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TLP554 from TOS,TOSHIBA

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TLP554

Manufacturer: TOS

PHOTOCOUPLER GaAlAs IRED & PHOTO-IC

Partnumber Manufacturer Quantity Availability
TLP554 TOS 602 In Stock

Description and Introduction

PHOTOCOUPLER GaAlAs IRED & PHOTO-IC The TLP554 is an optocoupler manufactured by Toshiba. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:** Toshiba  
### **Part Number:** TLP554  

### **Description:**  
The TLP554 is a high-speed photocoupler (optocoupler) that consists of a GaAlAs light-emitting diode (LED) optically coupled to a high-speed integrated photodetector. It is designed for high-speed digital signal transmission while providing electrical isolation between circuits.  

### **Key Features:**  
- **High-speed response:** Typical propagation delay time (tPLH) of 0.5 µs.  
- **High isolation voltage:** 3750 Vrms (min).  
- **Low input current:** Forward current (IF) of 5 mA (max).  
- **Compact package:** 6-pin DIP (Dual In-line Package).  
- **Wide operating temperature range:** -40°C to +85°C.  
- **Open-collector output:** Compatible with TTL and CMOS logic levels.  

### **Applications:**  
- Digital signal isolation in industrial equipment.  
- Microprocessor system interfaces.  
- Power supply feedback circuits.  
- Noise immunity in communication systems.  

For detailed electrical characteristics and performance graphs, refer to the official Toshiba datasheet.

Application Scenarios & Design Considerations

PHOTOCOUPLER GaAlAs IRED & PHOTO-IC

Alternative Part Number

  • HCPL-4504 --: Industry-standard high-speed optocoupler with similar CTR and isolation ratings, widely used as a direct functional replacement for the TLP554.
  • PC817 --: Very common general-purpose phototransistor optocoupler with comparable isolation voltage and CTR, suitable for lower-speed signal isolation applications.
  • LTV-554 --: Pin-compatible dual-channel phototransistor optocoupler offering similar isolation and transfer characteristics at lower cost.

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