DS1251W-120IND Overview
real time clocks is located in package 32-DIP Module (0.600, 15.24mm).As of Tube, time clock is packaged in this way.There is 2.97V~3.63V voltage supply for this electrical RTC.It can be said that this electrical real time clock belongs to the Phantom Time Chip type.The real time clock (RTC) that is mounted in the way of Through Hole is connected to this circuit board.In order to operate properly, the temperature should be -40°C~85°C.During the course of operation, Leap Year, NVSRAM can be ensured.There is the possibility of terminating transmission lines with 32 terminations, which means that the equipment used to terminate the line will match its characteristic impedance.In this case, the voltage supplied to the electronic component is 3.3V.A total of 32 pins are included in this product.DS1251 are the family name of RTCs .For the purpose of storing data and programs, the RTC times are embedded with a storage capacity of 512KB.Mounting type Through Hole matches the RTC module.A total of 32 pins are attached to this real time clock.Maintaining the supply voltage at 3.3V is the key to high efficiency.There is a frequency of 120GHz that can be achieved.
DS1251W-120IND Features
32-DIP Module (0.600, 15.24mm) package
32 terminations
32 pin count
Be maintained at 3.3V for high efficiency.

DS1251W-120IND Applications
There are a lot of Maxim Integrated
DS1251W-120IND Real Time Clocks applications.

Copy machines
Mobile equipment
Battery powered devices
Printers and copiers
Electronic metering
Digital cameras
White goods
Elapsed time counter
Network powered devices
Battery backed up systems

Mount	Through Hole
Mounting Type	Through Hole
Package / Case	32-DIP Module (0.600, 15.24mm)
Number of Pins	32
Operating Temperature	-40°C~85°C
Packaging	Tube
Published	2005
JESD-609 Code	e0
Feature	Leap Year, NVSRAM
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	32
ECCN Code	3A991.B.2.A
Type	Phantom Time Chip
Terminal Finish	Tin/Lead (Sn/Pb)
HTS Code	8473.30.11.40
Voltage - Supply	2.97V~3.63V
Terminal Position	DUAL
Supply Voltage	3.3V
Terminal Pitch	2.54mm
Frequency	120GHz
Base Part Number	DS1251
Pin Count	32
Operating Supply Voltage	3.3V
Interface	Parallel
Memory Size	512KB
Access Time	120 ns
Logic Function	Clock
External Data Bus Width	8
Time Format	HH:MM:SS:hh (12/24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	7mA @ 3.3V
Time-Min	1/100SECOND
Interrupt Capability	N
Volatile	NO
Length	43.053mm
Height Seated (Max)	10.922mm
Width	15.24mm
Radiation Hardening	No
RoHS Status	Non-RoHS Compliant
Lead Free	Contains Lead