DS1312E+

Controllers Overview

The DS1312E+ is a nonvolatile RAM controller IC in a 20-TSSOP package. It converts CMOS SRAM into nonvolatile memory by monitoring VCCI for out-of-tolerance conditions and automatically switching to a lithium battery backup supply upon power failure. The device operates within a voltage range of 4.75V to 5.5V and supports an industrial temperature range of -40°C to +85°C.

Controllers Feature Summary

• Converts standard CMOS SRAM into nonvolatile memory with automatic battery backup switching
• Monitors lithium cell voltage and signals low-battery conditions via an active-low output
• Unconditionally write-protects SRAM when the main power supply is out of tolerance

Controllers Applications

• Battery backup systems for volatile memory modules
• Lithium battery capacity monitoring applications
• Processor reset generation during power failures

Controllers Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices, as this specific part number may be discontinued. Ensure the ordering suffix matches the required package type and environmental rating before finalizing procurement.

Controllers Selection Notes

Select the DS1312E+ variant specifically for designs requiring a 20-pin TSSOP surface-mount package. Verify that the system logic levels are compatible with the specified input thresholds. Ensure the design accommodates the open-drain outputs for the Battery Warning and Reset signals by including appropriate external pull-up resistors.

Controllers Part Context

This component belongs to the DS1312 family of nonvolatile controllers manufactured by Analog Devices Inc./Maxim Integrated. The 'E+' suffix denotes the 20-pin TSSOP package configuration with lead-free/RoHS-compliant construction. It serves as a specialized interface between volatile memory and backup power sources.

Controllers Replacement Considerations

Consult official documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical specifications against alternative devices from the same manufacturer series.