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MAX845EUA from MAXIM,MAXIM - Dallas Semiconductor

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MAX845EUA

Manufacturer: MAXIM, MAX

Isolated Transformer Driver for PCMCIA Applications

Partnumber Manufacturer Quantity Availability
MAX845EUA MAXIM, MAX 54 In Stock

Description and Introduction

Isolated Transformer Driver for PCMCIA Applications The MAX845EUA is a low-power, isolated RS-485/RS-422 data interface IC manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Package:** 8-pin µMAX  
- **Supply Voltage (V+):** 4.5V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Data Rate:** Up to 250kbps  
- **Isolation Voltage:** 1500V RMS (continuous)  
- **Quiescent Current:** 1.5mA (typical)  
- **Output Drive Current:** ±25mA (minimum)  

### **Descriptions:**
The MAX845EUA is a galvanically isolated RS-485/RS-422 transceiver designed for low-power applications. It provides robust electrical isolation (1500V RMS) to protect sensitive circuitry from ground loops and high-voltage transients. The device operates from a single 5V supply and supports data rates up to 250kbps, making it suitable for industrial, medical, and communication systems requiring noise immunity and safety isolation.

### **Features:**
- **Isolated RS-485/RS-422 Interface**  
- **Low Power Consumption (1.5mA typical quiescent current)**  
- **Single 5V Supply Operation**  
- **1500V RMS Isolation for Safety Compliance**  
- **Short-Circuit Protection on Driver Outputs**  
- **Thermal Shutdown Protection**  
- **Compact 8-pin µMAX Package**  
- **Supports Half-Duplex Communication**  

This device is commonly used in industrial automation, medical equipment, and isolated data acquisition systems.

Application Scenarios & Design Considerations

Isolated Transformer Driver for PCMCIA Applications

Alternative Part Number

  • LT3469ETS8 --: Transformer driver / isolated power supply IC with similar function and small package, suitable replacement for isolated bias supplies.
  • SN6501DBVR --: Low-power transformer driver for isolated power supplies, functionally comparable and widely available in SOT-23.
  • ADM2483BRWZ --: Isolated power/signal solution often used in similar isolated interface applications; verify electrical specs before substitution.
  • DCP010505BP --: Isolated DC-DC converter module that can replace the MAX845-based isolated supply in many designs, simplifying the circuit.
  • LT1054CS8 --: Switched-capacitor voltage converter in an 8-pin SOIC package, functionally similar for low-power isolated supply applications.
  • TC7660EOA --: Charge-pump voltage converter in SOIC-8, widely available and suitable as a drop-in style replacement for small isolated bias supplies.
  • ICL7660AIBA --: Classic CMOS charge-pump converter in SOIC-8, low cost and commonly used for similar low-current voltage inversion/doubling needs.

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