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DS1644-120+

DS1644-120+

DS1644-120+

Maxim Integrated

28 Terminations 5V 28 Pin DS1644 Real Time Clocks Leap Year, NVSRAM

SOT-23

DS1644-120+ Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mounting Type Through Hole
Package / Case 28-DIP Module (0.600, 15.24mm)
Surface MountNO
Number of Pins 28
Operating Temperature0°C~70°C
PackagingTube
Published 2005
JESD-609 Code e3
Feature Leap Year, NVSRAM
Pbfree Code yes
Part StatusObsolete
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 28
ECCN Code EAR99
Type Clock/Calendar
Terminal Finish Matte Tin (Sn)
HTS Code8473.30.11.80
Voltage - Supply 4.5V~5.5V
Terminal Position DUAL
Peak Reflow Temperature (Cel) NOT SPECIFIED
Supply Voltage 5V
Terminal Pitch2.54mm
Reach Compliance Code not_compliant
Time@Peak Reflow Temperature-Max (s) NOT SPECIFIED
Base Part Number DS1644
Pin Count28
Qualification StatusNot Qualified
Power Supplies5V
Interface Parallel
Memory Size32KB
Access Time 120 ns
External Data Bus Width 8
Time FormatHH:MM:SS (24 hr)
Date FormatYY-MM-DD-dd
Current - Timekeeping (Max) 4mA @ 4.5V~5.5V
Time-Min SECONDS
Interrupt CapabilityN
Volatile NO
RoHS StatusROHS3 Compliant
Lead Free Lead Free
In-Stock:3074 items

DS1644-120+ Product Details

DS1644-120+ Overview


The package 28-DIP Module (0.600, 15.24mm) contains real time clocks.The package is in the form of Tube.This electrical RTC has a supply voltage of 4.5V~5.5V.This electrical real time clock has the type Clock/Calendar.Through Hole is the way this real time clock (RTC) is mounted.Electronic time clocks are recommended that the operating temperature be 0°C~70°C.When operating, Leap Year, NVSRAM can be ensured.It is possible to terminate a transmission line with a RTC module that matches the characteristic impedance of the line, which is known as 28 termination.Obviously, a voltage of 5V is being supplied to this electronic component.There are 28 pins on it.The family RTCs belongs to are DS1644.For storing data and programs, the RTC times embed a memory of 32KB.There are 5V power supplies attached to it.It is equipped with 28 pins.

DS1644-120+ Features


28-DIP Module (0.600, 15.24mm) package
28 terminations
28 pin count
5V power supplies


DS1644-120+ Applications


There are a lot of Maxim Integrated
DS1644-120+ Real Time Clocks applications.


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

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