DS1344E-3+ Overview
There is an embedded version of real time clocks in the package 20-TSSOP (0.173, 4.40mm Width).This package has a package type of Tube.Electrical RTCs such as this have a 2.7V~5.5V supply.In this case, we are dealing with an electrical real time clock that has a type of Clock/Calendar.It should be noted that the real time clock (RTC) is mounted in the way of Surface Mount.Electronic time clocks are recommended to operate at a temperature of -40°C~85°C.If Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger is ensured when operating, then the operation will be successful.There are 20 terminations for transmission lines, which means that the RTC module that terminates the line matches its characteristic impedance.This RTC real time clock has a voltage supply of 3V which is provided to it.A total of 20 pins are attached to this RTCs.There are a family named DS1344 that consarets of the RTCs .In this electrical digital time clock, the supply voltage is 1.3V~5.5V.In the RTC times, there is a memory of 96B that is available for storing programs as well as data.Ensure that the output frequency does not exceed 4MHz.In this case, the RTC module is mounted in the way of Surface Mount.As a power supply for the real time clock, a value of 3V is used.A total of 20 pins are equipped with the real time clock.Following an input signal, there are 1 timers that output a signal at a preset time.RTC time is essential that the supply voltage remain at 3V for maximum efficiency.
DS1344E-3+ Features
20-TSSOP (0.173, 4.40mm Width) package
20 terminations
20 pin count
3V power supplies
Be maintained at 3V for high efficiency.

DS1344E-3+ Applications
There are a lot of Maxim Integrated
DS1344E-3+ Real Time Clocks applications.

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

Factory Lead Time	6 Weeks
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	20-TSSOP (0.173, 4.40mm Width)
Number of Pins	20
Operating Temperature	-40°C~85°C
Packaging	Tube
Published	2002
Feature	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	20
ECCN Code	EAR99
Type	Clock/Calendar
HTS Code	8542.39.00.01
Voltage - Supply	2.7V~5.5V
Terminal Position	DUAL
Supply Voltage	3V
Terminal Pitch	0.65mm
Base Part Number	DS1344
Pin Count	20
Operating Supply Voltage	3V
Power Supplies	3V
Interface	SPI
Memory Size	96B
Clock Frequency	4MHz
Logic Function	Clock
Number of Timers	1
Time Format	HH:MM:SS (12/24 hr)
Date Format	YY-MM-DD-dd
Time-Min	SECONDS
Interrupt Capability	Y
Voltage - Supply, Battery	1.3V~5.5V
Volatile	NO
Information Access Method	SERIAL, 3-WIRE
Length	6.5mm
Height Seated (Max)	1.1mm
Width	4.4mm
Radiation Hardening	No
RoHS Status	ROHS3 Compliant