DS1248Y-70+

Overview

The DS1248Y-70+ is a nonvolatile SRAM integrated with a phantom clock real-time clock (RTC) module. It provides 128K x 8 memory organization and operates within a 4.5V to 5.5V supply range at commercial temperatures from 0°C to +70°C. The device features a parallel interface, automatic leap year compensation valid through 2100, and over 10 years of data retention via an embedded lithium energy cell. It utilizes a 32-pin EDIP package for through-hole mounting.

Feature Summary

• 128K x 8 Nonvolatile SRAM with Phantom Clock RTC
• Automatic Leap Year Compensation Valid Up to 2100
• Embedded Lithium Energy Cell for Data Retention
• Parallel Interface with Standard 32-Pin JEDEC Pinout

Applications

• Direct replacement for volatile static RAM or EEPROM in systems requiring timekeeping
• Industrial control systems needing reliable calendar and clock functions
• Data logging applications requiring long-term battery-backed storage

Procurement Notes

Verify the specific suffix 'Y' confirms the commercial temperature range (0°C to +70°C) and 5V operation. Confirm the '+'' indicates lead-free/RoHS compliance. Ensure the 32-EDIP package matches the target PCB footprint requirements for through-hole assembly.

Selection Notes

Select this part when a combined NVSRAM and RTC solution is required without external components. Compare against the DS1248YP-70+ if surface-mount PowerCap integration is preferred. Verify that the 70ns access time meets system timing constraints.

Part Context

This component belongs to the DS1248 series of 1024K NV SRAMs with phantom clocks. It is pin-for-pin compatible with the DS1244P and DS1251P. The Y suffix denotes the commercial temperature grade, distinct from the IND suffix used for industrial grades.

Replacement Considerations

Pin-for-pin compatible with DS1244P and DS1251P. For surface mount alternatives, consider the DS1248YP-70+ which requires a separate PowerCap module.