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MAX814TESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX814TESA

Manufacturer: MAXIM

+-1% accuracy, low-power, microprocessor supervisory circuit. Reset trip threshold (min) 3.00V (max) 3.06V, push-pull active-low reset output, push-pull active-high reset output, manual reset, power-fail monitor, low-line detector.

Partnumber Manufacturer Quantity Availability
MAX814TESA MAXIM 127 In Stock

Description and Introduction

+-1% accuracy, low-power, microprocessor supervisory circuit. Reset trip threshold (min) 3.00V (max) 3.06V, push-pull active-low reset output, push-pull active-high reset output, manual reset, power-fail monitor, low-line detector. The MAX814TESA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX814TESA  
- **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 with external capacitor)  
- **Watchdog Timer:** Yes (1.6s nominal timeout)  
- **Manual Reset Input:** Active-low (MR)  
- **Power-On Reset (POR):** Yes  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX814TESA is a low-power 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 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:** Detects system lockups and triggers a reset if not toggled within the timeout period.  
- **Manual Reset Input:** Enables external push-button reset functionality.  
- **Low Quiescent Current:** Typically 50μA, making it suitable for battery-powered applications.  
- **Power-On Reset Delay:** Ensures stable power before releasing reset.  
- **Space-Saving Package:** 8-pin SOIC for compact PCB designs.  

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

Application Scenarios & Design Considerations

+-1% accuracy, low-power, microprocessor supervisory circuit. Reset trip threshold (min) 3.00V (max) 3.06V, push-pull active-low reset output, push-pull active-high reset output, manual reset, power-fail monitor, low-line detector.

Alternative Part Number

  • ADM809TARTZ-REEL --: Supervisory circuit with similar reset threshold and active-low reset output; widely available and pin-compatible in function.
  • TL7705ACDR --: Voltage supervisor with adjustable threshold and reset output, suitable replacement for supply monitoring applications.
  • MC33064D-5G --: 5V undervoltage sensing circuit with reset output, low cost and commonly used as a supervisory alternative.
  • TPS3808G33DBVR --: Adjustable-threshold supervisor with programmable delay, low quiescent current, and SOT-23 package suitable as a functional replacement.
  • MCP131T-315E/TO --: Voltage supervisor with 3.15V threshold and active-low reset, offering comparable monitoring function in a small package.

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