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DS1643-100

DS1643-100

DS1643-100

Maxim Integrated

28 Terminations 5V 28 Pin DS1643 Real Time Clocks Leap Year, NVSRAM

SOT-23

DS1643-100 Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Contact PlatingTin
Mount Through Hole
Mounting Type Through Hole
Package / Case 28-DIP Module (0.600, 15.24mm)
Number of Pins 28
Operating Temperature0°C~70°C
PackagingTube
Published 1997
JESD-609 Code e3
Feature Leap Year, NVSRAM
Pbfree Code yes
Part StatusObsolete
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 28
Termination Through Hole
ECCN Code EAR99
Type Clock/Calendar
HTS Code8473.30.11.80
Voltage - Supply 4.5V~5.5V
Terminal Position DUAL
Supply Voltage 5V
Terminal Pitch2.54mm
Frequency 32.8kHz
Base Part Number DS1643
Pin Count28
Operating Supply Voltage5V
Power Supplies5V
Interface Parallel
Memory Size8KB
Nominal Supply Current50mA
Access Time 100 ns
Logic Function Clock
Number of Timers 1
Time FormatHH:MM:SS (24 hr)
Date FormatYY-MM-DD-dd
Current - Timekeeping (Max) 3mA @ 5V
Time-Min SECONDS
Interrupt CapabilityN
Volatile NO
Height 9.4mm
Length 39.12mm
Width 18.8mm
REACH SVHC Unknown
Radiation HardeningNo
RoHS StatusNon-RoHS Compliant
Lead Free Contains Lead, Lead Free
In-Stock:1459 items

DS1643-100 Product Details

DS1643-100 Overview


This real time analog clock can be found in package 28-DIP Module (0.600, 15.24mm).The package is packaged in the way of Tube.Unless otherwise stated, this electrical RTC's supply voltage is 4.5V~5.5V.This electrical real time clock is type Clock/Calendar.This part is mounted on the systemboard in the way indicated by Through Hole.Ideally, the operating temperature should be set to 0°C~70°C.Electronic time clocks are possible to make sure that Leap Year, NVSRAM are maintained when operating.28 terminations are available for transmission lines, implying that the RTC module terminating the line matches its characteristic impedance.RTC real time clocks such as this one are powered by 5V voltage.With its 28 pins, it has the necessary functions.As a member of the DS1643 family, RTCs belongs to them.The RTC times have a memory size of 8KB that is available for storing data and programs.There is a mounting type Through Hole specified for the RTC module.A total of 5V power supplies are required to operate it.There are 28 pins on it.An input signal is received by 1 timers, which output a signal after a preset time.High efficiency requires a 5V supply voltage.It is possible to reach a frequency of 32.8kHz.

DS1643-100 Features


28-DIP Module (0.600, 15.24mm) package
28 terminations
28 pin count
5V power supplies
Be maintained at 5V for high efficiency.


DS1643-100 Applications


There are a lot of Maxim Integrated
DS1643-100 Real Time Clocks applications.


  • Electronic metering
  • Battery powered products
  • Automotive
  • Industrial
  • Digital still camera
  • Digital video camera
  • Printers
  • Copy machines
  • Mobile equipment
  • Battery powered devices

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