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MAX708CPA from MAX,MAXIM - Dallas Semiconductor

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MAX708CPA

Manufacturer: MAX, MAXIM, MAXIM

Low-Cost, uP Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX708CPA MAX, MAXIM, MAXIM 36088 In Stock

Description and Introduction

Low-Cost, uP Supervisory Circuits The **MAX708CPA** 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 (Analog Devices)  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Factory-set (e.g., 4.40V, 4.65V, or adjustable)  
- **Reset Timeout Period:** 200ms (typical)  
- **Operating Temperature Range:** **0°C to +70°C** (Commercial grade)  
- **Manual Reset Input:** Active-low (**MR**) with internal pull-up  
- **Power-On Reset (POR) Delay:** Guaranteed valid reset upon power-up  
- **Watchdog Timer:** 1.6s timeout (if enabled)  

### **Descriptions:**
- Monitors **VCC** for µP systems and generates a **reset signal** if voltage drops below a preset threshold.  
- Ensures proper system initialization during power-up, power-down, or brownout conditions.  
- Includes a **manual reset input** for external reset triggering.  
- Optional **watchdog timer** monitors µP activity; resets the system if software fails to toggle the watchdog input.  

### **Features:**
- **Low Power Consumption:** Typically **35µA** supply current.  
- **Precision Voltage Monitoring:** Ensures reliable µP operation.  
- **Debounced Manual Reset Input:** Prevents false triggers.  
- **No External Components Required:** Minimal design complexity.  
- **Guaranteed Reset Valid Down to VCC = 1V:** Ensures robust operation.  

The **MAX708CPA** is commonly used in embedded systems, industrial controls, and automotive applications requiring reliable power supervision.  

*(Note: For exact threshold voltages, refer to the datasheet based on the specific variant.)*

Application Scenarios & Design Considerations

Low-Cost, uP Supervisory Circuits

Alternative Part Number

  • ADM708AN --: Pin-compatible microprocessor supervisory circuit with reset output, direct functional equivalent to MAX708 in DIP-8 package.
  • TL7705ACP --: Widely available supply voltage supervisor with reset and watchdog functions, suitable replacement for MAX708 in most supervisory applications.
  • MC34064P --: Undervoltage sensing circuit providing reset output, commonly used as a substitute for MAX708-type supervisors in DIP packages.
  • MC34064P-5 --: Low-cost 5V undervoltage sensing circuit providing reset output, commonly used as a substitute for MAX708-type supervisors in DIP packages.

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