Ds1374 i – Rainbow Electronics DS1374 User Manual
Page 2
DS1374
I
2
C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
2
_____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED DC OPERATING CONDITIONS
(V
CC
= V
CC MIN
to V
CC MAX
, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
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.
Voltage Range on V
CC
Pin Relative to Ground .....-0.3V to +6.0V
Voltage Range on SDA, SCL, and WDS
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 Range ........................See the Handling,
PC Board Layout, and Assembly section.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DS1374-33
2.97
3.3
5.50
DS1374-3
2.7
3.0
3.3
Supply Voltage
(Notes 2, 3)
V
CC
DS1374-18
1.71
1.8
1.89
V
Input Logic 1
V
IH
(Note 2)
0.7 x V
CC
V
CC
+ 0.3
V
Input Logic 0
V
IL
(Note 2)
-0.3
+0.3 x
V
CC
V
Pullup Resistor Voltage (
INT,
SQW, SDA, SCL), V
CC
= 0V
V
PU
(Note 2)
5.5
V
DS1374-33
2.70
2.88
2.97
DS1374-3
2.45
2.6
2.7
Power-Fail Voltage
(Note 2)
V
PF
DS1374-18
1.51
1.6
1.71
V
DS1374-33
1.3
3.0
V
CC
MAX
DS1374-3
1.3
3.0
3.7
Backup Supply Voltage
(Notes 2, 3, 4)
V
BACKUP
V