Microprocessor Supervisory Circuit The MAX791MJE is a microprocessor supervisory circuit manufactured by Maxim Integrated. Below are the factual details from Ic-phoenix technical data files:
### **Specifications:**
- **Supply Voltage Range:** 4.5V to 5.5V
- **Reset Threshold Voltage:** Adjustable or fixed (specific value depends on variant)
- **Reset Timeout Period:** Typically 200ms (adjustable in some models)
- **Watchdog Timer:** Yes, with programmable timeout
- **Backup Battery Switchover:** Supports automatic switchover to backup battery
- **Power-Fail Comparator:** Monitors input voltage for early warning
- **Operating Temperature Range:** -40°C to +85°C (industrial grade)
- **Package Type:** DIP, SOIC (varies by model)
### **Descriptions:**
- The MAX791MJE is a comprehensive power management and supervisory IC designed for microprocessor-based systems.
- It ensures reliable system operation by monitoring power supply voltages, generating reset signals, and providing watchdog timer functionality.
- Includes a backup battery switchover feature to maintain system operation during power failures.
### **Features:**
- **Reset Output:** Active-low or active-high (configurable)
- **Watchdog Timer:** Prevents system lockup by requiring periodic toggling
- **Battery Backup Control:** Seamless switchover to backup power
- **Power-Fail Warning:** Early alert for impending power loss
- **Low Quiescent Current:** Minimizes power consumption in standby mode
- **Manual Reset Input:** Allows external reset triggering
For exact datasheet details, refer to Maxim Integrated's official documentation.
