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DS1340U-33+ The DS1340U-33+ is a Real Time Clock (RTC) / Calendar IC from Analog Devices / Maxim Integrated. It features an I2C interface and operates over a wide voltage range.
Mfr Part #:

DS1340U-33+

Available from 3 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The DS1340U-33+ is a Real Time Clock (RTC) / Calendar IC from Analog Devices / Maxim Integrated. It features an I2C interface and operates over a wide voltage range.
✓ Total Stock: 977 pcs

DS1340U-33+ Available from 3 distributors

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Braun Electronic Components ✓
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610 pcs
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610 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
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366 pcs
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366 pcs On Request 1 On Request On Request On Request On Request 2026-02-23 21:33:16
Partservice ✓
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1 pcs
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1 pcs On Request 1 On Request On Request On Request On Request On Request
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DS1340U-33+ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Date Format
Features
Industrial Grade
Interface
Lead Spacing
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Supplier Device Package
Tape & Reel
Time Format
Type
Voltage
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DS1340U-33+ Description

Short technical summary and product information.

The DS1340U-33+ is an I2C Real Time Clock (RTC) and calendar IC manufactured by Analog Devices / Maxim Integrated. It is designed to manage all timekeeping functions, counting seconds, minutes, hours, day, date, month, and year. The device supports software clock calibration and includes an oscillator stop flag.

 

Key electrical specifications include an operating voltage range of 1.3V to 5.5V and a typical current consumption of 150µA at 5.5V. The interface is a 2-wire serial I2C, supporting speeds up to 400kHz. The operating temperature range is -40°C to 85°C.

 

This RTC offers trickle-charge capability and automatic power-fail detect circuitry, switching to a backup supply when power is lost. It is available in an 8-pin package, suitable for surface mounting, minimizing space requirements in designs.

 

Applications for the DS1340U-33+ include portable instruments, point-of-sale equipment, medical equipment, and telecommunications systems where accurate timekeeping is essential.

DS1340U-33+ Quick Information

Product Type: Real Time Clock (RTC)
Canonical Name: DS1340U-33+ I2C RTC with Trickle Charger
Subcategory: Clock/Calendar

DS1340U-33+ Compliance

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

DS1340U-33+ Features

  • Manages all timekeeping functions.
  • Supports software clock calibration.
  • Includes trickle-charge capability.
  • Operates from 1.3V to 5.5V.
  • Fast 400kHz I2C interface.

DS1340U-33+ Applications

  • Ideal for portable instruments.
  • Suitable for point-of-sale equipment.
  • Used in medical equipment.
  • Applicable to telecommunications.

DS1340U-33+ FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the DS1340U-33+?

The operating voltage range is 1.3V to 5.5V.

What package type is the DS1340U-33+ available in?

It is available in an 8-pin uMAX/uSOP package and an 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) package.

What is the operating temperature range for this RTC?

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

Is the DS1340U-33+ RoHS compliant?

Yes, it is RoHS3 Compliant.

What features does the DS1340U-33+ offer?

It offers leap year functionality and trickle-charger capability.

What is the interface type for the DS1340U-33+?

The interface is I2C, 2-Wire Serial.

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