DS1375 Maxim, DS1375 Datasheet - Page 2

• Manufacturer Part Number: DS1375
• Description: The DS1375 digital real-time clock (RTC) is a low-power clock/calendar that does not require a crystal
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
Voltage Range on SDA, SCL, and WDS
Operating Temperature Range ...........................-40°C to +85°C
I
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED DC OPERATING CONDITIONS
(V
wise noted.) (Note 1)
2
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Supply Voltage
Timekeeping Voltage
Input Logic 1 (SDA, SCL)
Supply Voltage, Pullup
(SQW/INT, CLK)
Input Logic 0
Input Leakage (SCL, CLK)
I/O Leakage (SDA, SQW/INT)
SDA Logic 0 Output
SQW/INT Logic 0 Output
Active Supply Current
Standby Current
2
CC
Relative to Ground.............................................-0.3V to +6.0V
Relative to Ground ....................................-0.3V to V
C Digital Input RTC with Alarm
_____________________________________________________________________
= +1.7V to +5.5V, T
PARAMETER
Limits at -40°C are guaranteed by design and not production tested.
All voltages are referenced to ground.
For the CLK pin, input voltages above V
exceed the current drawn by the circuit that is connected to V
voltage level on the V
V
I
CLK pin running at 32,768Hz, rise and fall times at 10ns or less.
Specified with I
CCA
IL MIN
—SCL clocking at max frequency = 400kHz.
on the CLK pin can exceed -0.3V as long as the current is limited to less than 1mA.
CC
Pin
A
2
= -40°C to +85°C, unless otherwise noted. Typical values are at V
C bus inactive.
CC
bus.
SYMBOL
V
I
I
OLSQW
PULLUP
OLSDA
I
I
V
V
V
CCA
CCS
V
I
I
LO
CC
TK
LI
IH
IL
(Note 2)
(Note 2)
(Note 2)
(Notes 2, 3)
(Notes 2, 4)
V
V
V
1.7V < V
1.3V < V
(Notes 5, 6)
(Notes 6, 7)
CC
CC
CC
CC
CC
> 2V; V
< 2V; V
> 2V; V
+ 0.3V cause current to flow into the device. The input current must not
+ 0.3V
CC
CC
< 2V; V
< 1.7V; V
OL
OL
OL
CONDITIONS
= 0.4V
= 0.2 x V
= 0.4V
OL
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature...........................Refer to the IPC/JEDEC
OL
= 0.2 x V
CC
CC
= 0.2 x V
. Otherwise, current flows out of the DS1375, raising the
CC
CC
CC
0.7 x V
MIN
-0.3
1.7
1.3
-1
-1
= 3.3V, T
CC
TYP
150
3.3
33
A
J-STD-020 Specification.
= +25°C, unless other-
V
CC
MAX
+0.3
V
250
150
500
+ 0.3
5.5
5.5
5.5
3.0
3.0
+1
+1
CC
UNITS
mA
mA
µA
µA
µA
µA
nA
V
V
V
V
V