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MAX690MJA/883B from MAXIM,MAXIM - Dallas Semiconductor

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MAX690MJA/883B

Manufacturer: MAXIM

Microprocessor Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX690MJA/883B,MAX690MJA883B MAXIM 27 In Stock

Description and Introduction

Microprocessor Supervisory Circuits The MAX690MJA/883B is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX690MJA/883B  
- **Category:** Microprocessor Supervisory Circuit  
- **Package:** CERDIP-8  
- **Operating Temperature Range:** -55°C to +125°C  
- **Qualification Level:** MIL-PRF-38535 Class B (883B)  
- **Supply Voltage (VCC):** 1.2V to 5.5V  
- **Watchdog Timer:** Yes (1.6s typical timeout)  
- **Reset Threshold Accuracy:** ±1.5% (for 5V supply)  
- **Reset Output:** Active-low (RESET)  
- **Power-On Reset Delay:** 200ms (typical)  
- **Battery Backup Switchover:** Yes (for CMOS RAM)  
- **Quiescent Current:** 30μA (typical)  

### **Descriptions:**  
The MAX690MJA/883B is a high-reliability supervisory circuit designed for military and aerospace applications. It monitors system power supply voltages and provides a reset signal to the microprocessor during power-up, power-down, or brownout conditions. It includes a watchdog timer to detect software lockups and a backup battery switchover for CMOS RAM data retention.  

### **Features:**  
- **Precision Voltage Monitoring:** Ensures reliable reset generation.  
- **Watchdog Timer:** Detects software failures with a 1.6s timeout.  
- **Battery Backup Switchover:** Automatically switches to backup power when VCC fails.  
- **Low Power Consumption:** 30μA typical supply current.  
- **MIL-STD-883 Qualified:** High-reliability military-grade performance.  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  
- **Power-On Reset Delay:** Ensures stable system startup.  

This information is strictly factual and derived from the manufacturer's datasheet and specifications. No additional guidance or suggestions are included.

Application Scenarios & Design Considerations

Microprocessor Supervisory Circuits

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