DS1374_10 Datasheet, PDF (2/18 Pages) Maxim Integrated Products – I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

I²C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V_CC Pin Relative to Ground .....-0.3V to +6.0V
Voltage Range on SDA or SCL
Relative to Ground ....................................-0.3V to V_CC + 0.3V
Junction-to-Ambient Thermal Resistance (θ_JA) (Note 1)
16-Pin SO .....................................................................73°C/W
10-Pin µSOP ...............................................................221°C/W
Junction-to-Case Thermal Resistance (θ_JC) (Note 1)
16-Pin SO .....................................................................23°C/W
10-Pin µSOP .................................................................39°C/W
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
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
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.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage
(Notes 3, 4)
Input Logic 1
DS1374-33
V_CC
DS1374-3
DS1374-18
V_IH
(Note 3)
Input Logic 0
Pullup Resistor Voltage (INT,
SQW, SDA, SCL), V_CC = 0V
Power-Fail Voltage
(Note 3)
V_IL
(Note 3)
V_PU
(Note 3)
DS1374-33
V_PF
DS1374-3
DS1374-18
Backup Supply Voltage
(Notes 3, 4, 5)
V_BACKUP
DS1374-33
DS1374-3, DS1374-18
MIN TYP MAX
2.97 3.3 5.50
2.7
3.0
3.3
1.71 1.8 1.89
0.7 x V_CC
V_CC + 0.3
-0.3
+0.3 x
V_CC
UNITS
V
V
V
5.5
V
2.70 2.88 2.97
2.45 2.6
2.7
V
1.51 1.6 1.71
1.3
3.0
V_CC
(_MAX)
V
1.3
3.0
3.7
2 _____________________________________________________________________