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NMC27C256BQ-250 from NSC,National Semiconductor

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NMC27C256BQ-250

Manufacturer: NSC

250 ns, Vcc=5V+/-10%, 262,144-bit (32k x 8) high speed version UV erasable CMOS PROM

Partnumber Manufacturer Quantity Availability
NMC27C256BQ-250,NMC27C256BQ250 NSC 1 In Stock

Description and Introduction

250 ns, Vcc=5V+/-10%, 262,144-bit (32k x 8) high speed version UV erasable CMOS PROM **Introduction to the NMC27C256BQ-250**  

The **NMC27C256BQ-250** is a high-performance **256K-bit (32K x 8) UV-erasable programmable read-only memory (EPROM)** designed for applications requiring reliable, non-volatile data storage. With a fast **250 ns access time**, this component ensures efficient operation in systems where speed and data integrity are critical.  

Featuring a **single 5V power supply**, the NMC27C256BQ-250 simplifies system design while maintaining low power consumption. Its **JEDEC-standard pinout** ensures compatibility with industry-standard EPROMs, making it a versatile choice for upgrades or replacements in legacy systems. The device supports **standard programming modes**, allowing easy integration into development and production environments.  

The **UV-erasable** nature of this EPROM enables multiple reprogramming cycles, making it suitable for prototyping and firmware updates. Its **wide operating temperature range** ensures reliable performance in various industrial and commercial applications.  

Encased in a **ceramic DIP package**, the NMC27C256BQ-250 offers durability and excellent thermal characteristics. Whether used in embedded systems, telecommunications, or industrial controls, this EPROM provides a dependable solution for non-volatile memory needs.  

For engineers and designers seeking a robust, high-speed EPROM, the NMC27C256BQ-250 remains a trusted option in memory technology.

Application Scenarios & Design Considerations

250 ns, Vcc=5V+/-10%, 262,144-bit (32k x 8) high speed version UV erasable CMOS PROM

Alternative Part Number

  • M27C256B-25F1 --: Pin-compatible 256Kbit UV EPROM with 250ns access time, direct functional replacement for the NSC device.
  • AM27C256-250DC --: Equivalent 32K x 8 CMOS EPROM with 250ns speed grade and matching DIP pinout, widely available second source.
  • TMS27C256-25JL --: 256Kbit EPROM with 250ns access time and compatible pinout, suitable as an alternative when NSC parts are unavailable.

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