MXD1210CSA+T

Overview

The MXD1210CSA+T is a nonvolatile RAM controller manufactured by Analog Devices Inc. (formerly Maxim Integrated). It converts standard volatile CMOS RAM into nonvolatile memory by monitoring the power supply and providing write protection during marginal voltage conditions. The device switches to battery-backup mode when power fails. Key electrical parameters include a supply voltage range of 4.5V to 5.5V, an operating quiescent current of 230µA, and a backup mode quiescent current of 2nA. It operates within a temperature range of 0°C to +70°C and is housed in an 8-pin SOIC package.

Feature Summary

• Battery backup capability with low forward-voltage drop on the VCC supply switch
• Memory write protection that activates when power supply voltage becomes marginal
• Battery freshness seal feature that isolates batteries from the system during storage to preserve shelf life
• Optional redundant battery support for selecting the stronger battery source

Applications

• Microprocessor Systems
• Computers
• Embedded Systems

Procurement Notes

Verify the specific suffix 'CSA+T' corresponds to the lead-free 8-pin SOIC package variant intended for surface-mount assembly. Confirm the manufacturer designation as Analog Devices Inc., noting the historical integration of Maxim Integrated products. Ensure compatibility with the required 0°C to +70°C commercial temperature grade for the target application environment.

Selection Notes

Select this component when converting volatile CMOS RAM to nonvolatile memory is required without complex interface logic. Consider the 230µA operating current and 2nA backup current for low-power designs. Evaluate the need for battery redundancy or freshness-seal features based on system maintenance requirements and expected inventory storage durations.

Part Context

The MXD1210 series includes variants such as the MXD1210CPA (PDIP) and MXD1210EWE (Wide SO), offering different packages and extended temperature ranges (-40°C to +85°C). The CSA+T suffix specifically denotes the lead-free 8-pin Small Outline package suitable for automated surface-mount production lines.

Replacement Considerations

Direct pin-compatible replacements within the same family include MXD1210ESA for extended temperature ranges. Verify if the application requires the specific 2nA backup current or if higher leakage in other variants is acceptable.