DS1374C-33#T&R

Real Time Clock Overview

The DS1374C-33#T&R is a real-time clock (RTC) IC featuring a 32-bit binary counter for continuous timekeeping. It includes an additional 24-bit counter configurable as an alarm or watchdog timer, or as 3 bytes of non-volatile RAM. The device utilizes an I²C serial interface and integrates a crystal in the package. It supports low-voltage operation with a supply range of 2.97V to 5.5V and a backup supply of 1.3V to 5.5V. Key features include automatic power-fail detection, trickle-charging capability, and separate interrupt and square-wave outputs.

Real Time Clock Feature Summary

• 32-bit binary counter for elapsed seconds counting
• Integrated 32.768kHz crystal in surface-mount package
• Automatic power-fail detect and switch circuitry
• Trickle-charge capability for backup batteries

Real Time Clock Applications

• Portable Instruments
• Point-of-Sale Equipment
• Medical Equipment
• Telecommunications

Real Time Clock Procurement Notes

Verify that the component matches the specific voltage variant (DS1374C-33) and package type (16-SOIC). Confirm RoHS compliance status based on the '#' suffix designation. Ensure the ordering suffix corresponds to the required tape-and-reel packaging format.

Real Time Clock Selection Notes

Select this part when an integrated crystal solution is required to save board space. The -33 suffix indicates a nominal 3.3V operating voltage. Consider the DS1374U series if a 10-pin µSOP package is preferred over the 16-pin SO form factor.

Real Time Clock Part Context

This component belongs to the DS1374 family of I²C real-time clocks. The 'C' designation signifies the inclusion of an integrated crystal oscillator, distinguishing it from the 'U' variant which requires an external crystal. The '-33' specifies the 3.3V supply voltage rating.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.