DS1307 64 x 8, Serial, I
2
C Real-Time Clock
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……….……………………….…………....-0.5V to +7.0V
Operating Temperature Range (Noncondensing)
Commercial…………………….……………………………….………………………..0°C to +70°C
Industrial………………………………………………………………………………-40°C to +85°C
Storage Temperature Range………………………………………...…………..…………-55°C to +125°C
Soldering Temperature (DIP, leads)..…………………………………………….....+260°C for 10 seconds
Soldering Temperature (surface mount)…..…………………………See JPC/JEDEC Standard 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
(T
A
= 0°C to +70°C, T
A
= -40°C to +85°C.) (Notes 1, 2)
PARAMETER
Supply Voltage
Logic 1 Input
Logic 0 Input
V
BAT
Battery Voltage
SYMBOL
V
CC
V
IH
V
IL
V
BAT
CONDITIONS
MIN
4.5
2.2
-0.3
2.0
3
TYP
5.0
MAX
5.5
V
CC
+ 0.3
+0.8
3.5
UNITS
V
V
V
V
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 4.5V to 5.5V;
T
A
= 0°C to +70°C, T
A
= -40°C to +85°C.) (Notes 1, 2)
PARAMETER
Input Leakage (SCL)
I/O Leakage (SDA, SQW/OUT)
Logic 0 Output (I
OL
= 5mA)
Active Supply Current
(f
SCL
= 100kHz)
Standby Current
V
BAT
Leakage Current
Power-Fail Voltage (V
BAT
= 3.0V)
SYMBOL
I
LI
I
LO
V
OL
I
CCA
I
CCS
I
BATLKG
V
PF
1.216 x
V
BAT
(Note 3)
5
1.25 x
V
BAT
CONDITIONS
MIN
-1
-1
TYP
MAX
1
1
0.4
1.5
200
50
1.284 x
V
BAT
UNITS
µA
µA
V
mA
µA
nA
V
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 0V, V
BAT
= 3.0V;
T
A
= 0°C to +70°C, T
A
= -40°C to +85°C.) (Notes 1, 2)
PARAMETER
V
BAT
Current (OSC ON);
SQW/OUT OFF
V
BAT
Current (OSC ON);
SQW/OUT ON (32kHz)
V
BAT
Data-Retention Current
(Oscillator Off)
SYMBOL
I
BAT1
I
BAT2
I
BATDR
CONDITIONS
MIN
TYP
300
480
10
MAX
500
800
100
UNITS
nA
nA
nA
WARNING: Negative undershoots below -0.3V while the part is in battery-backed mode may cause loss of data.
2 of 15
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
