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PC8477BV-1 from NS,National Semiconductor

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PC8477BV-1

Manufacturer: NS, NSC

Advanced Floppy Disk Controller

Partnumber Manufacturer Quantity Availability
PC8477BV-1,PC8477BV1 NS, NSC 2491 In Stock

Description and Introduction

Advanced Floppy Disk Controller The **PC8477BV-1** from **National Semiconductor** is a high-performance optocoupler designed to provide reliable signal isolation in electronic circuits. This component integrates a high-speed **phototransistor** coupled with an **infrared LED**, ensuring efficient electrical isolation between input and output stages while maintaining signal integrity.  

With a **minimum isolation voltage** of 2500Vrms, the PC8477BV-1 is well-suited for applications requiring robust noise immunity and safety compliance, such as industrial controls, power supplies, and communication interfaces. Its **fast switching speed** and **low propagation delay** make it ideal for digital signal transmission in environments with high electromagnetic interference.  

The device operates over a **wide temperature range**, ensuring stable performance in demanding conditions. Its compact **DIP-4 package** facilitates easy integration into various circuit designs while maintaining high reliability.  

Key features include **high current transfer ratio (CTR)**, low power consumption, and compatibility with standard logic levels, making the PC8477BV-1 a versatile choice for designers seeking dependable galvanic isolation. Whether used in motor drives, medical equipment, or automation systems, this optocoupler delivers consistent performance while meeting stringent safety and efficiency requirements.  

National Semiconductor's legacy of precision engineering ensures that the PC8477BV-1 remains a trusted solution for isolation challenges in modern electronics.

Application Scenarios & Design Considerations

Advanced Floppy Disk Controller

Alternative Part Number

  • LTV-847 --: Quad optocoupler in DIP-16 with similar CTR and isolation ratings, a common drop-in replacement for the PC847 series.
  • TLP847 --: Quad-channel phototransistor optocoupler matching the PC847 pinout and isolation voltage, widely used as a direct substitute.
  • HCPL-847 --: Quad optocoupler with comparable CTR and 5 kV isolation, suitable alternative when the original NS part is unavailable.
  • TLP521-4 --: Quad-channel optocoupler with similar CTR and isolation ratings, widely used as a direct replacement for PC847-series devices.
  • PC817 --: Single-channel optocoupler from a different series with comparable forward current and isolation voltage, suitable for equivalent circuit positions.
  • LTV-847 --: Quad optocoupler pin-compatible with PC847 family, offering similar CTR ranges and isolation performance at lower cost.

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