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NMC27C256BQ-200

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
NMC27C256BQ-200,NMC27C256BQ200 NS 729 In Stock

Description and Introduction

200 ns, Vcc=5V+/-10%, 262,144-bit (32k x 8) high speed version UV erasable CMOS PROM The **NMC27C256BQ-200** 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. Operating at a **200ns access time**, this component is well-suited for systems demanding fast read operations while maintaining low power consumption.  

Built with **CMOS technology**, the NMC27C256BQ-200 offers enhanced power efficiency compared to traditional NMOS-based EPROMs. It features a **single 5V power supply**, simplifying integration into various digital systems. The device supports **standard microprocessor interfaces**, ensuring compatibility with a wide range of microcontrollers and logic circuits.  

The **UV-erasable** feature allows for multiple reprogramming cycles, making it ideal for development and prototyping environments. Data retention is robust, with specifications typically guaranteeing **decades of storage** under proper conditions.  

Packaged in a **ceramic windowed DIP (Dual In-Line Package)**, the NMC27C256BQ-200 facilitates easy erasure via ultraviolet light exposure. Its industrial-grade construction ensures durability in demanding applications.  

This EPROM is commonly used in **embedded systems, industrial controls, and legacy computing applications** where firmware or fixed data storage is required. Its balance of speed, reliability, and reprogrammability makes it a versatile choice for engineers working with older or specialized hardware architectures.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • M27C256B-20F1 --: Same 32K x 8 UV EPROM density and 200 ns access time in a comparable DIP package, widely available and pin-compatible.
  • AT27C256R-20PU --: 256Kbit OTP/EPROM with 200 ns speed and DIP-28 pinout, a common drop-in replacement for 27C256 devices.
  • TMS27C256-20JL --: Equivalent 256Kbit EPROM with 200 ns access time and standard JEDEC pinout, suitable as a functional substitute.
  • AM27C256-200DC --: Pin-compatible 256Kbit CMOS EPROM with 200 ns speed, well-established second source for the 27C256 family.

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