3-V To 5.5-V Single Channel RS-232 1 Mbit/s Line Driver/Receiver 16-TSSOP -40 to 85 The **SN65C3221EPWR** is a 3-V to 5.5-V dual-channel RS-232 line driver/receiver manufactured by **Texas Instruments (TI)**.  

### **Key Specifications:**  
- **Supply Voltage Range:** 3 V to 5.5 V  
- **Data Rate:** Up to **1 Mbps**  
- **Number of Drivers/Receivers:** 2/2  
- **ESD Protection:** ±15 kV (Human Body Model)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** **TSSOP-16 (PW)**  

### **Features:**  
- **Low Power Consumption:** Meets EIA/TIA-232-F standards  
- **Auto-Powerdown Feature:** Reduces power consumption when not in use  
- **Enhanced ESD Protection:** Protects against electrostatic discharge  
- **Integrated Charge Pump:** Eliminates the need for external power supplies  
- **Wide Supply Voltage Range:** Supports 3-V to 5.5-V operation  

### **Applications:**  
- **Industrial Systems**  
- **Point-of-Sale (POS) Terminals**  
- **Battery-Powered Devices**  
- **Telecommunication Equipment**  

This device is designed for **bidirectional data communication** over RS-232 interfaces.