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MAX709SCSA from MAX,MAXIM - Dallas Semiconductor

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MAX709SCSA

Manufacturer: MAX, MAXIM, MAXIM

Power-Supply Monitor with Reset
Partnumber Manufacturer Quantity Availability
MAX709SCSA MAX, MAXIM, MAXIM 975 In Stock

Description and Introduction

Power-Supply Monitor with Reset The MAX709SCSA 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 from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Part Number:** MAX709SCSA  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:**  
  - 4.63V (MAX709SCSA)  
  - Adjustable via external resistors (for other variants)  
- **Reset Timeout Period:** 140ms (minimum)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Quiescent Current:** 35µA (typical)  
- **Output Type:** Active-low reset (open-drain or push-pull, depending on variant)  

### **Descriptions:**
- The MAX709SCSA is a µP supervisory circuit designed to monitor system voltage and provide a reset signal to the microprocessor if the supply voltage falls below a preset threshold.  
- It ensures reliable system operation by preventing erratic behavior during power-up, power-down, or brownout conditions.  
- The device features a manual reset input for external system control.  

### **Features:**
- **Precision Voltage Monitoring:** Guarantees accurate reset assertion at the specified threshold.  
- **Low Power Consumption:** 35µA typical supply current for energy efficiency.  
- **Manual Reset Input:** Allows for external reset triggering.  
- **140ms Reset Pulse Width:** Ensures proper µP initialization.  
- **Wide Supply Voltage Range:** Operates from 1.2V to 5.5V, making it suitable for various µP systems.  
- **Compact 8-Pin SOIC Package:** Space-saving design for PCB integration.  

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

  • ADM809SARTZ --: Pin-compatible microprocessor supervisor with similar reset threshold and active-low reset, widely used as a MAX709 replacement.
  • TPS3808G01DBVR --: Adjustable-threshold supervisor in SOT-23 with low quiescent current, suitable functional substitute for supply monitoring.
  • MCP131T-300E/TO --: Low-cost 3.0V reset supervisor with active-low output, offering comparable reset timing in a small package.
  • MCP130-475DI/TO --: Voltage supervisor with comparable 4.75V trip point and open-drain reset, suitable drop-in functional replacement.
  • TL7705ACDR --: Classic supply voltage supervisor with adjustable threshold and reset output, commonly used as an alternative to MAX709.
  • ADM809SAKSZ --: Supervisor IC with similar reset threshold and active-low reset, pin-compatible in many designs and widely available.
  • TL7705ACD --: Voltage supervisor with adjustable threshold and reset output, suitable replacement for supply monitoring functions.
  • MC33064D-5 --: 5V undervoltage sensing circuit with reset output, functionally similar and commonly used as a substitute.

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