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HomeProductsIntegrated Circuits (ICs)Clock/Timing - Real Time ClocksDS1308U-18+T
DS1308U-18+T Image
Image may be representation.
See specifications for product details.

DS1308U-18+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
DS1308U-18+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-DS1308U-18+T
ECAD Model
Parts Description
IC RTC CLOCK/CALENDAR I2C 8UMAX
Detailed Description
Package
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Data sheet
DS1308.pdf
RoHs Status
ROHS3 Compliant
In stock: 14934

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Specifications

DS1308U-18+T Tech Specifications
Analog Devices Inc./Maxim Integrated - DS1308U-18+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - DS1308U-18+T

Product Attribute Attribute Value  
Manufacturer Maxim Integrated  
Voltage - Supply, Battery 1.3V ~ 5.5V  
Voltage - Supply 1.71V ~ 5.5V  
Type Clock/Calendar  
Time Format HH:MM:SS (12/24 hr)  
Supplier Device Package 8-uMAX/uSOP  
Series -  
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)  
Package Tape & Reel (TR)  
Product Attribute Attribute Value  
Operating Temperature -40°C ~ 85°C  
Mounting Type Surface Mount  
Memory Size 56B  
Interface I²C, 2-Wire Serial  
Features Leap Year, NVSRAM, Square Wave Output  
Date Format YY-MM-DD-dd  
Current - Timekeeping (Max) 100µA @ 200µA @ 1.89V ~ 5.5V  
Base Product Number DS1308  

Parts Introduction

Manufacturer Part Number

DS1308U-18+T

Manufacturer

Maxim Integrated

Introduction

The DS1308U-18+T is a real-time clock (RTC) integrated circuit that provides timekeeping, calendar, and NVSRAM functions.

Product Features and Performance

Provides timekeeping, calendar, and NVSRAM functions

Supports leap year

Offers square wave output

Low power operation with timekeeping current of 100 μA at 1.89 V to 5.5 V

Operates at supply voltages from 1.71 V to 5.5 V

Provides 56 bytes of NVSRAM

Communicates through a 2-wire serial interface

Supports 12/24 hour time format

Provides YY-MM-DD-dd date format

Operates over the temperature range of -40°C to 85°C

Product Advantages

Compact size with 8-uMAX/uSOP package

Low power consumption

Integrated NVSRAM for data storage

Supports a wide range of supply voltages

Wide temperature operating range

Key Technical Parameters

Manufacturer Part Number: DS1308U-18+T

Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Mounting Type: Surface Mount

Operating Temperature: -40°C to 85°C

Voltage Supply: 1.71 V to 5.5 V

Voltage Supply, Battery: 1.3 V to 5.5 V

Current Timekeeping (Max): 100 μA at 1.89 V to 5.5 V

Time Format: HH:MM:SS (12/24 hr)

Date Format: YY-MM-DD-dd

Memory Size: 56 bytes

Interface: 2-Wire Serial

Quality and Safety Features

RoHS3 compliant

Compatibility

The DS1308U-18+T is compatible with a wide range of electronic systems that require real-time clock and calendar functions.

Application Areas

Industrial automation

Embedded systems

Consumer electronics

Portable devices

Product Lifecycle

The DS1308U-18+T is an active product and is not nearing discontinuation.

Replacements and upgrades may be available, but the specific details would need to be checked with the manufacturer.

Key Reasons to Choose This Product

Low power consumption for extended battery life

Integrated NVSRAM for data storage

Wide operating voltage and temperature ranges

Compact size and surface mount package

Leap year support and square wave output

Reliable 2-wire serial interface for easy integration

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated DS1308U-18+T

Product Attribute DS1308U-18+T DS1308U-18+ DS1307ZN+T&R DS1308U-33+
Part Number DS1308U-18+T DS1308U-18+ DS1307ZN+T&R DS1308U-33+
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Voltage - Supply 1.71V ~ 5.5V 1.71V ~ 5.5V 4.5V ~ 5.5V 3V ~ 5.5V
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Features Leap Year, NVSRAM, Square Wave Output Leap Year, NVSRAM, Square Wave Output Leap Year, NVSRAM, Square Wave Output Leap Year, NVSRAM, Square Wave Output
Base Product Number DS1308 DS1308 DS1307 DS1308
Memory Size 56B 56B 56B 56B
Interface I²C, 2-Wire Serial I²C, 2-Wire Serial I²C, 2-Wire Serial I²C, 2-Wire Serial
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Current - Timekeeping (Max) 100µA @ 200µA @ 1.89V ~ 5.5V 100µA @ 200µA @ 1.89V ~ 5.5V 200µA @ 5V 125µA ~ 200µA @ 3V ~ 5.5V
Time Format HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr)
Supplier Device Package 8-uMAX/uSOP 8-uMAX/uSOP 8-SOIC 8-uMAX/uSOP
Package Tape & Reel (TR) Tube Tape & Reel (TR) Tube
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-SOIC (0.154", 3.90mm Width) 8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
Date Format YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD-dd
Type Clock/Calendar Clock/Calendar Clock/Calendar Clock/Calendar
Voltage - Supply, Battery 1.3V ~ 5.5V 1.3V ~ 5.5V 2V ~ 3.5V 1.3V ~ 5.5V
Series - - - -

DS1308U-18+T Datasheet PDF

Download DS1308U-18+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for DS1308U-18+T - Analog Devices Inc./Maxim Integrated.

Datasheets
DS1308.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf Red Phosphorous Certificate.pdf Material Declaration DS1308U-18+T.pdf
Application Notes
Oscillator Design Considerations for Low-Current A.pdf Selecting a Backup Source for Real-Time Clocks.pdf State Machine Logic in Binary-Coded Decimal (BCD)-.pdf DS32kHz used with Maxim Real-Time Clocks.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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DS1308U-18+T Image

DS1308U-18+T

Analog Devices Inc./Maxim Integrated
32D-DS1308U-18+T

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