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MAX693EWE from MAX,MAXIM - Dallas Semiconductor

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MAX693EWE

Manufacturer: MAX, MAXIM, MAXIM

Microprocessor Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX693EWE MAX, MAXIM, MAXIM 2533 In Stock

Description and Introduction

Microprocessor Supervisory Circuits The **MAX693EWE** is a microprocessor (µP) supervisory circuit manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on the available knowledge base:

### **Manufacturer:**  
- **Maxim Integrated** (now part of Analog Devices)  

### **Specifications:**  
- **Function:** µP Supervisory Circuit  
- **Package:** 16-pin Wide SOIC (WSOIC)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (typical)  
- **Reset Timeout Period:** Adjustable (factory-set or user-adjustable via external capacitor)  
- **Watchdog Timer:** Yes (programmable timeout)  
- **Manual Reset Input:** Yes (active-low)  
- **Battery Backup Switchover:** Yes (for CMOS RAM or other low-power circuitry)  
- **Power-Fail Comparator:** Yes (for early warning of power loss)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The **MAX693EWE** monitors µP power supplies, ensuring proper system operation by generating a reset signal during power-up, power-down, or brownout conditions.  
- It includes a watchdog timer to detect µP code execution failures and a manual reset input for user-initiated resets.  
- The battery backup feature automatically switches to a backup supply when the main power fails, protecting critical data.  

### **Features:**  
- **Low Quiescent Current:** Extends battery life in backup mode.  
- **Adjustable Reset Timeout:** Configurable via an external capacitor.  
- **Power-Fail Comparator:** Provides early warning for power loss.  
- **CMOS/TTL-Compatible Inputs/Outputs:** Ensures compatibility with µP systems.  
- **Reliable µP Supervision:** Prevents system errors due to unstable power conditions.  

For exact electrical characteristics and application details, refer to the official **MAX693EWE datasheet** from Analog Devices (formerly Maxim Integrated).

Application Scenarios & Design Considerations

Microprocessor Supervisory Circuits

Alternative Part Number

  • ADM693AN --: Pin-compatible microprocessor supervisory circuit with reset and watchdog functions, widely available and functionally equivalent to the MAX693.
  • DS1232 --: Microprocessor supervisor with reset and watchdog timer, similar function and commonly used as a drop-in alternative in supervisory applications.
  • TL7705ACP --: Supply voltage supervisor with reset output, suitable replacement for basic supervisory functions though pinout differs and should be verified.

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