DS1312S-2

Controllers Overview

The DS1312S-2+ is a nonvolatile SRAM controller in an 8-pin SOIC package. It operates with a supply voltage range of 4.5V to 5.5V and supports an industrial temperature range from -40°C to +85°C. The device features a battery backup switch with less than 0.2V drop, unconditionally write-protects SRAM during power failures, and monitors lithium cell voltage for low-battery warnings.

Controllers Feature Summary

• Converts CMOS SRAM into nonvolatile memory by automatically switching to battery backup upon power failure
• Unconditionally write-protects SRAM when the main supply voltage is out of tolerance
• Monitors lithium battery voltage and signals impending failure via an active-low output
• Includes optional reset functionality to hold the processor in reset during system power-up

Controllers Applications

• Battery-backed SRAM modules requiring data retention
• Systems needing advanced warning of lithium battery depletion
• Processor-based systems requiring power-fail detection and reset generation

Controllers Procurement Notes

Verify the specific suffix matches the required pinout and package dimensions. Confirm RoHS compliance status if environmental regulations apply. Ensure the selected version aligns with the necessary reset or tolerance configurations for the target application design.

Controllers Selection Notes

Select this component for applications requiring precise voltage monitoring and seamless SRAM backup. Consider the 8-pin SOIC form factor for space-constrained designs. Evaluate the need for the reset feature versus simpler control requirements to optimize bill of materials.

Controllers Part Context

This part belongs to the DS1312 family of nonvolatile controllers. Variants include 8-pin DIP, 16-pin SOIC, and 20-pin TSSOP packages. The family provides consistent core functionality across different physical footprints to support various board layout requirements.

Controllers Replacement Considerations

Direct substitutes within the same family include the DS1312+ (8-pin DIP) and DS1312S+ (16-pin SOIC). Verify pin compatibility and package dimensions before substitution.