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SP481CN

Manufacturer: SP, SIPEX, SIPEX

Low Power Half-Duplex RS-485 Transceivers

Partnumber Manufacturer Quantity Availability
SP481CN SP, SIPEX, SIPEX 2511 In Stock

Description and Introduction

Low Power Half-Duplex RS-485 Transceivers The SP481CN is a RS-485/RS-422 transceiver manufactured by Sipex (now part of Exar Corporation). Below are the factual details about its specifications, descriptions, and features:

### **Manufacturer:**  
Sipex (now Exar Corporation)  

### **Description:**  
The SP481CN is a low-power, half-duplex RS-485/RS-422 transceiver designed for bidirectional data communication over balanced lines. It is commonly used in industrial, instrumentation, and networking applications.  

### **Key Features:**  
- **Interface Type:** RS-485/RS-422  
- **Data Rate:** Up to 250 kbps  
- **Operating Voltage:** 5V ±10%  
- **Half-Duplex Operation**  
- **Low Power Consumption:**  
  - 120 µA (Typical Quiescent Current)  
  - 1 µA (Shutdown Mode)  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Driver Output Current:** ±60 mA (Short-Circuit Protected)  
- **Receiver Input Sensitivity:** ±200 mV  
- **Thermal Shutdown Protection**  
- **Operating Temperature Range:** -40°C to +85°C  

### **Package:**  
- **8-Pin PDIP (Plastic Dual In-Line Package)**  

### **Applications:**  
- Industrial control systems  
- Instrumentation  
- Point-of-sale terminals  
- Networking equipment  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics and application notes, refer to the official documentation.

Application Scenarios & Design Considerations

Low Power Half-Duplex RS-485 Transceivers

Alternative Part Number

  • MAX481CPA --: Pin-compatible RS-485/RS-422 transceiver with the same 8-pin DIP footprint and similar electrical characteristics, widely available as a direct functional replacement.
  • SN75176BP --: Industry-standard RS-485 differential bus transceiver in 8-pin DIP, pin-compatible with the SP481 and suitable for the same half-duplex applications.
  • DS481CN --: Equivalent low-power RS-485/RS-422 transceiver in DIP-8 package, offering comparable driver/receiver performance for drop-in substitution.
  • ADM485AN --: Low-power RS-485 transceiver in DIP-8 offering comparable performance and pinout compatibility.
  • ADM485ANZ --: Low-power RS-485 transceiver in DIP-8 with compatible pinout and performance, suitable as an alternative when the original Sipex part is unavailable.

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