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MAX793CSE from MAXIM,MAXIM - Dallas Semiconductor

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MAX793CSE

Manufacturer: MAXIM, MAX

3.0V/3.3V Adjustable Microprocessor Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX793CSE MAXIM, MAX 4002 In Stock

Description and Introduction

3.0V/3.3V Adjustable Microprocessor Supervisory Circuits The MAX793CSE is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the factual details about its specifications, descriptions, and features:

### **Manufacturer:**  
- **MAX** (Maxim Integrated)  

### **Specifications:**  
1. **Supply Voltage Range:**  
   - 4.5V to 5.5V  

2. **Reset Threshold Accuracy:**  
   - ±1.5%  

3. **Reset Timeout Period:**  
   - 140ms (min), 280ms (typ)  

4. **Watchdog Timer Timeout:**  
   - 1.6s (typ)  

5. **Operating Temperature Range:**  
   - 0°C to +70°C (Commercial grade)  

6. **Package:**  
   - 16-pin SOIC (Small Outline Integrated Circuit)  

7. **Manual Reset Input:**  
   - Active-low input for forced reset  

8. **Battery Backup Input:**  
   - Supports battery-backed SRAM and real-time clocks  

### **Descriptions:**  
- The MAX793CSE is a microprocessor supervisory circuit designed to monitor power supply voltages and ensure proper system operation.  
- It provides reset signals during power-up, power-down, and brownout conditions.  
- Includes a watchdog timer to detect software lockups.  
- Features a manual reset input for system debugging.  

### **Features:**  
1. **Power Supply Monitoring:**  
   - Monitors +5V supply with precision threshold.  

2. **Reset Output:**  
   - Active-low reset signal with a fixed timeout period.  

3. **Watchdog Timer:**  
   - Prevents system lockup by requiring periodic toggling.  

4. **Battery Backup Support:**  
   - Allows seamless switchover to backup battery power.  

5. **Low Power Consumption:**  
   - Typically consumes 50μA in normal operation.  

6. **Manual Reset Input:**  
   - Allows external reset triggering.  

7. **Power-Fail Comparator:**  
   - Early warning for power loss.  

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

Application Scenarios & Design Considerations

3.0V/3.3V Adjustable Microprocessor Supervisory Circuits

Alternative Part Number

  • ADM8691ARWZ --: Pin-compatible microprocessor supervisory circuit with reset and watchdog functions, direct functional replacement for the MAX793 in most designs.
  • DS1232LPS --: Similar microprocessor supervisor with reset and watchdog timing, widely used as a drop-in substitute in supervisory applications.
  • TPS3705-33DGNR --: Supervisory circuit offering reset and watchdog functions with comparable thresholds, suitable alternative when supply and package constraints allow.
  • TPS3705-33DR --: Supply voltage supervisor with reset and watchdog in SOIC, offering comparable monitoring behavior and a different vendor/series for second-source flexibility.

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