3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection 16-SSOP 0 to 70 The **TRS3221ECDBRG4** is a **RS-232 transceiver** manufactured by **Texas Instruments (TI)**.  

### **Key Specifications:**  
- **Supply Voltage:** 3V to 5.5V  
- **Data Rate:** Up to **1Mbps**  
- **Number of Drivers/Receivers:** **2 Drivers, 2 Receivers**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Package:** **SSOP-16 (DBR)**  
- **ESD Protection:** **±15kV (Human Body Model)**  
- **Low Power Consumption:** **1µA (Typical) in Shutdown Mode**  

### **Descriptions & Features:**  
- **RS-232 compliant** with **auto-powerdown** for reduced power consumption.  
- **Integrated charge pump** for **single-supply operation** (no external ±12V required).  
- **Enhanced ESD protection** on **transmitter outputs and receiver inputs**.  
- **Supports mixed 3.3V/5V logic levels** for flexible interfacing.  
- **Designed for battery-powered and portable applications**.  

This device is commonly used in **industrial, medical, and communication systems** requiring **robust RS-232 signaling**.  

Would you like additional technical details?