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DS1338Z-33+ The DS1338Z-33+ is a serial real-time clock (RTC) from Dallas Semiconductor, offering 56 bytes of NV SRAM and an I2C interface. It operates from 3V to 5.5V and is rated for industrial temperatures.
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DS1338Z-33+

Available from 1 distributors
Mfr Name: Dallas Semiconductor
Dallas Semiconductor
The DS1338Z-33+ is a serial real-time clock (RTC) from Dallas Semiconductor, offering 56 bytes of NV SRAM and an I2C interface. It operates from 3V to 5.5V and is rated for industrial temperatures.
✓ Total Stock: 4,068 pcs
$ Price Range: $12.91

DS1338Z-33+ Available from 1 distributor

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DS1338Z-33+ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Clock Frequency
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Number of Pins
Operating Temperature
Operating Voltage
Storage Temperature
Tape & Reel
Termination Style
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DS1338Z-33+ Description

Short technical summary and product information.

The DS1338Z-33+ is a low-power serial real-time clock (RTC) manufactured by Dallas Semiconductor (now Analog Devices). It integrates a full binary-coded decimal (BCD) clock/calendar with 56 bytes of battery-backed non-volatile SRAM. Timekeeping functions include seconds, minutes, hours, day, date, month, and year, with automatic adjustment for month lengths and leap years up to 2100.

 

This RTC features an I2C serial interface for communication with microcontrollers. It includes a built-in power-sense circuit that automatically switches to a backup supply during power failures, ensuring continuous time and date operation. The device also provides a programmable square-wave output signal.

 

Designed for a wide range of applications, the DS1338Z-33+ operates within an industrial temperature range of -40°C to +85°C. It is available in a surface-mount SOIC package, simplifying design and saving space. Its low-power operation extends battery backup run time, making it suitable for handheld devices, consumer electronics, office equipment, and telecommunications systems.

DS1338Z-33+ Quick Information

Product Type: Real-Time Clock (RTC)
Canonical Name: DS1338Z-33+ Serial Real-Time Clock (RTC) with 56-Byte NV SRAM
Subcategory: RTC

DS1338Z-33+ Compliance

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

DS1338Z-33+ Estimated Pricing

Qty Low High
1+ $12.91 $12.91

Estimated market price range - modelled values for guidance only, not live distributor offers.

DS1338Z-33+ Features

  • Manages seconds, minutes, hours, date, month, and year.
  • Includes 56 bytes of battery-backed NV SRAM.
  • Features an I2C serial interface for communication.
  • Automatic power-fail detect and switch circuitry.
  • Operates from -40°C to +85°C industrial temperature range.

DS1338Z-33+ Applications

  • Ideal for handheld devices like GPS and POS terminals.
  • Suitable for consumer electronics such as set-top boxes.
  • Used in office equipment like fax machines and printers.
  • Applicable in medical devices like glucometers.
  • Supports telecommunications equipment like routers and servers.

DS1338Z-33+ FAQs

6 frequently asked questions generated from this part’s specifications.
What are the key timekeeping functions of the DS1338Z-33+?

The DS1338Z-33+ counts seconds, minutes, hours, date of the month, month, and day of the week, with leap-year compensation valid up to 2100.

How much non-volatile SRAM is included with the DS1338Z-33+?

The DS1338Z-33+ includes 56 bytes of battery-backed, general-purpose NV SRAM with unlimited writes.

What is the supply voltage range for the DS1338Z-33+?

The supply voltage range for the DS1338Z-33+ is 3V to 5.5V.

What is the operating temperature range of the DS1338Z-33+?

The DS1338Z-33+ operates in an industrial temperature range from -40°C to +85°C.

What interface does the DS1338Z-33+ use?

The DS1338Z-33+ uses an I2C serial interface.

What package type is the DS1338Z-33+ available in?

The DS1338Z-33+ is available in an SOIC package.

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