Datasheet

DS1337 I
2
C Serial Real-Time Clock
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground…………………………………………………………...…-0.3V to +6.0V
Operating Temperature Range (Noncondensing)………………………………………………………….-40°C to +85°C
Storage Temperature Range………………………………………………………………………………..-55°C to +125°C
Soldering Temperature…………………………………………………………See IPC/JEDEC J-STD-020 Specification
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
= -40°C to +85°C)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
CC
Full operation 1.8 3.3 5.5 V
V
CC
Supply Voltage
V
CCT
Timekeeping (Note
5)
1.3 1.8 V
SCL, SDA 0.7 x V
CC
V
CC
+ 0.3
Logic 1 V
IH
INTA, SQW/INTB
5.5
V
Logic 0 V
IL
-0.3 +0.3 x V
CC
V
DC ELECTRICAL CHARACTERISTICS—Full Operation
(V
CC
= 1.8V to 5.5V, T
A
= -40°C to +85°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Leakage I
LI
(Note 2) -1 +1
A
I/O Leakage I
LO
(Note 3) -1 +1
A
Logic 0 Output (V
OL
= 0.4V) I
OL
(Note 3) 3 mA
Active Supply Current I
CCA
(Note 4) 150
A
Standby Current I
CCS
(Notes 5, 6) 1.5
A
DC ELECTRICAL CHARACTERISTICS--Timekeeping
(V
CC
= 1.3V to 1.8V, T
A
= -40°C to +85°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Timekeeping Current
(Oscillator Enabled)
I
CCTOSC
(Notes 5, 7, 8, 9) 425 600 nA
Data-Retention Current
(Oscillator Disabled)
I
CCTDDR
(Notes 5, 9) 100 nA