Maxim Integrated DS1249Y-85IND Nonvolatile RAM

The DS1249Y-85IND from Maxim Integrated is a high-quality, 4Mbit nonvolatile memory module that combines the convenience of a fast SRAM with the data retention capabilities of nonvolatile memory. This robust product is specifically designed to endure industrial temperature ranges, making it a reliable choice for demanding applications that require data preservation even after power loss.

One of the key features of the DS1249Y-85IND is its integrated battery, which ensures that the memory contents are preserved for over 10 years in the absence of power. This makes it an ideal solution for critical data storage in systems where long-term reliability is paramount. The device operates with a supply voltage range of 4.5V to 5.5V, which is typical for 5V systems, and its access time of 85ns allows for high-speed data retrieval, which is crucial for performance-sensitive applications.

This nonvolatile RAM is organized as 512K x 8, providing a substantial amount of storage space for a wide array of data types. It features an automatic power-fail chip deselect and write-protection circuitry, which guarantees that data integrity is maintained during any unexpected power outages. The DS1249Y-85IND also includes a precision voltage-reference and a voltage-compare circuit to monitor VCC. When VCC falls below the minimum VCC trip point, the write-protection is enabled, and the device switches to the battery supply to maintain data integrity.

The industrial temperature rating of the DS1249Y-85IND, which ranges from -40°C to +85°C, ensures that the device can withstand extreme environmental conditions, making it suitable for industrial control systems, portable computing devices, telecommunications equipment, and other applications where the operating temperature can vary significantly.

In summary, the DS1249Y-85IND from Maxim Integrated is a robust, nonvolatile memory module that offers high-speed data access, long-term data retention, and industrial-grade durability. It is an excellent choice for designers looking to incorporate reliable data storage into their systems without compromising on performance or data integrity.