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DS1643-100 The DS1643-100 from Dallas Semiconductor is a Real Time Clock (RTC) IC featuring 8KB of NVSRAM and a Parallel interface. It operates from 4.5V to 5.5V and is suitable for through-hole mounting.
Mfr Part #:

DS1643-100

Available from 2 distributors
Mfr Name: Dallas Semiconductor
Dallas Semiconductor
The DS1643-100 from Dallas Semiconductor is a Real Time Clock (RTC) IC featuring 8KB of NVSRAM and a Parallel interface. It operates from 4.5V to 5.5V and is suitable for through-hole mounting.
✓ Total Stock: 1,833 pcs
$ Price Range: $1.28

DS1643-100 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
1,831 pcs
On Request
1831 pcs On Request 1 On Request On Request 0112+00+ On Request On Request
Speed Components Ltd ✓
Non-Authorised Inventory information
2 pcs
On Request
2 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

DS1643-100 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Features
Interface
Lead Spacing
Lead Style
Memory Size
Module
Mounting Type
Voltage Supply
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DS1643-100 Description

Short technical summary and product information.

The DS1643-100 is a Real Time Clock (RTC) integrated circuit manufactured by Dallas Semiconductor. This component provides clock and calendar functions with 8KB of NVSRAM for data storage. It supports a 24-hour time format (HH:MM:SS) and a YY-MM-DD-dd date format.

 

Designed for reliability, the DS1643-100 features leap year support. It operates within a supply voltage range of 4.5V to 5.5V, consuming a maximum of 3mA at 5V for timekeeping. The interface is parallel, allowing for straightforward integration into various systems.

 

This RTC IC is housed in a 28-DIP module with a 0.600" (15.24mm) pin spacing and is designed for through-hole mounting. The operating temperature range is from 0°C to 70°C, making it suitable for a variety of environmental conditions.

 

Key specifications include 8KB memory size, parallel interface, and a wide operating temperature range. The NVSRAM feature ensures data retention even when the main power supply is interrupted.

DS1643-100 Quick Information

Product Type: Real Time Clock (RTC) IC
Series: DS1643
Canonical Name: DS1643-100 Real Time Clock (RTC) IC
Subcategory: Memory

DS1643-100 Compliance

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

DS1643-100 Estimated Pricing

Qty Low High
1+ $1.28 $1.28

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

DS1643-100 Features

  • 8KB NVSRAM for data storage.
  • Parallel interface for easy integration.
  • Supports leap year calculations.
  • Operates from 4.5V to 5.5V supply.
  • Through-hole mounting in 28-DIP module.

DS1643-100 Applications

  • Ideal for timekeeping applications.
  • Suitable for systems needing data retention.
  • Used in embedded control systems.
  • Applicable in data logging devices.

DS1643-100 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the DS1643-100?

4.5V to 5.5V.

What is the operating temperature range?

0°C to 70°C.

What package is the DS1643-100 available in?

28-DIP Module (0.600", 15.24mm) for through-hole mounting.

What is the memory size of the DS1643-100?

8KB.

What interface does the DS1643-100 use?

Parallel interface.

Does the DS1643-100 support leap year?

Yes, it includes leap year compensation.

What time and date formats are supported?

HH:MM:SS (24-hour) time format and YY-MM-DD-dd date format.

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