1microA supply current, true +3V to +5.5V RS-232 transceiver with AutoShutdown. The **MAX3221EUE** is a **3.0V to 5.5V**, **low-power**, **1-driver/1-receiver** RS-232 transceiver manufactured by **Maxim Integrated (now part of Analog Devices)**.  

### **Key Specifications:**  
- **Supply Voltage Range:** 3.0V to 5.5V  
- **Data Rate:** Up to **250kbps**  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin TSSOP (UEE)  

### **Features:**  
- **Auto-Shutdown Plus™** for reduced power consumption  
- **Always-Active Receiver** for monitoring external devices  
- **Low Standby Current:** 1µA (typical)  
- **Compliant with EIA/TIA-232 and V.28/V.24 standards**  
- **On-Chip Charge Pump** for RS-232 voltage generation  
- **Single-Chip Solution** for RS-232 communication  

### **Applications:**  
- Battery-powered devices  
- Handheld equipment  
- Industrial controls  
- Networking devices  

The MAX3221EUE is designed for **low-power RS-232 communication** in space-constrained applications.