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NM27C256V-150 from NATIONAL,National Semiconductor

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NM27C256V-150

Manufacturer: NATIONAL, NS

256K-Bit (32K x 8) High Performance CMOS EPROM

Partnumber Manufacturer Quantity Availability
NM27C256V-150,NM27C256V150 NATIONAL, NS 394 In Stock

Description and Introduction

256K-Bit (32K x 8) High Performance CMOS EPROM The **NM27C256V-150** is a high-performance **32K x 8-bit UV-erasable and electrically programmable read-only memory (EPROM)**. Designed for applications requiring non-volatile storage, this component offers reliable data retention and fast access times, making it suitable for embedded systems, industrial controls, and legacy computing applications.  

With a **150ns access time**, the NM27C256V-150 ensures efficient data retrieval, supporting seamless integration into systems where speed is critical. It operates on a **single 5V power supply**, simplifying power management in circuit designs. The EPROM features a **wide temperature range**, ensuring stable performance in varying environmental conditions.  

The NM27C256V-150 is **UV-erasable**, allowing for multiple reprogramming cycles, which enhances flexibility during development and testing. Its **28-pin DIP (Dual In-line Package)** provides a robust and industry-standard form factor, ensuring compatibility with existing hardware designs.  

Key applications include firmware storage, microcontroller-based systems, and retro computing projects where durable, reprogrammable memory is essential. Its reliability and performance make it a trusted choice for engineers working with legacy or specialized electronic systems.  

For optimal performance, proper handling and adherence to datasheet specifications—such as UV exposure timing and programming voltage—are recommended.

Application Scenarios & Design Considerations

256K-Bit (32K x 8) High Performance CMOS EPROM

Alternative Part Number

  • M27C256B-15F1 --: 256Kbit UV EPROM with 150ns access time, pin-compatible DIP-28 pinout and same 5V Vpp programming, direct functional replacement.
  • AT27C256R-15PC --: 256Kbit OTP/UV EPROM, 150ns speed grade, standard 28-pin DIP pinout compatible with the NM27C256V.
  • TMS27C256-15JL --: 256Kbit EPROM with 150ns access time and JEDEC 28-pin pinout, suitable drop-in substitute for the National device.
  • AT27C256R-15PU --: Equivalent 256Kbit OTP EPROM with 150 ns speed in PDIP-28, a common drop-in replacement from a different manufacturer family.
  • AM27C256-150DC --: Drop-in 256Kbit CMOS EPROM with 150ns access time and identical DIP-28 pinout, suitable as a functional substitute.

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