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HM51258P-8 from HIT

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HM51258P-8

Manufacturer: HIT, HITACHI, HITACHI

262,144-word x 1-bit Static Column CMOS Dynamic RAM

Partnumber Manufacturer Quantity Availability
HM51258P-8,HM51258P8 HIT, HITACHI, HITACHI 21919 In Stock

Description and Introduction

262,144-word x 1-bit Static Column CMOS Dynamic RAM The **HM51258P-8** is a high-performance **64K x 8-bit static random-access memory (SRAM)** integrated circuit designed for applications requiring fast, reliable data storage and retrieval. This CMOS-based SRAM operates at **5V** and features a **55ns access time**, making it suitable for embedded systems, industrial controls, and computing peripherals where speed and low power consumption are critical.  

With a **standby current** as low as **10µA**, the HM51258P-8 is optimized for power-sensitive applications while maintaining robust performance. Its **8-bit parallel interface** ensures seamless integration with microprocessors and microcontrollers, simplifying system design. The device also includes **asynchronous operation**, eliminating the need for complex clock synchronization.  

Housed in a **28-pin DIP (Dual Inline Package)**, the HM51258P-8 offers durability and ease of use in prototyping and production environments. Its **non-volatile data retention** ensures stability even during power fluctuations, making it a dependable choice for mission-critical systems.  

Engineers and designers favor this SRAM for its balance of **speed, power efficiency, and reliability**, making it a versatile solution across various industries, from telecommunications to automotive electronics. Its straightforward architecture and compatibility with legacy systems further enhance its appeal in both modern and retro applications.

Application Scenarios & Design Considerations

262,144-word x 1-bit Static Column CMOS Dynamic RAM

Alternative Part Number

  • IS61C256AH-15N --: 32K x 8 high-speed CMOS SRAM with similar 8-bit parallel interface and 5V operation, widely available and pin-compatible in most designs.
  • CY7C199-15PC --: 32K x 8 asynchronous SRAM with comparable access time and 5V TTL-compatible I/O, a common drop-in replacement for legacy 32Kx8 SRAMs.
  • AS6C62256-55PCN --: 32K x 8 low-power CMOS SRAM in a standard DIP package, suitable as a functional substitute when timing is not critical.
  • CY7C128A-25PC --: Pin-compatible 2K x 8 asynchronous static RAM with similar 25 ns access time, widely available and a common drop-in replacement for the HM51258P-8.
  • IS61C1024-25N --: Low-power CMOS SRAM with comparable organization and speed grade, offered by a vendor known for legacy SRAM replacements.
  • IS61C256AH-20N --: 32K x 8 high-speed SRAM in a similar DIP package with comparable access time, offered by a vendor known for legacy SRAM replacements.

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