DS1338U-33 The Analog Devices DS1338U-33 is a serial real-time clock (RTC) with an I2C interface and 56 bytes of NV SRAM. It operates across an industrial temperature range.
Mfr Part #:

DS1338U-33

Available from 2 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS1338U-33 is a serial real-time clock (RTC) with an I2C interface and 56 bytes of NV SRAM. It operates across an industrial temperature range.
Total Stock: 70,267 pcs

DS1338U-33 Available from 2 distributors

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DS1338U-33 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
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Features
Interface
Memory Size
Mounting Type
Operating Temperature
Supplier Device Package
Time Format
Type
Voltage

DS1338U-33 Description

Short technical summary and product information.

The DS1338U-33 from Analog Devices is a low-power serial real-time clock (RTC) that manages all timekeeping functions, including seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2100. It features a 56-byte battery-backed NV SRAM for general-purpose use with unlimited writes.

 

This clock/calendar IC utilizes an I2C serial interface for communication with microcontrollers. It supports both 12-hour and 24-hour formats with an AM/PM indicator. The device includes a built-in power-sense circuit that automatically switches to a backup supply during power failures, ensuring continuous time and date operation.

 

Designed for surface mounting, the DS1338U-33 is available in an 8-uMAX/uSOP package, saving space and simplifying board design. It operates within an industrial temperature range of -40°C to 85°C and supports a voltage range of 1.3V to 3.7V. Typical current consumption is between 125µA and 200µA at 3.63V to 5.5V.

 

Applications for the DS1338U-33 include handheld devices, consumer electronics, office equipment, medical devices, and telecommunications infrastructure.

DS1338U-33 Quick Information

Product Type: Real Time Clock
Canonical Name: DS1338U-33 Clock/Calendar IC with I2C Interface
Subcategory: Clock/Calendar

DS1338U-33 Compliance

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

DS1338U-33 Features

  • Manages all timekeeping functions.
  • Includes 56-byte battery-backed NV SRAM.
  • Features I2C serial interface.
  • Operates from -40°C to 85°C.
  • Automatic power-fail detect circuitry.

DS1338U-33 Applications

  • Suitable for handheld devices.
  • Used in consumer electronics.
  • Applicable to office equipment.
  • Designed for medical devices.
  • Supports telecommunications systems.

DS1338U-33 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the DS1338U-33?

The operating voltage range is 1.3V to 3.7V.

What is the operating temperature range for the DS1338U-33?

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

What is the memory size of the DS1338U-33?

The DS1338U-33 has a memory size of 56B.

What interface does the DS1338U-33 use?

The DS1338U-33 uses an I2C, 2-Wire Serial interface.

What time formats does the DS1338U-33 support?

The DS1338U-33 supports HH:MM:SS in both 12-hour and 24-hour formats.

Does the DS1338U-33 have leap year compensation?

Yes, the DS1338U-33 provides leap year compensation valid up to the year 2100.

What is the package type for the DS1338U-33?

The DS1338U-33 is available in an 8-uMAX/uSOP surface mount package.

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