DS1687-3 Maxim Integrated Products, DS1687-3 Datasheet - Page 29
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DS1687-3
Manufacturer Part Number
DS1687-3
Description
IC RTC 3V 64-BIT Y2K 24-EDIP
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/NVSRAM/Y2Kr
Datasheet
1.DS1685S-5.pdf
(34 pages)
Specifications of DS1687-3
Memory Size
242B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
2.7 V ~ 3.7 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
24-DIP (600 mil) Module
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS1687-3
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS1687-3+
Manufacturer:
Maxim
Quantity:
14
Company:
Part Number:
DS1687-3+
Manufacturer:
ELHA
Quantity:
6 000
Company:
Part Number:
DS1687-3IND
Manufacturer:
MAXIM
Quantity:
2 450
Company:
Part Number:
DS1687-3IND+
Manufacturer:
LT
Quantity:
665
POWER-UP/DOWN TIMING—5V
(T
POWER-UP/DOWN TIMING—3V
(T
WARNING: Under no circumstances are negative undershoots, of any amplitude, allowed
when device is in battery-backup mode.
CAPACITANCE
(T
WAKE-UP/KICKSTART TIMING
(T
CS High to Power-Fail
Recovery at Power-Up
V
V
V
Expected Data Retention
CS High to Power-Fail
Recovery at Power-Up
V
V
Expected Data Retention
Input Capacitance on All Inputs
Except X1 and X2
Output Capacitance on IRQ,
SQW and DQ pins
Kickstart Input Pulse Width
Wake-Up/Kickstart Power On
Timeout
A
A
A
A
CC
CC
CC
CC
CC
= +25°C)
= +25°C)
= +25°C)
= +25°C)
Slew Rate Power-Down
Slew Rate Power-Down
Slew Rate Power-Up
Slew Rate Power-Down
Slew Rate Power-Up
PARAMETER
PARAMETER
PARAMETER
PARAMETER
4.5V V
2.7V V
4.0 V
3.0 V
2.5 V
SYMBOL
SYMBOL
t
t
C
KSPW
POTO
SYMBOL
SYMBOL
C
OUT
IN
t
t
t
t
t
REC
t
t
REC
CC
CC
CC
t
t
t
DR
t
DR
PF
FB
PF
R
CC
R
CC
F
F
4.5V
4.0V
2.7V
4.0V
2.5V
29 of 34
MIN
MIN
2
2
MIN
MIN
300
300
10
10
10
0
0
TYP
TYP
TYP
TYP
150
150
DS1685/DS1687 3V/5V Real-Time Clocks
MAX
MAX
MAX
MAX
12
12
0
0
seconds
UNITS
UNITS
UNITS
UNITS
years
years
ms
ms
s
pF
pF
ns
s
s
s
ns
s
s
NOTES
NOTES
NOTES
NOTES
9, 10
9, 10
7