DS1390 Datasheet, PDF (2/24 Pages) Maxim Integrated Products – Low-Voltage SPI/3-Wire RTCs with Trickle Charger

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V_CC Pin Relative to Ground .....-0.3V to +6.0V
Voltage Range on Inputs Relative
to Ground ...............................................-0.3V to (V_CC + 0.3V)
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature .......................................See IPC/JEDEC
J-STD-020A Specification
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_CC = V_CC(MIN) to V_CC(MAX), T_A = -40°C to +85°C, unless otherwise noted. Typical values are at nominal supply voltage and T_A = +25°C,
unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage (Note 2)
Logic 1
SYMBOL
V_CC
DS139x-33
DS139x-3
DS139x-18
V_IH
(Note 2)
CONDITIONS
Logic 0
Supply Voltage, Pullup
SQW/INT, SQW, INT, V_CC = 0V
V_BACKUP Voltage (Note 2)
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 SQW/INT;
DS1392 SQW, INT;
DS1391/DS1393 RST)
V_CC Active Supply Current
(Note 10)
V_IL
(Note 2)
V_PU
(Note 2)
V_BACKUP
V_PF
R1
R2
R3
I_LI
I_LO
I_LORST
I_OHDOUT
I_OHDOUT
-33
-3
-18
-33
-3
-18
(Notes 3, 4)
(Notes 3, 5)
(Notes 3, 6)
(Note 7)
(Note 8)
(Note 9)
-33, -3 (V_OH = 0.85 x V_CC)
-18 (V_OH = 0.80 x V_CC)
-33, -3 (V_OL = 0.15 x V_CC)
-18 (V_OL = 0.20 x V_CC)
I_OLSIR
V_CC > 1.71V; V_OL = 0.4V
1.3V < V_CC < 1.71V; V_OL = 0.4V
-33
I_CCA
-3
-18
MIN
2.97
2.7
1.71
0.7 x
V_CC
-0.3
1.3
1.3
1.3
2.70
2.45
1.51
-1
-1
-200
TYP MAX UNITS
3.3
5.50
3.0
3.3
V
1.8
1.89
V_CC +
0.5
V
+0.3 x
V_CC
V
5.5
V
3.0 V_CC(MAX)
3.0
3.7
V
3.0
3.7
2.88 2.97
2.6
2.70
V
1.6
1.71
250
2000
Ω
4000
+1
µA
+1
µA
+10
µA
-1
mA
0.750
3
mA
2
3.0
mA
250
µA
2
mA
2
500
µA
2 _____________________________________________________________________