DS1340_11 Datasheet, PDF (2/16 Pages) Maxim Integrated Products – I2C RTC with Trickle Charger

I²C RTC with Trickle Charger
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V_CC Pin Relative to Ground .....-0.3V to +6.0V
Voltage Range on SDA, SCL, and FT/OUT
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
Lead Temperature (soldering, 10s) .................................+260°C
Soldering Temperature (reflow) .......................................+260°C
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 V_CC = 3.3V, T_A = +25°C, unless
otherwise noted.) (Note 1)
PARAMETER
Supply Voltage (Note 2)
Input Logic 1 (SDA, SCL)
Input Logic 0 (SDA, SCL)
Supply Voltage, Pullup
(FT/OUT, SDA, SCL), V_CC = 0V
Backup Supply Voltage (Note 2)
Trickle-Charge Current-Limiting
Resistors
Power-Fail Voltage (Note 2)
Input Leakage (SCL, CLK)
I/O Leakage (SDA, FT/OUT)
SDA Logic 0 Output
FT/OUT Logic 0 Output
Active Supply Current (Note 7)
Standby Current (Note 8)
V_BACKUP Leakage Current
SYMBOL
V_CC
V_IH
V_IL
DS1340-18
DS1340-3
DS1340-33
(Note 2)
(Note 2)
CONDITIONS
V_PU
(Note 2)
DS1340-18
V_BACKUP DS1340-3
DS1340-33
R1
(Notes 3, 4)
R2
(Note 5)
R3
(Note 6)
DS1340-18
V_PF
DS1340-3
DS1340-33
I_LI
I_LO
I_OLSDA
V_CC > 2V; V_OL = 0.4V
1.7V < V_CC < 2V; V_OL = 0.2 x V_CC
I_OLSQW
V_CC > 2V; V_OL = 0.4V
1.7V < V_CC < 2V; V_OL = 0.2 x V_CC
I_CCA
1.3V < V_CC < 1.7V; V_OL = 0.2x V_CC
DS1340-18; V_CC = 1.89V
DS1340-3; V_CC = 3.3V
DS1340-33; V_CC = 5.5V
I_CCS
DS1340-18; V_CC = 1.89V
DS1340-3; V_CC = 3.3V
DS1340-33; V_CC = 5.5V
I_BACKUPLKG V_BACKUP = 3.7V
MIN TYP MAX
1.71 1.8
5.5
2.7
3.0
5.5
2.97 3.3
5.5
0.7 x V_CC
-0.3
V_CC + 0.3
+0.3 x V_CC
UNITS
V
V
V
5.5
V
1.3
3.7
1.3
3.7
V
1.3
5.5
250
2000


4000
1.51 1.6 1.71
2.45 2.6
2.7
V
2.70 2.88 2.97
-1
+1
μA
-1
+1
μA
3.0
mA
3.0
3.0
mA
3.0
250
μA
72
150
108 200
μA
192 300
60
100
81
125
μA
100 150
100
nA
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