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MAX687CPA from MAXIN,MAXIM - Dallas Semiconductor

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MAX687CPA

Manufacturer: MAXIN

High-Accuracy / Low-Dropout Linear Regulators

Partnumber Manufacturer Quantity Availability
MAX687CPA MAXIN 164 In Stock

Description and Introduction

High-Accuracy / Low-Dropout Linear Regulators The MAX687CPA 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:

### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX687CPA  
- **Package:** 8-pin PDIP (Plastic Dual In-Line Package)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Options:** Factory-set or adjustable  
- **Reset Timeout Period:** Adjustable via external capacitor  
- **Watchdog Timer:** Programmable timeout period (1.6s typical)  
- **Manual Reset Input:** Active-low (MR)  
- **Operating Temperature Range:** 0°C to +70°C (Commercial)  
- **Power-On Reset (POR) Circuitry:** Ensures proper system initialization  

### **Descriptions:**
The MAX687CPA is a supervisory IC designed to monitor power supply voltages in microprocessor-based systems. It provides reset signals to the μP in case of power supply anomalies, ensuring reliable system operation. The device includes a watchdog timer to detect software lockups and a manual reset input for user-initiated resets.  

### **Features:**
- **Voltage Monitoring:** Monitors up to four power supply voltages (VCC and three auxiliary inputs).  
- **Adjustable Reset Threshold:** Allows customization for different system requirements.  
- **Watchdog Timer:** Prevents system lockups by triggering a reset if not toggled within a set period.  
- **Manual Reset Input:** Enables external reset control via a pushbutton or logic signal.  
- **Low Quiescent Current:** Minimizes power consumption.  
- **Power-Fail Comparator:** Provides early warning of impending power failure.  
- **Open-Drain Reset Output:** Compatible with various logic levels.  

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

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