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DS1391U-33 The Analog Devices / Maxim Integrated DS1391U-33 is a Clock/Calendar Real Time Clock with SPI interface. It operates from 1.3V to 5.5V and has an industrial temperature range.
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DS1391U-33

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices / Maxim Integrated DS1391U-33 is a Clock/Calendar Real Time Clock with SPI interface. It operates from 1.3V to 5.5V and has an industrial temperature range.
✓ Total Stock: 355 pcs

DS1391U-33 Available from 1 distributor

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355 pcs
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355 pcs On Request 1 On Request On Request 0539+ On Request On Request
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DS1391U-33 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Date Format
Features
Interface
Mounting Type
Operating Temperature
Supplier Device Package
Time Format
Type
Voltage
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DS1391U-33 Description

Short technical summary and product information.

The DS1391U-33 from Analog Devices / Maxim Integrated is a low-voltage Real-Time Clock (RTC) that provides time and date information, including hundredths of seconds, seconds, minutes, hours, day, date, month, and year with leap-year compensation. It supports both 12-hour and 24-hour formats and includes a programmable time-of-day alarm.

 

This device features an SPI-compatible interface for serial communication and operates over a wide voltage range of 1.3V to 5.5V. It consumes a typical current of 175µA at 2.97V to 5.5V. The RTC is designed for industrial applications, rated for an operating temperature range of -40°C to +85°C.

 

The DS1391U-33 is available in a 10-pin uMAX/uSOP package, suitable for surface mounting. Key features include power-fail detect and switch circuitry, trickle-charge capability, and a reset output/debounced input.

 

Applications for this RTC include hand-held devices, GPS/telematics systems, embedded time stamping, and medical devices where accurate timekeeping is essential.

DS1391U-33 Quick Information

Product Type: Real Time Clock
Canonical Name: DS1391U-33 Real-Time Clock
Subcategory: Clock/Calendar

DS1391U-33 Compliance

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

DS1391U-33 Features

  • Provides time and date with leap-year compensation.
  • SPI interface for serial communication.
  • Wide operating voltage from 1.3V to 5.5V.
  • Industrial temperature range of -40°C to +85°C.
  • Available in a 10-pin surface mount package.

DS1391U-33 Applications

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

DS1391U-33 FAQs

7 frequently asked questions generated from this part’s specifications.
What type of component is the DS1391U-33?

The DS1391U-33 is a Clock/Calendar Real Time Clock (RTC).

What is the operating voltage range for the DS1391U-33?

The operating voltage range is 1.3V to 5.5V.

What is the operating temperature range for the DS1391U-33?

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

How is the DS1391U-33 mounted?

The DS1391U-33 is a surface mount device.

What package is the DS1391U-33 supplied in?

The DS1391U-33 is supplied in a 10-uMAX/uSOP package.

What interface does the DS1391U-33 use?

The DS1391U-33 uses an SPI interface.

What features are included with the DS1391U-33?

Features include Alarm, Leap Year compensation, Square Wave Output, and Trickle-Charger capability.

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