DS1314E+T&R

Controllers Overview

The DS1314E+T&R is a nonvolatile memory controller IC manufactured by Analog Devices Inc./Maxim Integrated. It converts CMOS SRAM into nonvolatile memory and includes a lithium battery monitor. The device operates within an industrial temperature range of -40°C to +85°C and utilizes a 20-pin TSSOP package. It 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. Key features include automatic power-fail detection, write protection, and battery warning signaling.

Controllers Feature Summary

• Converts standard CMOS SRAM into nonvolatile memory with seamless battery backup support
• Monitors lithium cell voltage and signals impending battery failure via an active-low output
• Automatically switches to battery backup and inhibits chip enable during power failures

Controllers Applications

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

Controllers Procurement Notes

Verify the specific package variant matches the design requirement, as the DS1314 family includes 8-pin DIP, 8-pin SOIC, 16-pin SOIC, and 20-pin TSSOP options. Confirm that the ordering suffix corresponds to the desired tape-and-reel configuration for automated assembly processes. Ensure compatibility with the target system's voltage levels and temperature specifications before finalizing procurement.

Controllers Selection Notes

Select the DS1314E+T&R when a 20-pin TSSOP surface-mount package is required for space-constrained designs. Choose this variant over the 16-pin SOIC version if additional pins are needed for specific board layouts or if the application demands the specific thermal characteristics associated with the TSSOP footprint. Verify that the system operates within the specified 3V to 3.6V supply range.

Controllers Part Context

The DS1314 series addresses the challenge of maintaining data integrity in volatile RAM during power outages. By integrating power monitoring and battery management into a single CMOS circuit, it simplifies the design of nonvolatile memory systems. The E+ variant specifically provides the 20-pin TSSOP form factor, offering flexibility for modern surface-mount assembly techniques while maintaining the robust protection features of the broader DS1314 family.

Controllers Replacement Considerations

DS1314S+T&R (16-SOIC), DS1314S-2+T&R (8-SOIC), DS1314+T&R (8-DIP). Note that these alternatives differ in package type and pin count; verify mechanical fit and electrical compatibility before substitution.