DS1254WB-150

Overview

The DS1254WB-150 is a Real Time Clock (RTC) and non-volatile static RAM device manufactured by Analog Devices Inc./Maxim Integrated. It integrates a phantom clock circuit to maintain timekeeping during power outages. The component features 2MB of NVSRAM capacity and supports parallel interface communication. It operates within a supply voltage range of 3V to 3.7V, with a maximum timekeeping current of 7mA at 3.3V. The device is housed in a 168-BBGA Module package (168-BGA 40x40) and is designed for surface mount installation. It functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated Phantom Clock for continuous timekeeping during main power loss
• 2MB Non-Volatile Static RAM (NVSRAM) storage capacity
• Parallel bus interface supporting HH:MM:SS:hh and YY-MM-DD-dd formats
• Surface Mount 168-BBGA Module package

Applications

• Industrial systems requiring persistent time and data retention
• Embedded controllers needing large non-volatile memory buffers
• Equipment operating in environments with intermittent power availability

Procurement Notes

Verify the specific suffix 'WB' against official datasheets to confirm pinout and package dimensions, as variations exist within the DS1254 series. Confirm RoHS compliance status through manufacturer documentation before procurement. Ensure the 168-BGA footprint matches the target PCB design constraints.

Selection Notes

Select this component when both substantial non-volatile memory (2MB) and robust timekeeping via phantom clock are required. The parallel interface necessitates sufficient microcontroller I/O lines. Verify that the 0°C to +70°C industrial temperature range meets the application's environmental requirements.

Part Context

This part belongs to the DS1254 family of RTC/NVRAM devices from Maxim Integrated. These components combine real-time clock functionality with large-capacity battery-backed SRAM. The WB variant specifically denotes the BGA packaging option, distinguishing it from DIP or PLCC versions in the same product line.

Replacement Considerations

Check for direct pin-compatible alternatives within the DS1254 series if different package styles are needed. Verify that substitute parts support the same 2MB capacity and phantom clock architecture to ensure functional equivalence.