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MAX708ESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX708ESA

Manufacturer: MAXIM, MAX

Low-Cost, uP Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX708ESA MAXIM, MAX 15630 In Stock

Description and Introduction

Low-Cost, uP Supervisory Circuits The MAX708ESA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Package:** 8-SOIC (Small Outline Integrated Circuit)  
- **Type:** Microprocessor Voltage Monitor/Supervisor  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (for 5V supply)  
- **Reset Timeout Period:** Adjustable (typically 200ms)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Manual Reset Input:** Yes (active-low)  
- **Watchdog Timer:** Yes (1.6s typical timeout)  
- **Power-On Reset (POR) Delay:** Internally fixed  

### **Descriptions:**  
The MAX708ESA is designed to monitor power supply voltages in microprocessor and digital systems. It ensures proper system operation by generating a reset signal when 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 system resets.  

### **Features:**  
- **Precision Voltage Monitoring:** Monitors 5V, 3.3V, or adjustable voltage rails.  
- **Reset Output:** Active-low or active-high reset signal options.  
- **Watchdog Timer:** Detects system malfunctions by requiring periodic toggling.  
- **Manual Reset Input:** Allows for external push-button reset.  
- **Low Power Consumption:** Typically 50μA supply current.  
- **Space-Saving Package:** 8-pin SOIC for compact designs.  
- **Wide Operating Voltage:** Supports 1.2V to 5.5V for versatile applications.  

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

Application Scenarios & Design Considerations

Low-Cost, uP Supervisory Circuits

Alternative Part Number

  • ADM708ARZ --: Pin-compatible microprocessor supervisor with reset and watchdog functions, widely available and functionally equivalent to the MAX708.
  • TL7705ACP --: Classic 5V supply voltage supervisor with reset output, similar function and commonly used as a drop-in alternative in supervisor circuits.
  • MC33064P-5 --: 5V undervoltage sensing circuit with reset output, suitable replacement for basic reset/supervisor functions in many designs.
  • MC34064P-5 --: Low-cost 5V undervoltage sensing circuit providing reset output, suitable for less critical applications where exact timing is not required.

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