DS1644P Datasheet, PDF (7/13 Pages) Dallas Semiconductor – Nonvolatile Timekeeping RAM

DS1644/DS1644P
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +7.0V
Storage Temperature……………………………………………………...-40°C to +85°C, Noncondensing
Soldering Temperature……………………………..…+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
TEMPERATURE
Commercial
0°C to +70°C, Noncondensing
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
V_IH
2.2
V_IL
-0.3
5.5
V
1
V_CC+0.3 V
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 ( CE =V_CC-
I_CC3
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)
Power-Fail Voltage
V_PF
MIN
-1
-1
2.4
4.0
(Over the Operating Range)
TYP
MAX
75
6
UNITS NOTES
mA
3
mA
3
4.0
mA
3
+1
mA
+1
mA
V
0.4
V
4.5
V
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