Low-Cost, uP Supervisory Circuits The MAX705CUA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)
- **Part Number:** MAX705CUA
- **Package:** 8-pin μMAX
- **Operating Voltage Range:** 1.2V to 5.5V
- **Reset Threshold Options:** Adjustable or fixed (e.g., 4.40V, 4.65V, etc.)
- **Reset Timeout Period:** Typically 140ms (adjustable with external capacitor)
- **Operating Temperature Range:** -40°C to +85°C
- **Quiescent Current:** Typically 15μA (low power consumption)
- **Manual Reset Input:** Active-low (MR) for external reset control
- **Watchdog Timer:** 1.6s timeout (adjustable)
### **Descriptions:**
The MAX705CUA is a compact μP supervisory circuit designed to monitor power supply voltages and provide a reset signal to microprocessors or microcontrollers in case of power failure or brownout conditions. It ensures reliable system operation by preventing erratic behavior during power-up, power-down, or voltage fluctuations.
### **Features:**
- **Power Supply Monitoring:** Detects voltage drops below a preset threshold.
- **Manual Reset Input:** Allows external reset triggering via a pushbutton or logic signal.
- **Watchdog Timer:** Monitors μP activity; triggers reset if the watchdog is not toggled within the timeout period.
- **Low Power Consumption:** Ideal for battery-powered applications.
- **Adjustable Reset Threshold:** Some variants allow customization via external resistors.
- **Small Form Factor:** 8-pin μMAX package for space-constrained designs.
For exact datasheet details, refer to the manufacturer's documentation.
