The DS55464H/883 is a radiation-hardened, high-speed, 64K x 1 CMOS static RAM (SRAM) manufactured by National Semiconductor, now a part of Texas Instruments (TI). This SRAM is specifically designed for use in harsh environments where radiation exposure is a concern, making it suitable for aerospace, military, and other high-reliability applications. Its combination of high speed and radiation hardness makes it a critical component in systems requiring robust memory performance.

Applications:

• Aerospace Systems: Used in satellite systems, spacecraft computers, and avionics where radiation tolerance is essential.
• Military Systems: Employed in military communication systems, missile guidance systems, and radar systems operating in radiation-prone environments.
• Nuclear Instrumentation: Utilized in nuclear power plants and research facilities for data logging and control systems.
• High-Reliability Computing: Integrated into critical systems requiring high levels of data integrity and resistance to radiation-induced errors.
• Data Acquisition Systems: Used in high-speed data acquisition systems where radiation may be present.

Features:

• Radiation Hardened: Designed to withstand high levels of radiation exposure without significant performance degradation.
• High Speed: Offers fast access times for quick data read and write operations.
• 64K x 1 Organization: Provides a memory capacity of 64 kilobits organized as a single bit per address.
• CMOS Technology: Utilizes CMOS technology for low power consumption.
• Single 5V Power Supply: Operates from a single 5-volt power supply.
• TTL Compatibility: Compatible with TTL logic levels for easy integration with other digital circuits.
• Hermetic Package: Typically packaged in a hermetically sealed package for enhanced reliability.

Benefits:

• Reliable Operation in Harsh Environments: Ensures data integrity and system functionality in radiation-prone conditions.
• Fast Data Access: Enables quick data retrieval and storage, improving system responsiveness.
• Low Power Consumption: Reduces overall system power requirements, extending battery life in portable applications.
• Easy Integration: TTL compatibility simplifies interfacing with existing digital systems.
• Enhanced System Reliability: Hermetic packaging protects the device from environmental factors, increasing its lifespan.

Additional Details:

The DS55464H/883 is typically available in ceramic DIP or flatpack packages. The radiation hardness is usually specified in terms of total ionizing dose (TID) and single-event upset (SEU) immunity. Refer to the TI datasheet for detailed specifications, including access times, power consumption, operating temperature range, and radiation performance characteristics. This SRAM is a critical component for applications where reliability and data integrity are paramount in the presence of radiation.