DS1685Q-3+ Overview
real time clocks is located in package 28-LCC (J-Lead).As of Tube, time clock is packaged in this way.There is 2.7V~3.7V voltage supply for this electrical RTC.It can be said that this electrical real time clock belongs to the Clock/Calendar type.The real time clock (RTC) that is mounted in the way of Surface Mount is connected to this circuit board.In order to operate properly, the temperature should be 0°C~70°C.During the course of operation, Alarm, NVSRAM, Square Wave Output, Y2K can be ensured.There is the possibility of terminating transmission lines with 28 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 3V.A total of 28 pins are included in this product.DS1685 are the family name of RTCs .As far as the supply voltage for this electrical digital time clock is concerned, it is 2.5V~3.7V.For the purpose of storing data and programs, the RTC times are embedded with a storage capacity of 242B.There should be no frequency greater than 0.032MHz in real time clocks' output.For powering the real time clock, a power supply with a voltage of 3V is used.1 timer real time clocks send out a signal at a preset time based on input signals.
DS1685Q-3+ Features
28-LCC (J-Lead) package
28 terminations
28 pin count
3V power supplies

DS1685Q-3+ Applications
There are a lot of Maxim Integrated
DS1685Q-3+ 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

Factory Lead Time	8 Weeks
Mounting Type	Surface Mount
Package / Case	28-LCC (J-Lead)
Surface Mount	YES
Operating Temperature	0°C~70°C
Packaging	Tube
Published	2000
JESD-609 Code	e3
Feature	Alarm, NVSRAM, Square Wave Output, Y2K
Pbfree Code	yes
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	8473.30.11.80
Voltage - Supply	2.7V~3.7V
Terminal Position	QUAD
Peak Reflow Temperature (Cel)	260
Supply Voltage	3V
Terminal Pitch	1.27mm
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Base Part Number	DS1685
Pin Count	28
JESD-30 Code	S-PQCC-J28
Qualification Status	Not Qualified
Power Supplies	3V
Interface	Parallel
Memory Size	242B
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
Time-Min	SECONDS
Interrupt Capability	Y
Voltage - Supply, Battery	2.5V~3.7V
Volatile	YES
Length	11.505mm
Height Seated (Max)	4.57mm
Width	11.505mm
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free