DS1312S-2+T&R

Controllers Overview

The DS1312S-2+T&R is a nonvolatile RAM controller with battery monitor in an 8-pin SOIC package. It converts CMOS SRAM into nonvolatile memory by monitoring VCCI for out-of-tolerance conditions and automatically switching to a lithium backup supply upon power failure. The device provides unconditionally write-protected SRAM during power loss and monitors the battery voltage to signal impending failure via an open-drain Battery Warning output. Operating temperature range is -40°C to +85°C.

Controllers Feature Summary

• Converts standard CMOS SRAM into nonvolatile memory through automatic power management
• Unconditionally inhibits chip enable to protect data when system power is out of tolerance
• Monitors lithium cell voltage under load to provide advanced warning of end-of-life
• Includes optional processor reset functionality to hold the system in reset during power-up

Controllers Applications

• Battery-backed SRAM modules requiring data retention
• Systems needing low-leakage CMOS battery monitoring
• Processor-based designs requiring power-fail detection and reset signals

Controllers Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers multiple form factors. Confirm RoHS compliance status based on the '+' designation in the final part code. Ensure the tape and reel packaging aligns with automated assembly requirements. Cross-reference the manufacturer's latest datasheet revision to confirm pinout consistency before integration.

Controllers Selection Notes

Select this component when converting volatile SRAM to nonvolatile storage is required without complex external circuitry. The 8-pin SOIC variant is suitable for space-constrained surface-mount applications. Consider the 16-pin or 20-pin versions if processor reset outputs are necessary alongside battery monitoring. Verify that the operating voltage range meets the system's nominal supply specifications.

Controllers Part Context

This component belongs to the DS1312 family of nonvolatile controllers manufactured by Analog Devices Inc./Maxim Integrated. The family includes variants in DIP, SOIC, and TSSOP packages. The 'S' indicates the SOIC package style, while '-2' specifies the 8-pin configuration. The '+T&R' suffix denotes lead-free/RoHS compliance and tape-and-reel packaging.

Controllers Replacement Considerations

DS1312+