DS1644-120 The DS1644-120+ is a Real Time Clock from Dallas Semiconductor featuring a parallel interface and 32KB of memory. It operates within a temperature range of 0°C to 70°C.
Mfr Part #:

DS1644-120

Available from 2 distributors
Mfr Name: Dallas Semiconductor
Dallas Semiconductor
The DS1644-120+ is a Real Time Clock from Dallas Semiconductor featuring a parallel interface and 32KB of memory. It operates within a temperature range of 0°C to 70°C.
Total Stock: 2,736 pcs
$ Price Range: $0.30

DS1644-120 Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,728 pcs
2728 pcs On Request 1 On Request On Request 02+ On Request On Request
Non-Authorised Inventory information
8 pcs
8 pcs On Request 1 On Request On Request On Request On Request On Request

DS1644-120 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Features
Interface
Memory Size
Mounting Type
Operating Temperature
Supply Voltage

DS1644-120 Description

Short technical summary and product information.

The DS1644-120+ is a Real Time Clock (RTC) module manufactured by Dallas Semiconductor, also listed by Analog Devices Inc./Maxim Integrated. This component is designed for applications requiring accurate timekeeping and calendar functions.

 

Key specifications include a parallel interface for data access, 32KB of memory, and support for both 24-hour time format (HH:MM:SS) and YY-MM-DD-dd date format. The device operates with a supply voltage ranging from 4.5V to 5.5V and consumes a maximum of 4mA during timekeeping at this voltage range.

 

This RTC module is housed in a 28-DIP Module package with a 0.600-inch (15.24mm) width, designed for through-hole mounting. It features leap year calculation and NVSRAM capabilities. The operating temperature range is from 0°C to 70°C, making it suitable for various industrial and commercial environments.

 

Environmental compliance includes RoHS3 compliance, MSL 1 (Unlimited) moisture sensitivity level, and REACH Unaffected status. The DS1644-120+ is classified under the Real Time Clocks category.

DS1644-120 Quick Information

Product Type: Real Time Clock
Canonical Name: DS1644-120 Real Time Clock
Subcategory: Clock/Calendar

DS1644-120 Compliance

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

DS1644-120 Estimated Pricing

Qty Low High
1+ $0.30 $0.30

Estimated market price range - modelled values for guidance only, not live distributor offers.

DS1644-120 Features

  • Real Time Clock with calendar functions.
  • Parallel interface for data access.
  • 32KB of NVSRAM memory included.
  • Operates from 4.5V to 5.5V supply.
  • 0°C to 70°C operating temperature range.

DS1644-120 Applications

  • Ideal for embedded systems needing timekeeping.
  • Suitable for data logging applications.
  • Used in devices requiring accurate date/time.
  • Supports leap year calculations.

DS1644-120 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the memory size of the DS1644-120+?

The DS1644-120+ has a memory size of 32KB.

What is the operating temperature range for the DS1644-120+?

The DS1644-120+ operates from 0°C to 70°C.

What type of interface does the DS1644-120+ use?

The DS1644-120+ uses a Parallel interface.

What is the supply voltage range for the DS1644-120+?

The supply voltage range for the DS1644-120+ is 4.5V to 5.5V.

What is the package type for the DS1644-120+?

The DS1644-120+ is supplied in a 28-DIP Module (0.600, 15.24mm) package.

How is the DS1644-120+ mounted?

The DS1644-120+ is mounted using the Through Hole method.

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