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IL74 from VISHAY

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IL74

Manufacturer: VISHAY, SIEMENS

PHOTOTRANSISTOR OPTOCOUPLER

Partnumber Manufacturer Quantity Availability
IL74 VISHAY, SIEMENS 9843 In Stock

Description and Introduction

PHOTOTRANSISTOR OPTOCOUPLER The IL74 is a high-speed optocoupler manufactured by **VISHAY**. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Isolation Voltage:** 3750 Vrms  
- **Input Current (IF):** 10 mA (typical)  
- **Output Voltage (VCE):** 30 V (max)  
- **Collector Current (IC):** 8 mA (max)  
- **Current Transfer Ratio (CTR):** 20% (min) at IF = 10 mA  
- **Switching Speed (tPLH, tPHL):** 3 µs (typical)  
- **Operating Temperature Range:** -55°C to +100°C  

### **Description:**  
- The **IL74** is a **phototransistor optocoupler** designed for high-speed digital signal isolation.  
- It consists of an **infrared LED** optically coupled to a **silicon phototransistor** in a compact 6-pin DIP package.  
- Suitable for applications requiring electrical isolation and noise immunity.  

### **Features:**  
- **High-speed switching** (3 µs typical propagation delay).  
- **Wide operating temperature range** (-55°C to +100°C).  
- **High isolation voltage** (3750 Vrms).  
- **Low input current requirement** (10 mA typical).  
- **Compact DIP package** for easy PCB mounting.  

This information is strictly based on the manufacturer's datasheet and knowledge base.

Application Scenarios & Design Considerations

PHOTOTRANSISTOR OPTOCOUPLER

Alternative Part Number

  • SFH615A-2 --: Industry-standard optocoupler with similar CTR and isolation ratings, widely available and pin-compatible in most IL74 sockets.
  • PC817 --: Very common general-purpose optocoupler with comparable current transfer ratio and isolation voltage, easy drop-in replacement.
  • LTV-817 --: Cost-effective optocoupler equivalent to PC817 with similar electrical characteristics and pinout, suitable for most IL74 applications.
  • SFH618A-2 --: Phototransistor optocoupler with similar CTR and isolation ratings, widely available and pin-compatible in many IL74 sockets.
  • TLP521-1 --: Single-channel phototransistor optocoupler with similar input/output characteristics and isolation, suitable as a functional substitute.

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