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SP491EEP from SIPEX

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SP491EEP

Manufacturer: SIPEX, SP

Enhanced Full Duplex RS-485 Transceivers

Partnumber Manufacturer Quantity Availability
SP491EEP SIPEX, SP 2065 In Stock

Description and Introduction

Enhanced Full Duplex RS-485 Transceivers The SP491EEP is a differential line transceiver manufactured by SIPEX (now part of Microchip Technology). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** SIPEX (now Microchip Technology)  
- **Type:** Differential Line Transceiver  
- **Supply Voltage:** 4.5V to 5.5V  
- **Data Rate:** Up to 10Mbps  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin DIP or SOIC  
- **Interface Standards:** RS-422, RS-485 compatible  
- **Number of Drivers/Receivers:** 1 Driver, 1 Receiver  

### **Descriptions:**  
- The SP491EEP is a low-power differential bus/line transceiver designed for RS-485 and RS-422 communication.  
- It features a single driver and receiver, enabling half-duplex communication.  
- The device is optimized for high-speed data transmission in industrial and networking applications.  

### **Features:**  
- **Low Power Consumption:** Operates with a single 5V supply.  
- **ESD Protection:** Up to ±15kV (Human Body Model) for robust performance.  
- **Thermal Shutdown Protection:** Prevents damage from excessive heat.  
- **Driver Output Enable/Disable Control:** Allows tri-state outputs for bus sharing.  
- **Receiver Fail-Safe Design:** Ensures a logic-high output when inputs are open or shorted.  
- **Compatible with TTL and CMOS Logic Levels:** Ensures easy interfacing with microcontrollers and digital systems.  

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

Application Scenarios & Design Considerations

Enhanced Full Duplex RS-485 Transceivers

Alternative Part Number

  • MAX491ECP --: Pin-compatible RS-485/RS-422 transceiver with the same DIP-14 footprint and ESD-protected E-grade rating, widely available as a direct functional replacement.
  • SN75176BP --: Industry-standard RS-485 differential bus transceiver in DIP-8, commonly used as a drop-in substitute for SP491-class interfaces in many designs.
  • ADM485AN --: Low-power RS-485 transceiver with similar electrical characteristics and DIP package, suitable as a reliable alternate source.

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