DS1689SN+ Overview
28-SOIC (0.295, 7.50mm Width) contains real time clocks.A Tube package is used to package time clock.Its supply voltage is 2.7V~3.3V 4.5V~5.5V.It is a Clock/Calendar type electrical real time clock.A part of this electronic RTC module is mounted in the way of Surface Mount.Electronic time clocks should be -40°C~85°C degrees Celsius during operation.Electronic time clocks are possible to guarantee NVSRAM when operating.Transmission lines can be terminated with 28 terminations, which means that the RTC module that terminates the line matches its characteristic impedance.In this RTC real time clock, there is a voltage of 3V supplied to it.28 pins are present on it.DS1689 are RTC s family.2.5V~3.7V is the supply voltage of this electrical digital time clock.A memory of 114B is embedded into the RTC times for storing programs and data.A frequency of 0.032MHz should not be exceeded by real time clocks' output.The power supply is 3/5V.1 timers are in the real time clock that outputs a signal in response to an input signal.In addition, it is characterized by CAN ALSO OPERATE WITH 5V SUPPLY.16 Bits are used in the design of this digital time clock.
DS1689SN+ Features
28-SOIC (0.295, 7.50mm Width) package
28 terminations
28 pin count
3/5V power supplies
16 Bits

DS1689SN+ Applications
There are a lot of Maxim Integrated
DS1689SN+ Real Time Clocks applications.

Battery powered products
Automotive
Industrial
Digital still camera
Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices
Printers and copiers

Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295, 7.50mm Width)
Surface Mount	YES
Operating Temperature	-40°C~85°C
Packaging	Tube
Published	2005
JESD-609 Code	e3
Feature	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)
Additional Feature	CAN ALSO OPERATE WITH 5V SUPPLY
HTS Code	8542.39.00.01
Voltage - Supply	2.7V~3.3V 4.5V~5.5V
Terminal Position	DUAL
Peak Reflow Temperature (Cel)	NOT SPECIFIED
Supply Voltage	3V
Terminal Pitch	1.27mm
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Base Part Number	DS1689
Pin Count	28
JESD-30 Code	R-PDSO-G28
Qualification Status	Not Qualified
Power Supplies	3/5V
Interface	Parallel
Memory Size	114B
Number of Bits	16
Clock Frequency	0.032MHz
External Data Bus Width	8
Number of Timers	1
Time Format	HH:MM:SS (12/24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	2mA @ 3V 3mA @ 5V
Time-Min	SECONDS
Interrupt Capability	Y
Voltage - Supply, Battery	2.5V~3.7V
Volatile	YES
Length	18.1mm
Height Seated (Max)	3.05mm
Width	8.565mm
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free