RTC-72423B:ROHS

Real Time Clock Overview

The RTC-72423B:ROHS is a parallel interface Real-Time Clock (RTC) integrated circuit manufactured by Epson. It provides clock and calendar functions in a 24-SOP surface-mount package. The device operates within a supply voltage range of 4.5V to 5.5V and supports both 12-hour and 24-hour time formats. It features leap year compensation and maintains accuracy with a frequency stability of 50ppm. The component is designed for industrial applications, functioning reliably across an operating temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• Parallel interface for direct connection to host processors
• Integrated clock/calendar with leap year compensation
• Surface-mount 24-SOP package (7.90mm width)
• RoHS compliant construction

Real Time Clock Applications

• Industrial control systems requiring precise timekeeping
• Data logging equipment
• Telecommunications infrastructure

Real Time Clock Procurement Notes

Verify the specific suffix ':ROHS' against official Epson documentation to confirm compliance status and any associated material declarations. Check current product lifecycle status as this series may be subject to discontinuation notices. Ensure compatibility with existing 24-SOP footprints during procurement planning.

Real Time Clock Selection Notes

Select this component when a parallel interface RTC is required in a surface-mount form factor. Confirm that the host system supports the necessary parallel data lines and control signals. Verify that the 4.5V to 5.5V supply voltage aligns with the target application's power architecture.

Real Time Clock Part Context

This part belongs to the Epson RTC-72423 series, which includes variants such as the RTC-72423A and RTC-72423B:PURESN. The series is characterized by CMOS technology and parallel connectivity. The ':ROHS' suffix indicates adherence to Restriction of Hazardous Substances directives, distinguishing it from non-compliant or pure tin leaded versions.

Real Time Clock Replacement Considerations

Direct pin-compatible replacements within the same series include the RTC-72423A and RTC-72423B:PURESN. Cross-manufacturer substitutions require careful verification of interface timing, voltage levels, and register maps.