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MAX1490ACPG from MAXIM,MAXIM - Dallas Semiconductor

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MAX1490ACPG

Manufacturer: MAXIM, MAX

Complete / Isolated RS-485/RS-422 Data Interface

Partnumber Manufacturer Quantity Availability
MAX1490ACPG MAXIM, MAX 362 In Stock

Description and Introduction

Complete / Isolated RS-485/RS-422 Data Interface The MAX1490ACPG is a high-performance, dual-channel digital isolator manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual details about its specifications, descriptions, and features:

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

### **Part Number:**  
- MAX1490ACPG  

### **Description:**  
The MAX1490ACPG is a dual-channel digital isolator designed to provide galvanic isolation between two systems. It is commonly used in industrial, medical, and communication applications where electrical isolation is required to protect sensitive components from high voltages and noise.  

### **Key Features:**  
1. **Dual-Channel Isolation:**  
   - Two independent isolation channels.  
   - Supports bidirectional data transmission.  

2. **High-Speed Operation:**  
   - Data rates up to **25Mbps**.  

3. **High Voltage Isolation:**  
   - Withstands **2.5kV (RMS) isolation voltage** for 1 minute.  

4. **Wide Supply Voltage Range:**  
   - Operates from **3V to 5.5V** on both sides.  

5. **Low Power Consumption:**  
   - Typically consumes **1.7mA per channel** at 1Mbps.  

6. **Robust Noise Immunity:**  
   - High common-mode transient immunity (CMTI) of **25kV/µs**.  

7. **Package:**  
   - **20-pin PDIP (Plastic Dual In-line Package)**.  

8. **Operating Temperature Range:**  
   - **-40°C to +85°C**.  

9. **Safety Certifications:**  
   - UL 1577 recognized.  
   - CSA and VDE certifications (depending on variant).  

10. **Applications:**  
   - Industrial automation.  
   - Medical equipment.  
   - Communication interfaces.  
   - Isolated power supplies.  

### **Additional Notes:**  
- The MAX1490ACPG replaces optocouplers with a more reliable, high-speed digital isolation solution.  
- It includes fail-safe features to ensure proper operation during power-up/down conditions.  

For exact datasheet details, refer to the official documentation from Analog Devices (formerly Maxim Integrated).

Application Scenarios & Design Considerations

Complete / Isolated RS-485/RS-422 Data Interface

Alternative Part Number

  • ADM2490EBRWZ --: Isolated RS-485/RS-422 transceiver with the same function and pin-compatible DIP/SOIC options; widely available and a direct functional replacement.
  • SN65HVD230 --: RS-485 transceiver from a different series with similar signaling capability; suitable when isolation is not strictly required and offers good availability.
  • IL485-3E --: Isolated RS-485 transceiver with comparable isolation and data-rate characteristics, providing an alternative source for the same application.
  • IL485E --: Isolated RS-485 transceiver offering galvanic isolation and full-duplex operation, a common alternative when MAX1490 is unavailable.
  • ISO485 --: Isolated RS-485 transceiver family providing comparable isolation and bus interface characteristics for industrial communication designs.

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