Home  DS1687-3+  DS1687-3+ VS DS1687-3IND+

DS1687-3 vs DS1687-3+ vs DS1687-3IND+ Comparison

  • Hide Shared Attributes
    DS1687-3
    DS1687-3
    DS1687-3+
    DS1687-3+
    DS1687-3IND+
    DS1687-3IND+
  • Part No.
    DS1687-3
    DS1687-3+
    DS1687-3IND+
  • Description
    Real Time Clock Multiplexed 242Byte Clock/Calendar/Alarm 24Pin EDIP
    Real Time Clock (RTC) IC Clock/Calendar 242B Parallel 24-DIP Module (0.600", 15.24mm)
    Timer IC t- real time clock Maxim Integrated DS1687-3IND+ Clock/calendar EDIP 24
  • Manufacturer
    Maxim integrated
    Maxim integrated
    Maxim integrated
  • Classification
    Real Time Clocks
    Real Time Clocks
    Real Time Clocks
  • Reference Price(USD)
    $4.970
    $3.687
    $4.129
  • Inventory(pcs)
    98
    145
    65
  • Case/Package
    DIP-24
    DIP-24
    DIP-24
  • Number of Pins
    24
    24
    24
  • Memory Size
    242 B
    242 B
    -
  • Number of Positions
    -
    24
    24
  • Supply Voltage (DC)
    2.70V (max)
    2.70V (max)
    2.70V (min)
  • ECCN Code
    -
    -
    EAR99
  • Operating Temperature
    0℃ ~ 70℃
    0℃ ~ 70℃
    -40℃ ~ 85℃
  • Size-Length
    -
    -
    38.1 mm
  • Size-Width
    -
    -
    18.29 mm
  • Size-Height
    -
    -
    10.67 mm
  • Mounting Style
    Through Hole
    Through Hole
    Through Hole
  • Packaging
    Tube
    Tube
    Each
  • Lead-Free Status
    Contains Lead
    Lead Free
    Lead Free
  • RoHS
    Non-Compliant
    RoHS Compliant
    RoHS Compliant
  • Product Lifecycle Status
    Unknown
    Unknown
    Unknown
  • Supply Voltage (Max)
    -
    3.7 V
    3.7 V
  • Supply Voltage (Min)
    -
    2.7 V
    2.7 V
  • Supply Voltage
    2.5V ~ 3.7V
    2.5V ~ 3.7V
    2.7V ~ 3.7V
  • Operating Temperature (Max)
    -
    70 ℃
    85 ℃
  • Operating Temperature (Min)
    -
    0 ℃
    -40 ℃
  • Overview
    DS1687-3 Product overview

    DETAILED DESCRIPTION The DS1685/DS1687 are real-time clocks (RTC) designed as successors to the industry-standard DS1285, DS1385, DS1485, and DS1585 PC RTCs. These devices provide the industry-standard DS1285 clock function with either +3.0V or +5.0V operation. The DS1685 also incorporates a number of enhanced features including a silicon serial number, power-on/off control circuitry, 242 bytes of user NV SRAM, and 32.768kHz output for sustaining power management activities. FEATURES ■ Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as Y2K Compliant ■ +3V or +5V Operation ■ 64-Bit Silicon Serial Number ■ Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure ■ 32kHz Output for Power Management ■ Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal ■ SMI Recovery Stack ■ 242 Bytes Battery-Backed NV RAM ■ Auxiliary Battery Input ■ RAM Clear Input ■ Century Register ■ Date Alarm Register ■ Compatible with Existing BIOS for Original DS1287 Functions ■ Available as Chip (DS1685) or Stand-Alone Encapsulated DIP (EDIP) with Embedded Battery and Crystal (DS1687) ■ Timekeeping Algorithm Includes Leap-Year Compensation Valid Through 2099 ■ Underwriters Laboratory (UL) Recognized APPLICATIONS   Embedded Systems   Utility Meters   Security Systems   Network Hubs, Bridges, and Routers

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    DS1687-3+ Product overview

