+-15kV ESD protected, 5V, low power, high speed and slew rate limited, full duplex, RS-485/RS-422 transceiver. The ISL8491EIBZ is a RS-485/RS-422 transceiver manufactured by **Intersil** (now part of Renesas Electronics). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Intersil  
- **Type:** RS-485/RS-422 Transceiver  
- **Supply Voltage:** 4.5V to 5.5V  
- **Data Rate:** Up to 20Mbps  
- **Number of Drivers/Receivers:** 1 Driver, 1 Receiver  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-SOIC  

### **Descriptions:**  
- The ISL8491EIBZ is a high-speed differential bus transceiver designed for RS-485 and RS-422 communication.  
- It features a single driver and receiver, supporting full-duplex communication.  
- The device is optimized for high-speed data transmission with low power consumption.  

### **Features:**  
- **High-Speed Operation:** Supports data rates up to 20Mbps.  
- **Wide Supply Range:** Operates from 4.5V to 5.5V.  
- **Low Power Consumption:** Designed for energy-efficient applications.  
- **ESD Protection:** ±15kV (Human Body Model) on bus pins.  
- **Half-Duplex and Full-Duplex Compatibility:** Supports multiple communication modes.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Industrial Temperature Range:** Suitable for harsh environments (-40°C to +85°C).  

This information is based solely on the manufacturer's datasheet and technical documentation.

+-15kV ESD protected, 5V, low power, high speed and slew rate limited, full duplex, RS-485/RS-422 transceiver.