DS1254YB-100

Overview

The DS1254YB-100 is a nonvolatile static RAM (NV SRAM) integrated with a real-time clock (RTC), organized as 2M words by 8 bits. It operates on a +5V supply and features a phantom clock for timekeeping without external components. The device includes automatic data protection during power failures, unlimited write-cycle endurance, and battery monitoring via an attached DS3800 cap. It supports 12/24-hour formats, leap year compensation, and provides a battery warning output.

Feature Summary

• 2M x 8 NV SRAM with built-in phantom RTC
• Automatic data protection during power loss
• Unlimited write-cycle endurance
• Battery monitoring and warning output

Applications

• Telecom switches
• RAID systems

Procurement Notes

Verify the specific ordering suffix to confirm voltage range and package type. Confirm compatibility with the required DS3800 battery cap for battery backup functionality. Check for any known errata associated with this revision before finalizing procurement.

Selection Notes

Select the DS1254YB-100 for applications requiring large nonvolatile memory with precise timekeeping. Ensure the system design accommodates the 168-ball BGA package and provides adequate space for the DS3800 battery cap attachment.

Part Context

This component belongs to the DS1254 series of NV SRAMs with phantom clocks. It is designed for surface-mount applications and offers high-density storage combined with real-time clock capabilities in a single package.

Replacement Considerations

Direct substitutes include other parts within the DS1254 family, such as the DS1254WB-150 or DS1254WB2-150, which offer similar functionality but operate at a +3.3V supply voltage instead of +5V.