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MAX485ESA

Manufacturer: MAXIM, MAX, MAXI

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

Partnumber Manufacturer Quantity Availability
MAX485ESA MAXIM, MAX, MAXI 20660 In Stock

Description and Introduction

Low-Power / Slew-Rate-Limited RS-485/RS-422 Transceivers The MAX485ESA is a low-power transceiver for RS-485 and RS-422 communication. Here are its key specifications, descriptions, and features:

### **Manufacturer:**  
- **Maxim Integrated** (now part of Analog Devices)

### **Key Specifications:**  
- **Supply Voltage:** +5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Data Rate:** Up to 2.5Mbps  
- **Number of Drivers/Receivers:** 1 Driver, 1 Receiver  
- **Half-Duplex Communication**  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Low Power Consumption:**  
  - **Shutdown Current:** 0.1µA (typical)  
  - **Quiescent Current:** 300µA (typical)  
- **Package:** 8-Pin SOIC (MAX485ESA)  

### **Description:**  
The MAX485ESA is designed for balanced data transmission in noisy industrial environments. It complies with RS-485 and RS-422 standards, supporting half-duplex communication. The device features slew-rate-limited drivers to reduce EMI and minimize reflections in improperly terminated cables.

### **Features:**  
- **Low Power Consumption** for battery-operated applications.  
- **Slew-Rate Limited Drivers** for reduced EMI.  
- **Wide Common-Mode Voltage Range** (-7V to +12V) for noise immunity.  
- **Thermal Shutdown Protection** to prevent damage from excessive power dissipation.  
- **Allows up to 32 Unit Loads** on a single bus.  
- **Receiver Failsafe Design** ensures a logic-high output when inputs are open or shorted.  

This transceiver is commonly used in industrial control systems, building automation, and point-of-sale equipment.

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 in SOIC-8, pin-compatible with MAX485 and widely available as a direct functional drop-in.
  • SP485ECN-L --: RS-485 transceiver in SOIC-8 with the same pinout and function as MAX485, offering comparable performance and cost.
  • ST485ECDR --: Low-power RS-485/RS-422 transceiver in SOIC-8, pin-compatible with MAX485 and suitable for the same half-duplex bus applications.
  • ST485EBDR --: Low-power RS-485/RS-422 transceiver in SOIC-8, pin-compatible with MAX485 and suitable as a drop-in replacement.

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