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MAX489ESD from MAX,MAXIM - Dallas Semiconductor

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MAX489ESD

Manufacturer: MAX, MAXIM

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

Partnumber Manufacturer Quantity Availability
MAX489ESD MAX, MAXIM 4840 In Stock

Description and Introduction

Low-Power / Slew-Rate-Limited RS-485/RS-422 Transceivers The MAX489ESD is a low-power transceiver manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**
- **Supply Voltage Range:** +4.5V to +5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Data Rate:** Up to 2.5Mbps  
- **Number of Drivers/Receivers:** 1 Driver, 1 Receiver  
- **ESD Protection:** ±15kV (Human Body Model)  
- **Package:** 14-Pin SOIC (Small Outline Integrated Circuit)  
- **Quiescent Current:** 120µA (Typical)  
- **Receiver Input Impedance:** ≥12kΩ  
- **Driver Output Voltage Swing:** ±5V (Min, with 54Ω Load)  

### **Descriptions:**  
The MAX489ESD is a low-power, RS-485/RS-422 compliant transceiver designed for half-duplex communication. It features enhanced electrostatic discharge (ESD) protection, making it suitable for harsh industrial environments. The device operates from a single +5V supply and includes a driver and receiver with tri-state outputs.

### **Features:**  
- **Low Power Consumption:** 120µA quiescent current (typical).  
- **ESD Protection:** ±15kV on bus pins (Human Body Model).  
- **Half-Duplex Communication:** Supports one driver and one receiver.  
- **Wide Common-Mode Range:** -7V to +12V for robust noise immunity.  
- **Thermal Shutdown Protection:** Prevents damage from excessive power dissipation.  
- **Short-Circuit-Current Limiting:** Protects driver outputs.  
- **Tri-State Outputs:** Allows bus sharing in multi-drop networks.  
- **Compliant with RS-485/RS-422 Standards:** Ensures compatibility with industrial communication protocols.  

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

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 MAX489 and widely available as a lower-cost drop-in replacement.
  • ADM485ARZ --: RS-485 transceiver in SOIC-8 with similar driver/receiver characteristics and pinout, suitable for direct substitution in most designs.
  • SP485ECN-L --: RS-485 transceiver in SOIC-8 offering comparable electrical performance and pin compatibility, useful as a second-source alternative.

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