Low-Cost / uP Supervisory Circuits The MAX813LMJA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX813LMJA
- **Package:** 8-pin CERDIP (J-lead)
- **Operating Voltage Range:** 1.2V to 5.5V
- **Reset Threshold Options:** 4.65V (MAX813), 4.40V (MAX814), 3.08V (MAX815), 2.93V (MAX816)
- **Reset Timeout Period:** 200ms (min)
- **Power-On Reset (POR) Delay:** Guaranteed after VCC drops below 1V
- **Watchdog Timer:** 1.6s timeout (nominal)
- **Manual Reset Input:** Active-low (MR)
- **Operating Temperature Range:** -55°C to +125°C (Military grade)
### **Descriptions:**
- The MAX813LMJA is a μP supervisory circuit designed to monitor power supply voltages and provide reset signals to microprocessors in critical applications.
- It integrates a watchdog timer, manual reset input, and power-fail comparator for robust system monitoring.
- The device ensures proper system operation by generating a reset signal if the supply voltage falls below a preset threshold.
- It is available in a high-reliability CERDIP package for military and industrial applications.
### **Features:**
- **Precision Voltage Monitoring:** Ensures reliable reset generation at specified thresholds.
- **Watchdog Timer:** Prevents system lockup by requiring periodic toggling from the μP.
- **Manual Reset Input:** Allows external pushbutton reset control.
- **Power-Fail Comparator:** Early warning for impending power loss.
- **Low Power Consumption:** Typically 50μA supply current.
- **Guaranteed Reset Valid Down to VCC = 1V:** Ensures proper reset even at very low voltages.
- **Military Temperature Range:** Suitable for harsh environments.
This information is based solely on the manufacturer's datasheet and technical documentation.
