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M54521P from MIT

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M54521P

Manufacturer: MIT

5-UNIT 500MA DARLINGTON TRANSISTOR ARRAY

Partnumber Manufacturer Quantity Availability
M54521P MIT 127 In Stock

Description and Introduction

5-UNIT 500MA DARLINGTON TRANSISTOR ARRAY The part **M54521P** is a **stepper motor driver IC** manufactured by **MIT (Mitsubishi Electric)**.  

### **Specifications:**  
- **Type:** Unipolar stepper motor driver  
- **Output Current:** Up to 500mA per phase  
- **Supply Voltage (VCC):** 4.5V to 16V  
- **Logic Voltage (VDD):** 4.5V to 5.5V  
- **Number of Phases:** 2-phase  
- **Package:** DIP-16 (Plastic Dual Inline Package)  
- **Operating Temperature Range:** -20°C to +75°C  

### **Descriptions and Features:**  
- Designed for driving **unipolar stepper motors** with **built-in protection diodes**.  
- Includes **internal clamp diodes** for inductive load protection.  
- Features **two-phase excitation drive** for stepper motor control.  
- Compatible with **TTL and CMOS logic levels** for easy interfacing with microcontrollers.  
- Provides **high noise immunity** and **thermal shutdown protection**.  
- Suitable for applications like **printers, robotics, and automation systems**.  

This IC simplifies stepper motor control by integrating necessary drive circuitry into a single chip.

Application Scenarios & Design Considerations

5-UNIT 500MA DARLINGTON TRANSISTOR ARRAY

Alternative Part Number

  • ULN2003A --: Seven-channel Darlington sink driver in a DIP-16 package, functionally similar to the M54521P and widely available from multiple vendors.
  • MC1413BDG --: Seven-channel Darlington array with high-voltage/high-current outputs, a common drop-in replacement for Mitsubishi M545xx series drivers.
  • TD62003APG --: Seven-channel Darlington transistor array in DIP-16, pin-compatible with the M54521P and rated for similar load currents.

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