DS1743 Datasheet, PDF (6/17 Pages) Dallas Semiconductor – Y2KC Nonvolatile Timekeeping RAM

ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
DS1743/DS1743P
-0.3V to +6.0V
0°C to 70°C
-40°C to +85°C
See J-STD-020A 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 reliability.
OPERATING RANGE
Range
Commercial
Temperature
0°C to +70°C
V_CC
3.3V ± 10% or 5V ± 10%
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
Logic 1 Voltage All Inputs
V_CC = 5V ±10%
V_CC = 3.3V ±10%
Logic 0 Voltage All Inputs
V_CC = 5V ±10%
V_CC = 3.3V ±10%
SYMBOL MIN
V_IH
2.2
V_IH
2.0
V_IL
-0.3
V_IL
-0.3
TYP
(Over the Operating Range)
MAX UNITS NOTES
V_CC +0.3V V
1
V_CC +0.3V V
1
0.8
V
1
0.6
V
1
DC ELECTRICAL CHARACTERISTICS
(Over the Operating Range; V_CC = 5.0V ± 10%)
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)
CMOS Standby Current
( CE ≥=V_CC - 0.2V, CE2=
GND + 0.2V)
Input Leakage Current
(any input)
Output Leakage Current
(any output)
Output Logic 1 Voltage
(I_OUT = -1.0 mA)
Output Logic 0 Voltage
(I_OUT = 2.1 mA)
Write Protection Voltage
I_CC1
1
I_CC2
1
I_IL
I_OL
V_OH
V_OL1
V_PF
-1
-1
2.4
4.25
3
mA
2, 3
3
mA
2, 3
+1
µA
+1
µA
1
0.4
1
4.50
V
1
Battery Switch-over Voltage
V_SO
V_BAT
1, 4
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