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STV8257DSX from ST,ST Microelectronics

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STV8257DSX

Manufacturer: ST, STM

Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

Partnumber Manufacturer Quantity Availability
STV8257DSX ST, STM 2348 In Stock

Description and Introduction

Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders The STV8257DSX is a high-voltage deflection processor IC manufactured by STMicroelectronics.  

### **Specifications:**  
- **Supply Voltage:** 9V to 16V  
- **Horizontal Drive Output:** Capable of driving an external transistor  
- **Vertical Drive Output:** Linear sawtooth output for vertical deflection  
- **Protection Features:** Thermal shutdown, overvoltage protection  
- **Package:** DIP-16 (Dual In-line Package)  

### **Descriptions:**  
The STV8257DSX is designed for CRT (Cathode Ray Tube) deflection systems in televisions and monitors. It integrates horizontal and vertical deflection control functions, reducing external component count.  

### **Features:**  
- **Horizontal Section:**  
  - Built-in oscillator with PLL (Phase-Locked Loop) synchronization  
  - Soft start and shutdown  
  - X-ray protection  
- **Vertical Section:**  
  - Adjustable vertical amplitude and linearity  
  - DC-coupled vertical output  
  - Vertical blanking pulse generation  
- **Low Power Consumption:** Optimized for energy efficiency  

This IC is primarily used in analog CRT display systems for deflection control.

Application Scenarios & Design Considerations

Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

Alternative Part Number

  • TDA8257DSX --: Same ST video/deflection processing family with equivalent DSX package and function, direct drop-in replacement.
  • LA7851 --: Similar CRT deflection/video signal processing IC used in comparable monitor designs, functionally compatible with minor circuit adjustment.
  • TDA9112 --: Deflection and video processing controller covering similar monitor applications, usable as alternative with pinout verification.
  • TDA8257 --: Same TV vertical deflection/audio processing family with comparable functionality and pinout, widely used as a direct substitute in CRT TV chassis.
  • LA7845 --: Vertical deflection output IC with similar voltage and current ratings, commonly used as a cross-reference replacement in television deflection circuits.
  • TDA8177 --: Vertical deflection booster IC with comparable output capability, frequently substituted in similar TV deflection applications.

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