DS3231S#

DS3231S# Overview

DS3231S# is a Analog Devices high-accuracy I2C real-time clock with integrated TCXO and crystal, commercial temperature grade supplied in 16-pin wide SOIC, 300 mil. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.

Key Technical Specifications

Package and Ordering Notes

The listed package is 16-pin wide SOIC, 300 mil with 16 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. The part or family is listed by Analog Devices as Production at the verification date.

Sourcing Guidance

Confirm current factory lead time, revision, temperature grade and packing format for DS3231S# before ordering.

For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.

Manufacturer Documentation

Technical values were checked against Analog Devices documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.

DS3231S# FAQ

How DS3231S# differs from related orderable parts

DS3231S# belongs to the DS3231 family. Compared with DS3231SN#, the recorded differences include functional description: high-accuracy I2C real-time clock with integrated TCXO and crystal, commercial temperature grade versus high-accuracy I2C real-time clock with integrated TCXO and crystal, industrial temperature grade; operating temperature: 0°C to +70°C versus -40°C to +85°C; and Timekeeping Accuracy: ±2 ppm from 0°C to +40°C, a lower recorded value than ±3.5 ppm from -40°C to +85°C. A shared family name does not establish pin, firmware or qualification compatibility.

For an RFQ or AVL review, quote the complete DS3231S# code and verify the manufacturer ordering table, package drawing, packing method and revision. The related numbers above are comparison references, not declared drop-in replacements.

Exact order-code identity for DS3231S#

For BOM, label, AVL and RFQ matching, preserve these visible code segments: opening alphabetic sequence DS; middle numeric sequence three two three one; and terminal alphabetic sequence S. The nearest published comparison codes are DS3231SN#; DS3231M+; and DS3232S#. Compare every segment because a changed character can identify a different density, voltage, package, temperature, qualification or packing option.

Do not shorten the requested code to DS3231 or remove its terminal characters. Ask the supplier to reproduce the complete code on the quotation and provide label or traceability evidence when exact suffix matching is mandatory.

DS3231S# specification interpretation

The following notes interpret the recorded values for this exact orderable code. They are intended to make model-to-model differences visible during engineering and procurement review; the manufacturer datasheet remains the controlling source.

• Timekeeping Accuracy: The recorded value is ±2 ppm from 0°C to +40°C, expressed in words as ±two ppm from zero°C to +forty°C. Use the worst-case datasheet limit rather than a typical headline value. The comparison record for DS3231SN# lists ±3.5 ppm from -40°C to +85°C; this page therefore preserves ±2 ppm from 0°C to +40°C as the value associated with DS3231S#.
• Serial Interface: The recorded value is I2C up to 400 kHz, expressed in words as ItwoC up to four hundred kHz. Confirm logic levels, signaling mode, host support and required external components.
• Supply Voltage: The recorded value is 3.3 V nominal operation, expressed in words as three point three V nominal operation. Check rail compatibility, tolerance and sequencing under worst-case conditions.
• Battery Backup: The recorded value is Supported. Confirm the value and its datasheet test conditions for the exact ordering suffix.
• User Memory: The recorded value is No user SRAM. Confirm address organization, software support and required usable capacity.

Choosing between DS3231S# and DS3231SN#

The decision points below use the values recorded for these two exact orderable codes. Select DS3231S# when its stated value is the BOM requirement; select DS3231SN# only when the alternate value has been independently approved.

• temperature grade: the current page records 0°C to +70°C, while the comparison page records -40°C to +85°C. This difference can affect environmental and qualification margin.
• functional description: the current page records high-accuracy I2C real-time clock with integrated TCXO and crystal, commercial temperature grade, while the comparison page records high-accuracy I2C real-time clock with integrated TCXO and crystal, industrial temperature grade. This difference can affect intended function and feature set.
• Timekeeping Accuracy: DS3231S# records ±2 ppm from 0°C to +40°C, while DS3231SN# records ±3.5 ppm from -40°C to +85°C. Use the worst-case datasheet limit rather than a typical headline value.

If the assembly documentation names DS3231S#, require the quotation and supplied label to retain DS3231S# in full. A request for DS3231SN# should be handled as a proposed substitution and reviewed for electrical, mechanical, firmware and qualification impact before approval.