Microprocessor Supervisory Circuits The **MAX691EWE+T** 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 Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Category:** Supervisory Circuits
- **Type:** μP Supervisory Circuit
- **Package:** 16-SOIC (150 mil)
- **Operating Temperature Range:** -40°C to +85°C
- **Supply Voltage (VCC):** 1.2V to 5.5V
- **Reset Threshold Voltage:** Adjustable or fixed (model-dependent)
- **Reset Timeout Period:** Typically 200ms (model-dependent)
- **Watchdog Timer:** Yes (programmable)
- **Manual Reset Input:** Yes
- **Battery Backup Switchover:** Yes
- **Low-Power Consumption:** Typically 5μA (in battery backup mode)
### **Descriptions:**
The **MAX691EWE+T** is a supervisory IC designed to monitor power supply voltages in microprocessor-based systems. It ensures proper system operation by generating a reset signal when the supply voltage drops below a specified threshold. It includes a watchdog timer, manual reset input, and battery backup switchover for reliable system operation during power failures.
### **Features:**
- **Voltage Monitoring:** Monitors VCC for undervoltage conditions.
- **Watchdog Timer:** Prevents system lockup by requiring periodic toggling.
- **Manual Reset Input:** Allows external reset triggering.
- **Battery Backup:** Automatically switches to backup battery when main power fails.
- **Low Quiescent Current:** Minimizes power consumption in battery mode.
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.
- **Industrial Temperature Range:** Operates from -40°C to +85°C.
This information is strictly based on the manufacturer's datasheet and technical specifications.
