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MX27C256PC-90 from MXIC,MAXIM - Dallas Semiconductor

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MX27C256PC-90

Manufacturer: MXIC, MX

256K-BIT [32K x 8] CMOS EPROM

Partnumber Manufacturer Quantity Availability
MX27C256PC-90,MX27C256PC90 MXIC, MX 1430 In Stock

Description and Introduction

256K-BIT [32K x 8] CMOS EPROM # Introduction to the MX27C256PC-90  

The **MX27C256PC-90** is a high-performance **256K-bit (32K x 8) UV-erasable programmable read-only memory (EPROM)** designed for applications requiring non-volatile data storage. With a fast **90ns access time**, this component is well-suited for embedded systems, industrial controls, and legacy computing applications where reliable firmware storage is essential.  

Featuring a **single 5V power supply**, the MX27C256PC-90 offers low power consumption while maintaining robust performance. Its **UV-erasable** nature allows for multiple reprogramming cycles, making it ideal for development and prototyping. The device supports a standard **parallel interface**, ensuring compatibility with a wide range of microprocessors and microcontrollers.  

Key specifications include a **wide operating temperature range**, ensuring stability in harsh environments, and a **JEDEC-standard pinout** for easy integration into existing designs. The MX27C256PC-90 is housed in a **28-pin plastic DIP (Dual In-line Package)**, a common form factor for legacy systems.  

While newer flash memory technologies have largely replaced EPROMs in modern designs, the MX27C256PC-90 remains a reliable choice for applications requiring long-term data retention and reprogrammability. Its proven performance and durability make it a trusted component in various industrial and embedded systems.

Application Scenarios & Design Considerations

256K-BIT [32K x 8] CMOS EPROM

Alternative Part Number

  • AT27C256R-90PU --: Direct functional equivalent 256Kb (32K x 8) OTP EPROM with 90ns access time in a 28-pin DIP package, widely available and pin-compatible.
  • M27C256B-90B6 --: 256Kb UV EPROM with 90ns speed and standard 28-pin DIP pinout, a well-established drop-in replacement for the MX27C256 series.
  • W27C256-90 --: 256Kb CMOS EPROM with 90ns access time and compatible 28-pin DIP pinout, offering similar read timing and interface characteristics.

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