crashes by requiring periodic toggling.  
- **Manual Reset Input:** Allows external push-button reset.  
- **Power-Fail Comparator:** Provides early warning of voltage failure.  
- **Low Power Consumption:** Suitable for battery-powered applications.  
- **Wide Operating Voltage Range:** Supports systems from 1.2V to 5.5V.  
- **Industrial Temperature Range:** Reliable performance in harsh environments.  

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

Application Scenarios & Design Considerations

Low-Cost / uP Supervisory Circuits

Alternative Part Number

  • ADM813LARZ --: Pin-compatible microprocessor supervisory circuit with reset and watchdog functions, direct functional equivalent to the MAX813L.
  • TPS3813K33DBVR --: Supervisory circuit with watchdog and manual reset in a small package, suitable replacement for supply monitoring applications.
  • MC33064D-5G --: Undervoltage sensing circuit with reset output, commonly used as a lower-cost alternative for reset supervisory functions.
  • CAT813LVI-GT3 --: Direct functional equivalent supervisory IC with 4.65V reset threshold and watchdog timer, widely available and pin-compatible in SOIC-8.
  • STM813LM6E --: Low-cost supervisory circuit offering the same reset threshold and watchdog functionality, suitable drop-in replacement in most designs.
  • TL7705ACD --: Widely used supply-voltage supervisor with reset output in SOIC-8; a common cross for MAX813-type supervisory circuits when watchdog is not required.
  • MC33064D-5 --: 5V undervoltage sensing circuit with reset output in SOIC-8; a low-cost alternative for basic reset/supervisory functions.
  • TPS3813L30DBVR --: Supervisory circuit with reset and watchdog timer in a small package, suitable replacement for supply monitoring applications.

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