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DS1687-3IND

Description
Real Time Clock 3V/5V RTC
Categorysemiconductor    Analog mixed-signal IC   
File Size485KB,34 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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DS1687-3IND Overview

Real Time Clock 3V/5V RTC

DS1687-3IND Parametric

Parameter NameAttribute value
Product CategoryReal Time Clock
ManufacturerMaxim
Mounting StyleThrough Hole
Package / CaseeDIP
RTC Bus InterfaceMultiplexed
Date FormatYY-MM-DD-dd, Binary
Time FormatHH:MM:SS, Binary
RTC Memory Size242 B
Supply Voltage - Max3.7 V
Supply Voltage - Min2.7 V
Maximum Operating Temperature+ 85 C
Minimum Operating Temperature- 40 C
PackagingTube
FunctionAlarm, Calendar, Clock
ProductReal Time Clocks
Factory Pack Quantity14
DS1685/DS1687
3V/5V Real-Time Clocks
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
PIN CONFIGURATIONS
TOP VIEW
PWR
X1
X2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
1
2
24
23
V
CC
V
BAUX
RCLR
V
BAT
IRQ
KS
RD
GND
WR
ALE
CS
AD0
AD1
AD2
AD3
AD4
AD5
N.C.
X2
X1
PWR
N.C.
V
CC
SQW
PWR
1
2
3
4
5
6
7
8
9
10
11
12
24
V
CC
SQW
V
BAUX
RCLR
N.C.
IRQ
KS
RD
N.C.
WR
ALE
CS
DS1685/
3
DS1685S/
22
4
DS1685E
21
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
V
BAUX
SQW
N.C.
N.C.
RCLR
V
BAT
IRQ
KS
RD
GND
WR
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
DS1687
23
22
21
20
19
18
17
16
15
14
13
5
6
7
8
9
10
4
3
2
1
28
27
26
25
24
23
22
21
20
DS1685Q
11
12
13 14
15 16
17
18
19
PDIP (0.600″)/
SO (0.300″)/
TSSOP (0.173″)
AD6
N.C.
AD7
GND
CS
ALE
N.C.
PLCC
EDIP (0.740″)
1 of 34
19-5215; Rev 10/12

DS1687-3IND Related Products

DS1687-3IND DS1685E-5 DS1685-5
Description Real Time Clock 3V/5V RTC Real Time Clock Real Time Clock 3V/5V RTC
Is it Rohs certified? - incompatible incompatible
Maker - Maxim Maxim
Parts packaging code - TSOP DIP
package instruction - 0.173 INCH, TSSOP-24 0.600 INCH, PLASTIC, DIP-24
Contacts - 24 24
Reach Compliance Code - not_compliant not_compliant
ECCN code - EAR99 EAR99
Factory Lead Time - 1 week 1 week
maximum clock frequency - 0.032 MHz 0.032 MHz
External data bus width - 8 8
Information access methods - PARALLEL, MUXED BUS PARALLEL, MUXED BUS
JESD-30 code - R-PDSO-G24 R-PDIP-T24
JESD-609 code - e0 e0
length - 7.8 mm 31.75 mm
Humidity sensitivity level - 1 1
Number of terminals - 24 24
Number of timers - 1 1
Maximum operating temperature - 70 °C 70 °C
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - TSSOP DIP
Encapsulate equivalent code - TSSOP24,.25 DIP24,.6
Package shape - RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH IN-LINE
Peak Reflow Temperature (Celsius) - 240 240
power supply - 5 V 5 V
Certification status - Not Qualified Not Qualified
Maximum seat height - 1.1 mm 5.08 mm
Maximum supply voltage - 5.5 V 5.5 V
Minimum supply voltage - 4.5 V 4.5 V
Nominal supply voltage - 5 V 5 V
surface mount - YES NO
technology - CMOS CMOS
Temperature level - COMMERCIAL COMMERCIAL
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - GULL WING THROUGH-HOLE
Terminal pitch - 0.65 mm 2.54 mm
Terminal location - DUAL DUAL
shortest time - SECONDS SECONDS
Maximum time at peak reflow temperature - 20 20
Volatile - YES YES
width - 4.4 mm 15.24 mm
uPs/uCs/peripheral integrated circuit type - TIMER, REAL TIME CLOCK TIMER, REAL TIME CLOCK
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