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MAX691AESE from MAXIM,MAXIM - Dallas Semiconductor

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MAX691AESE

Manufacturer: MAXIM

Microprocessor Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX691AESE MAXIM 524 In Stock

Description and Introduction

Microprocessor Supervisory Circuits The MAX691AESE 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 (now Analog Devices)  
- **Part Number:** MAX691AESE  
- **Package:** 16-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Backup Battery Switchover Voltage:** Adjustable or fixed (depending on variant)  
- **Watchdog Timer:** Yes (programmable timeout period)  
- **Reset Threshold Accuracy:** ±1.5% (typical)  
- **Reset Timeout Period:** Adjustable (typically 200ms)  
- **Manual Reset Input:** Yes (active-low)  
- **Low-Power Consumption:** Typically 5µA in backup mode  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX691AESE is a µP supervisory circuit designed to monitor power supply voltages and provide reset signals to microprocessors in case of power failures or voltage drops. It includes a watchdog timer, manual reset input, and backup battery switchover functionality to ensure reliable system operation.  

### **Features:**  
- **Voltage Monitoring:** Monitors VCC and triggers a reset if voltage drops below a preset threshold.  
- **Watchdog Timer:** Prevents system lockup by resetting the µP if not toggled within a set time.  
- **Backup Battery Support:** Automatically switches to backup power during main power failure.  
- **Manual Reset Input:** Allows external reset control via a pushbutton or logic signal.  
- **Low Quiescent Current:** Minimizes power consumption in battery-backed applications.  
- **Wide Operating Voltage Range:** Supports systems from 1.2V to 5.5V.  
- **High Reset Threshold Accuracy:** Ensures reliable system operation.  

This information is based on the manufacturer's datasheet and technical documentation. For exact details, refer to the official datasheet from Analog Devices (formerly Maxim Integrated).

Application Scenarios & Design Considerations

Microprocessor Supervisory Circuits

Alternative Part Number

  • ADM691AARWZ --: Pin-compatible microprocessor supervisory circuit with reset and watchdog functions, direct functional equivalent in a different series.
  • LTC1232CS8 --: Similar microprocessor supervisory IC offering reset and watchdog timing, suitable drop-in for many MAX691A applications.
  • DS1232LPS --: Microprocessor monitor with reset and watchdog functions, widely used as an alternative supervisory circuit in the same application space.
  • TL7705ACP --: Widely available supply voltage supervisor with reset output, suitable replacement when watchdog is not required.

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