DS1646 Datasheet, PDF (6/11 Pages) Dallas Semiconductor – Nonvolatile Timekeeping RAM

ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Storage Temperature
Soldering Temperature
DS1646/DS1646P
-0.3V to +7.0V
-40°C to +85°C
260°C for 10 seconds (DIP Package) (See Note 7)
See IPC/JEDEC Standard J-STD-020A for
Surface Mount Devices
* 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
5V ± 10%
RECOMMENDED DC OPERATING CONDITIONS (Over the Operating Range)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage
Logic 1 Voltage All Inputs
Logic 0 Voltage All Inputs
V_CC
4.5 5.0
5.5
V
1
V_IH
2.2
V_CC+0.3 V
V_IL
-0.3
0.8
V
DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Average V_CC Power Supply Current
I_CC1
TTL Standby Current ( CE =V_IH)
I_CC2
CMOS Standby Current
I_CC3
( CE =V_CC-0.2V)
Input Leakage Current (any input)
I_IL
Output Leakage Current
I_OL
Output Logic 1 Voltage
V_OH
(I_OUT = -1.0 mA)
Output Logic 0 Voltage
V_OL
(I_OUT = +2.1 mA)
Write Protection Voltage
V_PF
MIN
-1
-1
2.4
4.0
(Over the Operating Range)
TYP
3
MAX
85
6
UNITS NOTES
mA
2, 3
mA
2, 3
2
4.0
mA
2, 3
+1
µA
+1
µA
V
0.4
V
4.25 4.5
V
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