DS1314S-2+T&R/C04

Controllers Overview

The DS1314S-2+T&R/C04 is a CMOS nonvolatile memory controller designed to convert standard CMOS SRAM into nonvolatile storage. It operates within an industrial temperature range of -40°C to +85°C and utilizes an 8-pin SOIC package. The device supports supply voltages from 3.0V to 3.6V when the TOL pin is grounded, or 2.7V to 3.3V when connected to VCCO. It features automatic power-fail detection, battery backup switching with less than 0.2V drop, and lithium cell monitoring via a periodic 24-hour test cycle.

Controllers Feature Summary

• Converts CMOS SRAM into nonvolatile memory by automatically managing power sources
• Unconditionally write-protects SRAM when system voltage falls out of tolerance
• Monitors lithium battery capacity and signals low-battery conditions via open-drain output
• Includes processor reset functionality during power failure and system power-up

Controllers Applications

• Battery-backed SRAM modules in embedded systems
• Data retention circuits for microprocessor-based applications
• Industrial control systems requiring reliable nonvolatile storage
• Equipment needing advanced warning of impending battery failure

Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to limited availability status. Confirm RoHS compliance requirements match the specific suffix designation. Ensure ordering documentation explicitly references the 8-pin SOIC package variant. Validate that the intended application environment remains within the specified -40°C to +85°C operating temperature range before finalizing procurement decisions.

Controllers Selection Notes

Select this controller for designs requiring precise voltage detection at extremely low battery consumption. Choose the 8-pin SOIC version for space-constrained surface-mount layouts. Consider the optional reset feature if processor protection during power transients is required. Evaluate the 24-hour battery testing interval against system power-down durations to ensure effective end-of-life warnings are generated.

Controllers Part Context

This component belongs to the DS1314 family of nonvolatile controllers manufactured by Analog Devices under the Maxim Integrated brand. The series includes variants such as the 16-pin SOIC and 20-pin TSSOP packages. These devices share core functionalities including power-fail detection and battery monitoring but differ in pin counts and additional reset capabilities depending on the specific package configuration selected.

Controllers Replacement Considerations

Direct substitutes include other members of the DS1314 family, such as the DS1314S (16-pin) or DS1314E (20-pin), provided pin compatibility and reset requirements align with the design. Verify that any replacement maintains the same 8-pin SOIC footprint and electrical characteristics for seamless integration.