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TLP291-4 from TOSHIBA

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TLP291-4

Manufacturer: TOSHIBA, TOS

Photocoupler (phototransistor output)

Partnumber Manufacturer Quantity Availability
TLP291-4,TLP2914 TOSHIBA, TOS 224 In Stock

Description and Introduction

Photocoupler (phototransistor output) The TLP291-4 is a photocoupler manufactured by Toshiba. Here are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Type:** Photocoupler (Optocoupler)  
- **Number of Channels:** 4  
- **Isolation Voltage:** 3750 Vrms (min)  
- **Input Current (IF):** 5 mA (typical)  
- **Output Type:** Phototransistor  
- **Collector-Emitter Voltage (VCEO):** 80 V (max)  
- **Current Transfer Ratio (CTR):** 50% (min) at IF = 5 mA  
- **Operating Temperature Range:** -55°C to +110°C  
- **Package Type:** SO16 (Surface Mount)  

### **Descriptions:**  
- The TLP291-4 consists of four independent photocouplers in a single package.  
- Each channel includes a GaAs infrared LED optically coupled to a phototransistor.  
- Designed for high-speed logic interfacing and noise isolation in digital circuits.  

### **Features:**  
- **High Isolation Voltage:** 3750 Vrms ensures strong electrical isolation.  
- **Compact Design:** Four channels in a single SO16 package save board space.  
- **Low Input Current:** Operates efficiently with low driving current.  
- **Wide Operating Temperature:** Suitable for industrial and automotive applications.  
- **Lead-Free & RoHS Compliant:** Meets environmental standards.  

This information is based solely on the manufacturer's datasheet for the TLP291-4.

Application Scenarios & Design Considerations

Photocoupler (phototransistor output)

Alternative Part Number

  • PC817 --: Industry-standard general-purpose optocoupler with similar CTR and isolation ratings, widely available and often used as a direct replacement in multi-channel designs.
  • LTV-847 --: Quad-channel optocoupler in a DIP-16 package, functionally equivalent to the TLP291-4 for multi-channel isolation applications.
  • EL817 --: Low-cost single-channel optocoupler with comparable electrical characteristics; multiple units can replace the quad-channel TLP291-4 where board space allows.

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