DS3231N/DIP

Real Time Clock Overview

The DS3231N/DIP is a precision Real-Time Clock (RTC) integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It features an integrated temperature-compensated crystal oscillator (TCXO) and crystal, delivering high accuracy of ±2ppm from 0°C to +40°C and ±3.5ppm from -40°C to +85°C. The device operates on a supply voltage range of 2.3V to 5.5V with low current consumption, typically 1.5µA. It communicates via a fast 400kHz I2C interface and includes a battery backup switch for continuous timekeeping during power outages. The component is housed in a 16-pin DIP package.

Real Time Clock Feature Summary

• Integrated TCXO providing ±2ppm accuracy (0°C to +40°C) and ±3.5ppm accuracy (-40°C to +85°C)
• Fast 400kHz I2C serial interface for communication with microcontrollers
• Battery backup input with automatic switching to maintain timekeeping during main power loss
• Includes two calendar alarms and a programmable square-wave output pin
• Built-in digital temperature sensor with ±3°C accuracy

Real Time Clock Applications

• Global Positioning Systems (GPS)
• Industrial servers and data logging equipment
• Meters and utility monitoring devices
• Portable instruments requiring precise timestamping

Real Time Clock Procurement Notes

Verify the specific suffix 'N' confirms the 16-pin DIP package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Check for lead-free specifications if required by regional regulations. Ensure the ordering part number matches the exact package style needed for the PCB layout.

Real Time Clock Selection Notes

Select this component when high timing accuracy without external crystals is required. The DS3231N/DIP is suitable for designs needing through-hole mounting. Consider the 2.3V to 5.5V operating range for compatibility with various logic levels. Verify that the I2C address conflicts are managed within the system design.

Real Time Clock Part Context

The DS3231 series is a widely used RTC family known for integrating the crystal oscillator internally, eliminating the need for external tuning components. The 'N' suffix specifically denotes the 16-lead DIP package, distinguishing it from SOIC or TSSOP variants like the DS3231M or DS3231SN. This package style facilitates prototyping and through-hole assembly.

Real Time Clock Replacement Considerations

Direct pin-compatible replacements include other DS3231 variants such as DS3231M+ (SOIC-16) or DS3231SN#T&R (SOIC-16), provided the package footprint is adapted. Ensure the substitute maintains the same I2C interface and voltage requirements.