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MAX490CSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX490CSA

Manufacturer: MAXIM, MAX

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

Partnumber Manufacturer Quantity Availability
MAX490CSA MAXIM, MAX 4678 In Stock

Description and Introduction

Low-Power / Slew-Rate-Limited RS-485/RS-422 Transceivers The MAX490CSA is a low-power, slew-rate-limited RS-485/RS-422 transceiver manufactured by Maxim Integrated.  

### **Specifications:**  
- **Supply Voltage:** +5V  
- **Operating Temperature Range:** 0°C to +70°C  
- **Data Rate:** Up to 2.5Mbps  
- **Number of Drivers/Receivers:** 1 Driver, 1 Receiver  
- **Slew Rate Limited:** Reduces EMI and reflections  
- **Low Power Consumption:**  
  - **Shutdown Current:** 1µA (max)  
  - **Operating Current:** 120µA (max)  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Package:** 8-pin SOIC  

### **Descriptions:**  
- Designed for half-duplex communication in RS-485/RS-422 networks.  
- Features slew-rate-limited drivers to minimize EMI and reduce reflections in unterminated cables.  
- Includes a low-power shutdown mode for power-sensitive applications.  
- Robust ESD protection enhances reliability in harsh environments.  

### **Features:**  
- **Low-Power Operation:** Ideal for battery-powered systems.  
- **Slew-Rate Limiting:** Improves signal integrity.  
- **Thermal Shutdown Protection:** Prevents damage from excessive power dissipation.  
- **Receiver Fail-Safe:** Ensures a logic-high output when inputs are open or shorted.  
- **Wide Common-Mode Range:** ±7V allows for noise immunity in long cable runs.  

This transceiver is commonly used in industrial control, automotive, and instrumentation applications requiring reliable serial communication.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • SN75176BDR --: Industry-standard RS-485/RS-422 transceiver, pin-compatible with MAX490 in SOIC-8, widely available and cost-effective.
  • ADM485ARZ --: Low-power RS-485 transceiver with similar electrical characteristics and SOIC-8 footprint, suitable drop-in replacement.
  • SP485ECN-L --: RS-485 transceiver with enhanced ESD protection, same 8-pin package and function, good availability.
  • SP490CS-L --: Pin-compatible RS-485/RS-422 transceiver in an 8-pin SOIC package with equivalent full-duplex functionality and similar electrical specifications.

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