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MAX481CPA from MAXIM,MAXIM - Dallas Semiconductor

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MAX481CPA

Manufacturer: MAXIM, MAX

Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

Partnumber Manufacturer Quantity Availability
MAX481CPA MAXIM, MAX 4970 In Stock

Description and Introduction

Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers The MAX481CPA 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  
- **Low Quiescent Current:** 120µA (typical)  
- **Data Rate:** Up to 2.5Mbps  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 8-pin PDIP (Plastic Dual In-line Package)  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Receiver Input Impedance:** 12kΩ (minimum)  
- **Driver Output Voltage Swing:** ±5V (with external termination)  
- **Common-Mode Input Voltage Range:** -7V to +12V  

### **Descriptions:**  
The MAX481CPA is a low-power, RS-485/RS-422 compliant transceiver designed for half-duplex communication. It features a slew-rate-limited driver to reduce EMI and minimize reflections in improperly terminated cables. The device includes fail-safe circuitry to ensure a logic-high receiver output when inputs are open or shorted.  

### **Features:**  
- **Low Power Consumption:** Ideal for battery-powered applications.  
- **Slew-Rate Limited Driver:** Reduces EMI and cable reflections.  
- **Half-Duplex Communication:** Supports bidirectional data transmission.  
- **Thermal Shutdown Protection:** Prevents damage from excessive power dissipation.  
- **Receiver Fail-Safe:** Ensures valid output with open or shorted inputs.  
- **Compatible with RS-485 & RS-422 Standards:** Suitable for industrial and telecom applications.  
- **Wide Common-Mode Range:** Allows operation in noisy environments.  

For detailed electrical characteristics and application notes, refer to the official datasheet from Analog Devices (formerly Maxim Integrated).

Application Scenarios & Design Considerations

Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

Alternative Part Number

  • SN75176BCP --: Industry-standard RS-485/RS-422 transceiver in 8-pin DIP, pin-compatible with MAX481 and widely available from multiple sources.
  • ADM485ANZ --: Low-power RS-485 transceiver in 8-pin DIP with similar data rate and supply range, a direct functional substitute for the MAX481.
  • ST485BCN --: RS-485/RS-422 transceiver in 8-pin DIP offering comparable performance and pinout, suitable as a cost-effective drop-in alternative.
  • LTC485CN8 --: RS-485 transceiver in DIP-8 with similar electrical characteristics and pin configuration, a common alternative to the MAX481.
  • ST485CN --: RS-485/RS-422 transceiver in DIP-8 offering comparable electrical performance as a cost-effective drop-in alternative.

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