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MAX491E from MAX,MAXIM - Dallas Semiconductor

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MAX491E

Manufacturer: MAX

±15kV ESD-Protected, Slew-Rate Limited, Low-Power, RS-485/RS-422 Transceivers

Partnumber Manufacturer Quantity Availability
MAX491E MAX 270 In Stock

Description and Introduction

±15kV ESD-Protected, Slew-Rate Limited, Low-Power, RS-485/RS-422 Transceivers The MAX491E is a low-power transceiver manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Supply Voltage Range:** +4.5V to +5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Data Rate:** Up to 2.5Mbps  
- **Number of Drivers/Receivers:** 1 Driver, 1 Receiver  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Low Power Consumption:**  
  - **Shutdown Mode:** 1µA (typical)  
  - **Active Mode:** 1mA (typical)  

### **Description:**  
The MAX491E is a low-power, RS-422/RS-485-compliant transceiver designed for half-duplex communication. It features a slew-rate-limited driver to minimize EMI and reduce reflections in improperly terminated cables. The device includes a receiver with fail-safe circuitry, ensuring a logic-high output when inputs are open or shorted.  

### **Features:**  
- **Slew-Rate Limited for Reduced EMI**  
- **Half-Duplex Operation**  
- **Low-Power Shutdown Mode (1µA)**  
- **Receiver Fail-Safe for Open/Shorted Inputs**  
- **Thermal Shutdown Protection**  
- **Compatible with RS-422 and RS-485 Standards**  
- **Available in 8-Pin SO, DIP, and µMAX Packages**  

This information is based solely on the manufacturer's datasheet. For detailed application notes or usage guidelines, refer to the official documentation.

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