Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors **Manufacturer:** Linear Technology (now part of Analog Devices)  

**Part Number:** LT1139ACN  

### **Specifications:**  
- **Type:** RS-232 Transceiver  
- **Number of Drivers/Receivers:** 3 Drivers, 5 Receivers  
- **Supply Voltage:** Single +5V  
- **Data Rate:** Up to 250kbps  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 24-Pin PDIP (Plastic Dual In-Line Package)  
- **ESD Protection:** ±10kV (Human Body Model)  
- **Low Power Consumption:** Typically 5mA in shutdown mode  

### **Descriptions:**  
The LT1139ACN is a high-performance RS-232 transceiver designed for serial communication applications. It integrates charge-pump voltage converters to generate RS-232 voltage levels from a single +5V supply, eliminating the need for additional power supplies.  

### **Features:**  
- **Single +5V Supply Operation**  
- **On-Chip Charge Pump for RS-232 Voltage Levels**  
- **Low Power Consumption**  
- **Three Drivers and Five Receivers**  
- **Enhanced ESD Protection (±10kV)**  
- **Shutdown Mode for Power Savings**  
- **Compatible with TTL/CMOS Logic Levels**  
- **Wide Operating Temperature Range**  

This device is commonly used in industrial, telecom, and embedded systems requiring reliable RS-232 communication.

Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors