Datasheet

DS1743/DS1743P Y2K-Compliant, Nonvolatile Timekeeping RAMs
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ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………………-0.3V to +6.0V
Storage Temperature Range……………………………………………………………………….-40°C to +85°C
Soldering Temperature (EDIP) (leads, 10 seconds)…………………….……………………………..…+260°C
Soldering Temperature…………………………………………..….See J-STD-020 Specification (See Note 8)
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections
of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect device reliability.
OPERATING RANGE
RANGE
TEMP RANGE
V
CC
Commercial
0°C to +70°C
3.3V ±10% or 5V ±10%
Industrial
-40°C to +85°C
3.3V ±10% or 5V ±10%
RECOMMENDED DC OPERATING CONDITIONS
(T
A
= Over the Operating Range.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
Logic 1 Voltage All Inputs V
IH
V
CC
= 5V ±10%
2.2
V
CC
+0.3V
V 1
V
CC
= 3.3V
±10%
2.0
V
CC
+0.3V
V 1
Logic 0 Voltage All Inputs V
IL
V
CC
= 5V ±10%
-0.3 +0.8 V 1
V
CC
= 3.3V
±10%
-0.3 +0.6 V 1
DC ELECTRICAL CHARACTERISTICS (5V)
( V
CC
= 5.0V ±10%, T
A
= Over the Operating Range.)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Active Supply Current I
CC
15 50 mA 2, 3
TTL Standby Current
(CE = V
IH
, CE2 = V
IL
)
I
CC1
1 3 mA 2, 3
CMOS Standby Current
(CE ≥ V
CC
- 0.2V; CE2 = GND + 0.2V)
I
CC2
1 3 mA 2, 3
Input Leakage Current (Any Input) I
IL
-1 +1
µA
Output Leakage Current (Any Output) I
OL
-1 +1
µA
Output Logic 1 Voltage
(I
OUT
= -1.0mA)
V
OH
2.4 1
Output Logic 0 Voltage
(I
OUT
= 2.1mA)
V
OL1
0.4 1
Write-Protection Voltage V
PF
4.20 4.50 V 1
Battery Switchover Voltage V
SO
V
BAT
1, 4