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MAX709LCSA from MAX,MAXIM - Dallas Semiconductor

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MAX709LCSA

Manufacturer: MAX, MAXIM, MAXIN, MAXIM

Power-Supply Monitor with Reset

Partnumber Manufacturer Quantity Availability
MAX709LCSA MAX, MAXIM, MAXIN, MAXIM 1309 In Stock

Description and Introduction

Power-Supply Monitor with Reset The MAX709LCSA 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:** MAX709LCSA  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Type:** Microprocessor Voltage Monitor/Supervisory Circuit  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Factory-set (e.g., 4.65V, 4.40V, 3.08V, 2.93V, 2.63V, 2.32V, etc.)  
- **Reset Timeout Period:** 140ms (minimum)  
- **Operating Temperature Range:** 0°C to +70°C (Commercial grade)  
- **Quiescent Current:** 35μA (typical)  

### **Descriptions:**  
The MAX709LCSA is a low-power microprocessor supervisory circuit designed to monitor system voltages and provide a reset signal to the μP during power-up, power-down, or brownout conditions. It ensures proper system operation by holding the μP in reset until the supply voltage stabilizes.  

### **Features:**  
- **Precision Voltage Monitoring:** Ensures reliable reset assertion at factory-set threshold voltages.  
- **Manual Reset Input:** Allows external pushbutton reset control.  
- **Low Power Consumption:** 35μA typical supply current.  
- **Guaranteed Reset Valid Down to VCC = 1V:** Ensures reset signal integrity even at low voltages.  
- **No External Components Required:** Simplifies circuit design.  
- **140ms (min) Reset Pulse Width:** Provides sufficient time for system stabilization.  
- **Space-Saving 8-Pin SOIC Package:** Suitable for compact designs.  

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

Application Scenarios & Design Considerations

Power-Supply Monitor with Reset

Alternative Part Number

  • ADM809LARTZ-REEL --: Pin-compatible microprocessor supervisor with active-low reset and similar threshold, widely available and a common drop-in replacement.
  • MCP130-475DI/TO --: Low-cost voltage supervisor with comparable reset threshold and open-drain output, suitable for similar monitoring applications.
  • TL7705ACD --: Classic supply voltage supervisor with adjustable threshold and reset output, functionally similar and easily sourced.
  • MCP130-450DI/TO --: Low-cost voltage supervisor with active-low reset output and comparable threshold, suitable drop-in for reset monitoring applications.
  • TL7705ACDR --: Classic supply voltage supervisor with adjustable threshold and reset output, functionally similar and easy to adapt to the MAX709L application.
  • ADM809LARTZ --: Pin-compatible microprocessor supervisor with active-low reset and similar threshold, direct functional replacement.
  • TPS3808G30 --: Low-power voltage supervisor with adjustable delay and active-low reset, suitable substitute for supply monitoring.
  • MCP131T-300E --: 3.0V reset supervisor in small package with active-low output, good alternative for reset circuit applications.

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