DS1302 Trickle-Charge Timekeeping Chip
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………………………….-0.5Vto +7.0V
Operating Temperature Range, Commercial………………………………………………………………….0°C to +70°C
Operating Temperature Range, Industrial (IND)……………………………………………………………-40°C to +85°C
Storage Temperature Range……………………………………………………………………………..….-55°C to +125°C
Soldering Temperature (leads, 10 seconds)………………………………………………………………..………….260°C
Soldering Temperature (surface mount)………………………………………………..…….See IPC/JEDEC J-STD-020
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 the absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED DC OPERATING CONDITIONS
(TA = 0°C to +70°C or TA = -40°C to +85°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VCC1,
VCC2
Supply Voltage VCC1, VCC2
(Notes 2, 10)
2.0
3.3
5.5
V
VCC
0.3
+
Logic 1 Input
Logic 0 Input
VIH
(Note 2)
(Note 2)
2.0
V
V
VCC = 2.0V
VCC = 5V
-0.3
-0.3
+0.3
+0.8
VIL
DC ELECTRICAL CHARACTERISTICS
(TA = 0°C to +70°C or TA = -40°C to +85°C.) (Note 1)
PARAMETER
Input Leakage
SYMBOL
CONDITIONS
(Notes 5, 13)
(Notes 5, 13)
MIN
TYP
85
MAX
500
UNITS
μA
ILI
I/O Leakage
ILO
85
500
μA
Logic 1 Output (IOH = -0.4mA)
Logic 1 Output (IOH = -1.0mA)
Logic 0 Output (IOL = 1.5mA)
Logic 0 Output (IOL = 4.0mA)
VCC = 2.0V
1.6
2.4
VOH
VOL
(Note 2)
(Note 2)
V
V
VCC = 5V
VCC = 2.0V
VCC = 5V
0.4
0.4
VCC1 = 2.0V
VCC1 = 5V
VCC1 = 2.0V
0.4
Active Supply Current
(Oscillator Enabled)
CH = 0
(Notes 4, 11)
ICC1A
ICC1T
mA
μA
1.2
0.2
0.45
1
0.3
Timekeeping Current
(Oscillator Enabled)
CH = 0
(Notes 3, 11,13)
VCC1 = 5V
1
VCC1 = 2.0V
VCC1 = 5V
IND
100
100
200
0.425
1.28
25.3
81
Standby Current (Oscillator
Disabled)
CH = 1
(Notes 9, 11, 13)
ICC1S
nA
1
5
VCC2 = 2.0V
VCC2 = 5V
VCC2 = 2.0V
VCC2 = 5V
Active Supply Current
(Oscillator Enabled)
CH = 0
(Notes 4, 12)
ICC2A
ICC2T
mA
Timekeeping Current
(Oscillator Enabled)
CH = 0
(Notes 3, 12)
μA
CH = 1
(Notes 9, 12)
VCC2 = 2.0V
25
80
Standby Current (Oscillator
Disabled)
ICC2S
μA
VCC2 = 5V
R1
R2
R3
2
4
8
Trickle-Charge Resistors
kΩ
Trickle-Charge Diode Voltage
Drop
VTD
0.7
V
10 of 13
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
