3.3V/ Low Power/ High Speed or Slew Rate Limited/ RS-485/RS-422 Transceivers The **ISL83490IB** is a high-speed, low-power RS-485/RS-422 transceiver manufactured by **Intersil** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Supply Voltage:** 3V to 5.5V  
- **Data Rate:** Up to **20Mbps**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Number of Drivers/Receivers:** **1 Driver, 1 Receiver**  
- **Protocol Support:** **RS-485, RS-422**  
- **ESD Protection:** **±15kV (Human Body Model)**  
- **Package:** **8-lead SOIC**  

### **Descriptions:**
- The ISL83490IB is a **half-duplex** transceiver designed for **high-speed communication** in industrial and automotive applications.  
- It features **low-power operation** and **robust ESD protection**, making it suitable for harsh environments.  
- The device includes **fail-safe receiver inputs**, ensuring a **logic-high output** when inputs are open or shorted.  

### **Features:**
- **Low Power Consumption:**  
  - **1μA (Typical) Shutdown Current**  
  - **3.5mA (Typical) Supply Current (No Load)**  
- **Enhanced ESD Protection:**  
  - **±15kV HBM on Bus Pins**  
- **Wide Common-Mode Voltage Range:** **-7V to +12V**  
- **Hot-Swap Capability:** Supports **live insertion/removal** without damage.  
- **Short-Circuit Protection:** Driver outputs are protected against short circuits.  
- **3V to 5.5V Supply Range:** Compatible with **3.3V and 5V systems**.  

This transceiver is commonly used in **industrial automation, motor control, and long-distance communication networks**.  

(Note: Since Intersil was acquired by Renesas, refer to Renesas for updated documentation.)

3.3V/ Low Power/ High Speed or Slew Rate Limited/ RS-485/RS-422 Transceivers