DS1685QN-3 Overview
A package named 28-LCC (J-Lead) contains real time clocks.Tube is the packaging method.There is 2.7V~3.7V supply voltage for this electrical RTC.Electrical real time clocks of this type are Clock/Calendar.real time clock (RTC)s like this are mounted in the way of Surface Mount.-40°C~85°C is the operating temperature.When operating, you can ensure Alarm, NVSRAM, Square Wave Output, Y2K.A transmission line can have a 28 termination by terminating it with a RTC module whose characteristic impedance matches the line's.In the case of this RTC real time clock, there is 3V voltage supplied to it.The RTCs are equipped with 28 pins.This electrical digital time clock is powered by 2.5V~3.7V voltage.Programs and data can be stored in the 242B memory embedded in the RTC times.There should not be a frequency higher than 0.032MHz in the output.1 timers are used in this system. They output a signal after an input signal is received at a predetermined time.
DS1685QN-3 Features
28-LCC (J-Lead) package
28 terminations
28 pin count

DS1685QN-3 Applications
There are a lot of Rochester Electronics, LLC
DS1685QN-3 Real Time Clocks applications.

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

Mounting Type	Surface Mount
Package / Case	28-LCC (J-Lead)
Surface Mount	YES
Operating Temperature	-40°C~85°C
Packaging	Tube
JESD-609 Code	e0
Feature	Alarm, NVSRAM, Square Wave Output, Y2K
Pbfree Code	no
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	28
Type	Clock/Calendar
Terminal Finish	TIN LEAD
Voltage - Supply	2.7V~3.7V
Terminal Position	QUAD
Peak Reflow Temperature (Cel)	NOT SPECIFIED
Supply Voltage	3V
Terminal Pitch	1.27mm
Reach Compliance Code	unknown
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Pin Count	28
JESD-30 Code	S-PQCC-J28
Qualification Status	COMMERCIAL
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
Voltage - Supply, Battery	2.5V~3.7V
Length	11.505mm
Height Seated (Max)	4.57mm
Width	11.505mm
RoHS Status	Non-RoHS Compliant