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HomeProductsIntegrated Circuits (ICs)Clock/Timing - Real Time ClocksDS1644-120
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DS1644-120 - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
DS1644-120
Manufacturer
Maxim Integrated
Allelco Part Number
32D-DS1644-120
ECAD Model
Parts Description
IC RTC CLK/CALENDAR PAR 28EDIP
Package
28-DIP Module (0.600', 15.24mm)
Data sheet
Cylindrical Battery Holders.pdf
Our certification
In stock: 11290

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Specifications

DS1644-120 Tech Specifications
Analog Devices Inc./Maxim Integrated - DS1644-120 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - DS1644-120

Product Attribute Attribute Value  
Manufacturer Maxim Integrated  
Voltage - Supply, Battery -  
Voltage - Supply 4.5V ~ 5.5V  
Type Clock/Calendar  
Time Format HH:MM:SS (24 hr)  
Supplier Device Package 28-EDIP  
Series -  
Package / Case 28-DIP Module (0.600', 15.24mm)  
Package Tube  
Product Attribute Attribute Value  
Operating Temperature 0°C ~ 70°C  
Mounting Type Through Hole  
Memory Size 32KB  
Interface Parallel  
Features Leap Year, NVSRAM  
Date Format YY-MM-DD-dd  
Current - Timekeeping (Max) 4mA @ 4.5V ~ 5.5V  
Base Product Number DS1644  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

DS1644-120

Manufacturer

analog-devices

Introduction

The DS1644-120 is a real-time clock (RTC) with integrated non-volatile SRAM (NVSRAM) from Analog Devices. It provides accurate timekeeping with features like leap year support and a 24-hour time format. The integrated NVSRAM allows for data storage even during power outages.

Product Features and Performance

Supports leap year

24-hour time format (HH:MM:SS)

Date format: YY-MM-DD-dd

32KB of NVSRAM for data storage

Parallel interface

Operating voltage: 4.5V to 5.5V

Maximum timekeeping current: 4mA @ 4.5V to 5.5V

Operating temperature: 0°C to 70°C

Through-hole mounting, 28-DIP package (0.600", 15.24mm)

Product Advantages

Reliable real-time clock with leap year support

Integrated NVSRAM for data backup during power loss

Wide operating voltage and temperature range

Key Reasons to Choose This Product

Robust timekeeping capabilities with advanced features

Efficient power consumption for various applications

Versatile interface and package options for easy integration

Quality and Safety Features

Designed and manufactured by Analog Devices, a leading semiconductor company

Meets industry standards for quality and reliability

Compatibility

The DS1644-120 is compatible with a variety of microcontrollers and embedded systems that require a real-time clock with non-volatile memory.

Application Areas

Industrial automation

Building automation

Instrumentation and measurement equipment

Computer systems and peripherals

Product Lifecycle

The DS1644-120 is an obsolete product. Analog Devices has discontinued this model, and there are no direct equivalent or alternative models available. Customers are advised to contact our website's sales team for information on alternative real-time clock solutions that may suit their needs.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated DS1644-120

Product Attribute DS1644-120 DS1644P-120 DS1644L-120 DS1644-120+
Part Number DS1644-120 DS1644P-120 DS1644L-120 DS1644-120+
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Base Product Number DS1644 DS1644 - DS1644
Series - - - -
Mounting Type Through Hole Surface Mount Through Hole Through Hole
Operating Temperature 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C
Current - Timekeeping (Max) 4mA @ 4.5V ~ 5.5V 4mA @ 4.5V ~ 5.5V 4mA @ 5V 4mA @ 4.5V ~ 5.5V
Package / Case 28-DIP Module (0.600', 15.24mm) 34-PowerCap™ Module 28-DIP Module (0.600", 15.24mm) 28-DIP Module (0.600", 15.24mm)
Date Format YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD YY-MM-DD-dd
Features Leap Year, NVSRAM Leap Year, NVSRAM EEPROM, Leap Year, NVSRAM, RAM Leap Year, NVSRAM
Interface Parallel Parallel - Parallel
Voltage - Supply, Battery - 3V - -
Supplier Device Package 28-EDIP 34-PowerCap Module 28-EDIP 28-EDIP
Package Tube Tube Bulk Tube
Voltage - Supply 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V
Time Format HH:MM:SS (24 hr) HH:MM:SS (24 hr) HH:MM:SS (24 hr) HH:MM:SS (24 hr)
Type Clock/Calendar Clock/Calendar Clock/Calendar Clock/Calendar
Memory Size 32KB 32KB 32KB 32KB

DS1644-120 Datasheet PDF

Download DS1644-120 pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for DS1644-120 - Analog Devices Inc./Maxim Integrated.

Datasheets
Cylindrical Battery Holders.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.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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DS1644-120 Image

DS1644-120

Analog Devices Inc./Maxim Integrated
32D-DS1644-120

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