ICL3243CA

One microamp supply-current, +3V to +5.5V, 250kbps, RS-232 transmitter/receiver The ICL3243CA is a RS-232 transceiver manufactured by **INTERSIL** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available data:

### **Specifications:**
- **Supply Voltage:** 3.0V to 5.5V  
- **Data Rate:** Up to **250kbps**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Number of Drivers/Receivers:** **3 Drivers, 5 Receivers**  
- **ESD Protection:** **±15kV (Human Body Model)**  
- **Package:** **28-Lead SSOP**  
- **Compliance:** Meets **EIA/TIA-232-F** standards  

### **Description:**
The ICL3243CA is a **low-power, 3.0V to 5.5V RS-232 transceiver** designed for serial communication applications. It integrates charge-pump circuitry to generate RS-232 voltage levels from a single supply, eliminating the need for external ±12V supplies.  

### **Features:**
- **Low Power Consumption:**  
  - **Auto-Powerdown** feature for reduced power usage.  
  - **1µA Supply Current** in shutdown mode.  
- **Enhanced ESD Protection:**  
  - **±15kV HBM** on transmitter outputs and receiver inputs.  
- **Wide Supply Range:** Supports **3.0V to 5.5V** operation.  
- **On-Chip Charge Pump:** Generates RS-232 compliant **±5.5V** output levels.  
- **Receiver Hysteresis:** Improves noise immunity.  
- **Pin-Compatible:** Drop-in replacement for similar RS-232 transceivers.  

This device is commonly used in **battery-powered systems, industrial controls, and portable equipment** requiring robust RS-232 communication.  

Would you like additional details on pin configurations or application notes?

One microamp supply-current, +3V to +5.5V, 250kbps, RS-232 transmitter/receiver