DS1338U-3 The DS1338U-3 is a serial real-time clock (RTC) from Analog Devices / Maxim Integrated, featuring an I2C interface and 56 bytes of NV SRAM. It operates across an industrial temperature range.
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DS1338U-3

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Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The DS1338U-3 is a serial real-time clock (RTC) from Analog Devices / Maxim Integrated, featuring an I2C interface and 56 bytes of NV SRAM. It operates across an industrial temperature range.
✓ Total Stock: 15,067 pcs

DS1338U-3 Available from 1 distributor

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DS1338U-3 Specifications Quick View

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DS1338U-3 Description

Short technical summary and product information.

The DS1338U-3 is a low-power, serial real-time clock (RTC) and calendar IC from Analog Devices / Maxim Integrated. It provides full binary-coded decimal (BCD) clock/calendar functions along with 56 bytes of non-volatile SRAM. Data is transferred serially via an I2C interface.

 

This device manages all timekeeping functions, including seconds, minutes, hours, day, date, month, and year, with leap-year compensation valid up to 2100. It supports both 24-hour and 12-hour formats with an AM/PM indicator. The integrated power-sense circuit automatically switches to a backup supply during power failures, ensuring continuous time and date operation.

 

The DS1338U-3 features a programmable square-wave output signal and operates within an industrial temperature range of -40°C to +85°C. It is available in a compact 8-uMAX/uSOP surface-mount package, making it suitable for space-constrained applications.

 

Key applications include handheld devices, consumer electronics, office equipment, medical devices, and telecommunications infrastructure.

DS1338U-3 Quick Information

Product Type: Real Time Clock
Canonical Name: DS1338U-3 Serial Real-Time Clock (RTC) with 56-Byte NV SRAM
Subcategory: Clock/Calendar

DS1338U-3 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

DS1338U-3 Features

  • Manages all timekeeping functions.
  • Includes 56 bytes of battery-backed NV SRAM.
  • Features automatic power-fail detect circuitry.
  • Operates from -40°C to 85°C industrial temperature range.
  • I2C serial interface for easy microcontroller integration.

DS1338U-3 Applications

  • Ideal for handheld devices like GPS.
  • Suitable for consumer electronics applications.
  • Used in office equipment such as printers.
  • Applicable in medical devices like dispensers.
  • Supports telecommunications equipment like servers.

DS1338U-3 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the DS1338U-3?

The operating voltage range is 1.3V to 3.7V.

What is the operating temperature range for this RTC?

The operating temperature range is -40°C to 85°C.

What package type is the DS1338U-3 available in?

The DS1338U-3 is available in an 8-uMAX/uSOP surface-mount package.

What is the RoHS status of the DS1338U-3?

The DS1338U-3 is RoHS3 Compliant.

What is the moisture sensitivity level (MSL) for the DS1338U-3?

The moisture sensitivity level is 1.

Does the DS1338U-3 have NVSRAM?

Yes, it includes 56 bytes of NVSRAM.

What interface does the DS1338U-3 use?

The DS1338U-3 uses an I2C, 2-Wire Serial interface.

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