DS1222S

Controllers Overview

The DS1222S is a static RAM memory controller IC manufactured by Analog Devices Inc./Maxim Integrated. It is designed for surface mount installation and utilizes a 16-SOIC package with a width of 0.295 inches (7.50mm). The component serves as a nonvolatile SRAM controller, integrating battery backup switching capabilities to maintain data integrity during power transitions. This specific part number is classified as obsolete and is no longer in active manufacturing.

Controllers Feature Summary

• Integrates nonvolatile SRAM control logic with battery backup switching functionality
• Designed for surface mount technology using a standard 16-SOIC footprint
• Provides hardware-level management for maintaining system data during power loss events

Controllers Applications

• Embedded systems requiring persistent data storage without external microcontroller intervention
• Industrial control units needing reliable nonvolatile memory management
• Legacy computer architectures utilizing SRAM-based buffer memory

Controllers Procurement Notes

This component is officially listed as obsolete and is no longer manufactured by Analog Devices Inc./Maxim Integrated. Procurement is restricted to the secondary market or surplus inventory channels. Verify RoHS compliance status carefully, as historical documentation indicates this specific suffix may be non-compliant with current environmental regulations. Ensure compatibility with existing PCB footprints before sourcing from third-party distributors.

Controllers Selection Notes

Designers should consider that the DS1222S is an end-of-life product. Modern alternatives typically offer enhanced integration, lower power consumption, and broader voltage ranges. Evaluate replacement controllers that support similar 16-pin SOIC packages to minimize redesign efforts. Confirm that substitute components provide equivalent battery backup switching thresholds and timing characteristics required by the target application's power management scheme.

Controllers Part Context

The DS1222S belongs to the DS1222 family of memory controllers produced by Maxim Integrated, now part of Analog Devices. These devices were widely used in embedded applications prior to the prevalence of flash-based nonvolatile solutions. The 'S' suffix denotes the surface mount package variant. The series was engineered to simplify the interface between processors and volatile SRAM while ensuring data retention through integrated battery management circuits.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.