    The DS1687-3+ is a real time clock with +3V operation in 24 pin EDIP package. It is designed as successors to the industry standard DS1285, DS1385, DS1485 and DS1585 PC RTCs. The device provides industry standard DS1285 clock function with +3V operation. The DS1687 incorporates a DS1685 chip, 32.768KHz crystal and lithium battery in a complete, self contained timekeeping EDIP package. The entire unit is fully tested such that a minimum of 10 years of timekeeping and data retention in the absence of VCC is provided. Power control circuitry allows the system to be powered on by an external stimulus such as a keyboard or by a time and date (wake-up) alarm. The PWR output pin can be triggered by one or either of these events and can be used to turn on an external power supply. It is used in embedded systems, utility meters, network hubs, bridges and routers. The crystal select bit allows RTC to operate with 6pF or 12.5pF crystal.

    .
    Supply voltage range from 2.7V to 3.7V
    .
    Operating temperature range from 0°C to 70°C
    .
    Incorporates industry standard DS1287 PC clock and enhanced features such as Y2K compliant
    .
    Time keeping current of 400nA
    .
    SMI recovery stack and multiplexed interface
    .
    Auxiliary battery input, RAM clear input, century register and date alarm register
    .
    Compatible with existing BIOS for original DS1287 functions
    .
    Timekeeping algorithm includes leap year compensation valid through 2099
    .
    UL recognized
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    DS1687-3IND+ Product overview

    The DS1687-3IND+ is a real time clock with +3V operation in 24 pin EDIP package. It is designed as successors to the industry standard DS1285, DS1385, DS1485 and DS1585 PC RTCs. The device provides industry standard DS1285 clock function with +3V operation. The DS1687 incorporates a DS1685 chip, 32.768KHz crystal and lithium battery in a complete, self contained timekeeping EDIP package. The entire unit is fully tested such that a minimum of 10 years of timekeeping and data retention in the absence of VCC is provided. Power control circuitry allows the system to be powered on by an external stimulus such as a keyboard or by a time and date (wake-up) alarm. The PWR output pin can be triggered by one or either of these events and can be used to turn on an external power supply. It is used in embedded systems, utility meters, network hubs, bridges and routers. The crystal select bit allows RTC to operate with 6pF or 12.5pF crystal.

    .
    Supply voltage range from 2.7V to 3.7V
    .
    Operating temperature range from -40°C to 85°C
    .
    Incorporates industry standard DS1287 PC clock and enhanced features such as Y2K compliant
    .
    Time keeping current of 400nA
    .
    SMI recovery stack and multiplexed interface
    .
    Auxiliary battery input, RAM clear input, century register and date alarm register
    .
    Compatible with existing BIOS for original DS1287 functions
    .
    Timekeeping algorithm includes leap year compensation valid through 2099
    .
    UL recognized
    View all

DS1687-3+ Alternative Parts

Image Part Compare Manufacturer Category Description
Image:DS1687-3+ Mfr.Part#:DS1687-3+ Compare: Current Part Manufacturers:Maxim integrated Category:Real Time Clocks Description:Real N/Ame clock (rtc) ic clock/calendar 242b parallel 24-dip module (0.600", 15.24mm)
Image:DS1687-3 Mfr.Part#:DS1687-3 Compare: DS1687-3+ VS DS1687-3 Manufacturers:Maxim integrated Category:Real Time Clocks Description:Real N/Ame clock mulN/Aplexed 242byte clock/calendar/alarm 24pin edip
Image:DS1687-3IND+ Mfr.Part#:DS1687-3IND+ Compare: DS1687-3+ VS DS1687-3IND+ Manufacturers:Maxim integrated Category:Real Time Clocks Description:N/Amer ic t- real N/Ame clock maxim integrated ds1687-3ind+ clock/calendar edip 24
Image:DS1687-3IND Mfr.Part#:DS1687-3IND Compare: DS1687-3+ VS DS1687-3IND Manufacturers:Maxim integrated Category:Real Time Clocks Description:Real N/Ame clock mulN/Aplexed 242byte clock/calendar/alarm 24pin edip