DS1391 Maxim, DS1391 Datasheet - Page 2

• Manufacturer Part Number: DS1391
• Description: The low-voltage serial-peripheral interface (SPI™) DS1390/DS1391/DS1394 and the low-voltage 3-wire DS1392/DS1393 real-time clocks (RTCs) are clocks/calendars that provide hundredths of a second, seconds, minutes, hours, day, date, month, and ye
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
Voltage Range on Inputs Relative
Operating Temperature Range ...........................-40°C to +85°C
Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
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
unless otherwise noted.) (Note 1)
2
Supply Voltage (Note 2)
Logic 1
Logic 0
Supply Voltage, Pullup
SQW/INT, SQW, INT, V
V
Power-Fail Voltage (Note 2)
Trickle-Charge Current-Limiting
Resistors
Input Leakage
I/O Leakage
RST Pin I/O Leakage
DOUT Logic 1 Output
DOUT Logic 0 Output
Logic 0 Output
(DS1390/DS1393/DS1394
SQW/INT; DS1392 SQW, INT;
DS1391/DS1393 RST)
V
(Note 10)
CC
to Ground ...............................................-0.3V to (V
BACKUP
CC
_____________________________________________________________________
= V
Active Supply Current
CC(MIN)
PARAMETER
Voltage (Note 2)
to V
CC
CC(MAX)
Pin Relative to Ground .....-0.3V to +6.0V
CC
= 0V
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at nominal supply voltage and T
SYMBOL
V
I
I
OHDOUT
OHDOUT
I
BACKUP
I
LORST
OLSIR
I
V
V
V
CCA
V
V
I
R1
R2
R3
I
LO
CC
PU
PF
LI
IH
IL
DS139x-33
DS139x-3
DS139x-18
(Note 2)
(Note 2)
(Note 2)
-33
-3
-18
-33
-3
-18
(Notes 3, 4)
(Notes 3, 5)
(Notes 3, 6)
(Note 7)
(Note 8)
(Note 9)
-33, -3 (V
-18 (V
-33, -3 (V
-18 (V
V
1.3V < V
-33
-3
-18
CC
CC
> 1.71V; V
+ 0.3V)
OH
OL
CC
= 0.20 x V
OH
= 0.80 x V
OL
< 1.71V; V
= 0.15 x V
= 0.85 x V
OL
CONDITIONS
= 0.4V
CC
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature...........................Refer to the IPC/JEDEC
CC
)
)
CC
OL
CC
)
)
= 0.4V
0.7 x
2.97
1.71
2.70
2.45
1.51
-200
MIN
V
-0.3
2.7
1.3
1.3
1.3
-1
-1
CC
2000
4000
TYP
2.88
250
3.3
3.0
1.8
3.0 V
3.0
3.0
2.6
1.6
J-STD-020 Specification.
CC(MAX)
V
+0.3 x
0.750
MAX
5.50
1.89
V
2.97
2.70
1.71
+10
CC
250
500
3.3
0.5
5.5
3.7
3.7
3.0
+1
+1
-1
CC
3
2
2
2
+
A
= +25°C,
UNITS
mA
mA
mA
mA
μA
μA
μA
μA
μA
V
V
V
V
V
V