DS1643-70+ Overview
In package 28-DIP Module (0.600, 15.24mm), real time clocks can be found.In this case, time clock is packaged in the way of Tube.A voltage of 4.5V~5.5V is supplied to this electrical RTC.Electrical real time clock type Clock/Calendar.There is an electronic component mounted in the way of Through Hole.Ideally, the operating temperature should be 0°C~70°C.During operation, the value of Leap Year, NVSRAM can be ensured.It is possible to terminate transmission lines with 28 terminations, which means that the RTC module terminating the line matches its characteristic impedance.This electronic component receives a voltage of 5V.There are 28 pins on it.This object belongs to the family DS1643.A memory of 8KB is embedded in the RTC times, which can be used to store programs and data.0.032MHz should be the maximum output frequency.For the purpose of powering the real time clock, the power supply is set to 5V.1 timers are control real time clocks that emits a signal after receiving an input signal at a predetermined time.
DS1643-70+ Features
28-DIP Module (0.600, 15.24mm) package
28 terminations
28 pin count
5V power supplies

DS1643-70+ Applications
There are a lot of Maxim Integrated
DS1643-70+ Real Time Clocks applications.

Digital still camera
Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices
Printers and copiers
Electronic metering
Digital cameras
White goods

Mounting Type	Through Hole
Package / Case	28-DIP Module (0.600, 15.24mm)
Surface Mount	NO
Operating Temperature	0°C~70°C
Packaging	Tube
Published	2010
JESD-609 Code	e3
Feature	Leap Year, NVSRAM
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	28
ECCN Code	EAR99
Type	Clock/Calendar
Terminal Finish	Matte Tin (Sn)
HTS Code	8542.39.00.01
Voltage - Supply	4.5V~5.5V
Terminal Position	DUAL
Peak Reflow Temperature (Cel)	260
Supply Voltage	5V
Terminal Pitch	2.54mm
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Base Part Number	DS1643
Pin Count	28
JESD-30 Code	R-XDMA-P28
Qualification Status	Not Qualified
Power Supplies	5V
Interface	Parallel
Memory Size	8KB
Clock Frequency	0.032MHz
External Data Bus Width	8
Number of Timers	1
Time Format	HH:MM:SS (24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	3mA @ 5V
Time-Min	SECONDS
Interrupt Capability	N
Volatile	NO
Length	37.595mm
Height Seated (Max)	9.02mm
Width	15.24mm
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free