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DS1390U-33+T&R The Analog Devices DS1390U-33+T&R is an SPI interface Real Time Clock IC. It provides alarm, leap year compensation, and trickle-charge capability.
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DS1390U-33+T&R

Available from 3 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS1390U-33+T&R is an SPI interface Real Time Clock IC. It provides alarm, leap year compensation, and trickle-charge capability.
✓ Total Stock: 3,414 pcs

DS1390U-33+T&R Available from 3 distributors

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Xingangxin ✓
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3,147 pcs
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3147 pcs On Request 1 On Request On Request On Request On Request On Request
Seba Components ✓
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250 pcs
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250 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
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17 pcs
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17 pcs On Request 1 On Request On Request On Request On Request On Request
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DS1390U-33+T&R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
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Features
Interface
Lead Spacing
Mounting Type
Operating Temperature
Supplier Device Package
Time Format
Type
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DS1390U-33+T&R Description

Short technical summary and product information.

The Analog Devices DS1390U-33+T&R is a low-voltage Real Time Clock (RTC) IC featuring an SPI-compatible interface. It provides accurate timekeeping, including hundredths of seconds, seconds, minutes, hours, day, date, month, and year, with automatic leap year correction valid up to 2100. The device supports both 12-hour and 24-hour formats with an AM/PM indicator.

 

Key features include a programmable time-of-day alarm and a trickle-charge capability for backup power. The output pin can be configured as an interrupt or a square wave generator with selectable frequencies. Power-fail detect circuitry automatically switches to a backup supply when VCC fails. The DS1390U-33+T&R operates over a wide voltage range of 1.3V to 5.5V and is rated for an industrial temperature range of -40°C to +85°C.

 

This RTC is supplied in a compact 10-pin µSOP package, suitable for surface mounting. Its features make it ideal for applications requiring precise timekeeping, such as hand-held devices, GPS/telematics, embedded time stamping, and medical devices.

DS1390U-33+T&R Quick Information

Product Type: Real Time Clock IC
Canonical Name: DS1390U-33+T&R SPI Clock/Calendar IC
Subcategory: Clock/Calendar

DS1390U-33+T&R Compliance

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

DS1390U-33+T&R Features

  • Provides time and date with leap year compensation.
  • SPI interface for serial communication.
  • Includes programmable time-of-day alarm.
  • Supports trickle-charge capability.
  • Operates from 1.3V to 5.5V.

DS1390U-33+T&R Applications

  • Ideal for hand-held devices.
  • Suitable for GPS/telematics systems.
  • Used for embedded time stamping.
  • Applicable in medical devices.

DS1390U-33+T&R FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the DS1390U-33+T&R?

The operating voltage range is 1.3V to 5.5V.

What is the operating temperature range for this Real Time Clock IC?

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

What package type is the DS1390U-33+T&R supplied in?

It is supplied in a 10-pin µSOP package, also referred to as 10-TFSOP or 10-MSOP.

Does the DS1390U-33+T&R support leap year compensation?

Yes, it provides leap year compensation valid up to the year 2100.

What interface does the DS1390U-33+T&R use?

It uses an SPI-compatible interface.

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