Rainbow Electronics DS1338 - Manual (Page 2)

DS1338 I 2 C RTC with 56-Byte NV RAM
2 of 15
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground………………………………………………………..……..-0.3V to +6.0V
Operating Temperature Range…………………………………………………………………………..……-40°C to +85°C
Storage Temperature Range………………………………………………………………………………...-55°C to +125°C
Soldering Temperature ……………..... See precautions in the Handling, PC Board Layout, and Assembly Section
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
(V
CC
= V
CC(MIN)
to V
CC(MAX)
, T
A
= -40°C to +85°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DS1338-18 1.71 1.8 1.89
DS1338-3 2.7 3.0 3.3 Supply Voltage V
CC
DS1338-33 3.0 3.3 3.63
V
Logic 1 V
IH
(Note 2) 0.7 x V
CC
V
CC
+ 0.3 V
Logic 0 V
IL
(Note 2) -0.3 +0.3 x V
CC
V
DS1338-18 1.51 1.62 1.71
DS1338-3 2.45 2.59 2.70 Power-Fail Voltage V
PF
DS1338-33 2.70 2.82 2.97
V
V
BAT
Battery Voltage V
BAT
(Note 2) 1.3 3.0 3.7 V
DC ELECTRICAL CHARACTERISTICS
(V
CC
= V
CC(MIN)
to V
CC(MAX)
, T
A
= -40°C to +85°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
BAT
Battery Voltage V
BAT
(Note 2) 1.3 3.7 V
Input Leakage I
LI
(Note 3) 1 mA
I/O Leakage I
LO
(Note 4) 1 mA
V
CC
> 2V; V
OL
= 0.4V 3.0
SDA Logic 0 Output I
OLSDA V
CC
< 2V; V
OL
= 0.2 V
CC
3.0
mA
V
CC
> 2V; V
OL
= 0.4V 3.0
1.71V < V
CC
< 2V;
V
OL
= 0.2 V
CC
3.0
mA
SQW/OUT Logic 0 Output I
OLSQW
1.3V < V
CC
< 1.71V;
V
OL
= 0.2 V
CC
250 mA
DS1338-18 75 150
DS1338-3 110 200 Active Supply Current (Note 5) I
CCA
DS1338-33 120 200
mA
DS1338-18 60 100
DS1338-3 80 125 Standby Current (Note 6) I
CCS
DS1338-33 85 125
mA
V
BAT
Leakage Current
(V
CC
Active)
I
BATLKG
25 100 nA