20-Output, 76V, Serial-Interfaced VFD Tube Drivers The **MAX6931AUI** is a product manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX6931AUI
- **Package:** 28-pin TSSOP (Thin Shrink Small Outline Package)
- **Type:** Microprocessor Supervisory Circuit
- **Supply Voltage Range:** 1.8V to 5.5V
- **Operating Temperature Range:** -40°C to +85°C
- **Reset Timeout Period:** Adjustable or fixed options available
- **Watchdog Timer:** Yes (programmable)
- **Manual Reset Input:** Yes
- **Battery Backup Switch:** Yes (for SRAM/CMOS RAM)
- **Low Quiescent Current:** Typically 15µA (battery backup mode)
### **Descriptions:**
The **MAX6931AUI** is a microprocessor supervisory circuit designed to monitor power supply voltages and provide reset signals to microprocessors or other digital systems. It includes a watchdog timer, manual reset input, and battery backup switching for memory protection. It is commonly used in embedded systems, industrial controllers, and battery-powered applications where reliable power monitoring is critical.
### **Features:**
1. **Wide Supply Voltage Range (1.8V to 5.5V)** – Suitable for low-voltage and mixed-voltage systems.
2. **Programmable Watchdog Timer** – Ensures system integrity by resetting the processor if software fails.
3. **Manual Reset Input** – Allows for external reset triggering.
4. **Battery Backup Switch** – Automatically switches to backup battery power during main power failure.
5. **Low Power Consumption** – Minimal current draw in battery backup mode (~15µA).
6. **Adjustable Reset Timeout** – Configurable reset delay to suit different applications.
7. **Industrial Temperature Range (-40°C to +85°C)** – Suitable for harsh environments.
This information is strictly based on the manufacturer's datasheet and technical documentation.
