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DS1688S

DS1688S

DS1688S

Rochester Electronics, LLC

28 Terminations 3V 28 Pin Real Time Clocks Alarm, Leap Year, Square Wave Output, Unique ID 0.032MHz

SOT-23

DS1688S Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mounting Type Surface Mount
Package / Case 28-SOIC (0.295, 7.50mm Width)
Surface MountYES
Operating Temperature0°C~70°C
PackagingTube
JESD-609 Code e0
Feature Alarm, Leap Year, Square Wave Output, Unique ID
Pbfree Code no
Part StatusObsolete
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 28
Type Clock/Calendar
Terminal Finish TIN LEAD
Additional FeatureCAN ALSO OPERATE WITH 5V SUPPLY
Voltage - Supply 2.7V~3.3V 4.5V~5.5V
Terminal Position DUAL
Peak Reflow Temperature (Cel) 240
Supply Voltage 3V
Terminal Pitch1.27mm
Time@Peak Reflow Temperature-Max (s) 20
Pin Count28
JESD-30 Code R-PDSO-G28
Qualification StatusCOMMERCIAL
Interface Parallel
Memory Size114B
Number of Bits 16
Clock Frequency 0.032MHz
External Data Bus Width 8
Number of Timers 1
Time FormatHH:MM:SS (12/24 hr)
Date FormatYY-MM-DD
Length 18.1mm
Height Seated (Max) 3.05mm
Width 8.565mm
RoHS StatusNon-RoHS Compliant
In-Stock:1019 items

Pricing & Ordering

QuantityUnit PriceExt. Price
1$7.77000$7.77
500$7.6923$3846.15
1000$7.6146$7614.6
1500$7.5369$11305.35
2000$7.4592$14918.4
2500$7.3815$18453.75

DS1688S Product Details

DS1688S 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 0°C~70°C degrees Celsius during operation.Electronic time clocks are possible to guarantee Alarm, Leap Year, Square Wave Output, Unique ID 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.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.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.

DS1688S Features


28-SOIC (0.295, 7.50mm Width) package
28 terminations
28 pin count
16 Bits


DS1688S Applications


There are a lot of Rochester Electronics, LLC
DS1688S 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

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