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MAX253EPA from MAXIM,MAXIM - Dallas Semiconductor

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MAX253EPA

Manufacturer: MAXIM, MAX

Transformer Driver for Isolated RS-485 Interface

Partnumber Manufacturer Quantity Availability
MAX253EPA MAXIM, MAX 2481 In Stock

Description and Introduction

Transformer Driver for Isolated RS-485 Interface The MAX253EPA is a transformer driver manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Voltage Range:** 4.5V to 5.5V  
- **Output Current:** Up to 350mA (peak)  
- **Switching Frequency:** Adjustable (external resistor/capacitor)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Primary Features:** Push-pull driver for center-tapped transformers  

### **Descriptions:**  
The MAX253EPA is a monolithic transformer driver designed for isolated power supply applications. It provides a high-efficiency push-pull output capable of driving center-tapped transformers. It is commonly used in isolated DC-DC converters, telecom power supplies, and industrial applications requiring galvanic isolation.  

### **Features:**  
- **Push-Pull Output:** Drives center-tapped transformers efficiently.  
- **Adjustable Frequency:** Allows customization via external components.  
- **Low Power Consumption:** Optimized for energy-efficient designs.  
- **Wide Input Voltage Range:** Supports 4.5V to 5.5V operation.  
- **Thermal Protection:** Includes thermal shutdown for safety.  
- **High Output Current:** Delivers up to 350mA peak current.  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

Transformer Driver for Isolated RS-485 Interface

Alternative Part Number

  • LT1073CN8 --: Pin-compatible isolated power supply transformer driver with similar switching topology and DIP-8 package, widely used as a MAX253 substitute.
  • SN6501DBVR --: Low-power transformer driver for isolated supplies with comparable function and voltage range, though in SOT-23 package requiring an adapter.
  • DCP010505BP --: Isolated DC-DC converter module that can replace the MAX253-based isolated supply function in many designs, offering integrated isolation.
  • SN6505BDBVR --: Higher-current transformer driver with similar push-pull topology and shutdown control, suitable as a drop-in functional replacement where more drive current is acceptable.
  • LT3439EFE --: Isolated push-pull transformer driver with comparable function and DIP/SOIC package options, usable as an alternative with minor circuit adjustment.

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