
DS1374
I2C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
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3
DC ELECTRICAL CHARACTERISTICS
(VCC = VCC(MIN) to VCC(MAX) , TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R1
(Note 6)
250
R2
(Note 7)
2000
Trickle-Charge Current-Limiting
Resistors
R3
(Note 8)
4000
Input Leakage
ILI
(Note 9)
-1
+1
I/O Leakage
ILO
(Note 10)
-1
+1
RST Pin I/O Leakage
ILORST
(Note 11)
-200
+1
μA
SDA Logic 0 Output (VOL = 0.4V)
IOLSDA
3.0
mA
VCC > 2V; VOL = 0.4V
3.0
1.71V < VCC < 2V; VOL = 0.2 VCC
3.0
mA
RST, SQW, and INT Logic 0
Outputs (Note 12)
IOL1
1.3V < VCC < 1.71V; VOL = 0.2 VCC
250
μA
DS1374-18
75
150
DS1374-3
110
200
Active Supply Current
(Notes 12, 13)
ICCA
DS1374-33
180
300
μA
DS1374-18
60
100
DS1374-3
80
125
Standby Current (Notes 12, 14)
ICCS
DS1374-33
115
175
μA
VBACKUP Leakage Current
(VBACKUP = 3.7V)
IBACKUPLKG
100
nA
DC ELECTRICAL CHARACTERISTICS
(VCC = 0V, VBACKUP = 3.7V, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MAX
TYP
MAX
UNITS
VBACKUP Current (OSC ON);
SQW OFF
IBKOSC1
(Note 15)
400
700
nA
VBACKUP Current (OSC ON);
SQW ON (32kHz)
IBKOSC2
(Notes 15, 16)
600
1000
nA
VBACKUP Data-Retention Current
(OSC OFF)
IBACKUPDR
25
100
nA