DS1643 Datasheet, PDF (7/17 Pages) Dallas Semiconductor – Nonvolatile Timekeeping RAM

DS1643/DS1643P
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +7.0V
Operating Temperature Range………………………………………………0°C to +70°C, Noncondensing
Storage Temperature Range………………………………………………-40°C to +85°C, Noncondensing
Soldering Temperature………………………………See IPC/JEDEC J-STD-020A Specification (Note 7)
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.
RECOMMENDED DC OPERATING CONDITIONS
(T_A = 0C to +70C)
PARAMETER
SYMBOL MIN TYP
Supply Voltage
V_CC
4.5 5.0
Logic 1 Voltage All Inputs
V_IH
2.2
Logic 0 Voltage All Inputs
V_IL
-0.3
MAX
5.5
V_CC + 0.3
+0.8
UNITS
V
V
V
NOTES
DC ELECTRICAL CHARACTERISTICS
(V_CC = 5.0V 10%, T_A = 0C to70C.)
PARAMETER
SYMBOL
Active Supply Current
I_CC
TTL Standby Current
( CE = V_IH, CE2 = V_IL)
I_CC1
CMOS Standby Current
( CE = V_CC - 0.2V_, CE2 = GND + 0.2V)
I_CC2
Input Leakage Current (Any Input)
I_IL
Output Leakage Current (Any Output)
I_OL
Output Logic 1 Voltage
(I_OUT = -1.0mA)
V_OH
Output Logic 0 Voltage
(I_OUT = +2.1mA)
V_OL
Write Protection Voltage
V_PF
MIN
-1
-1
2.4
4.25
TYP
15
1
1
4.37
MAX
50
3
3
+1
+1
0.4
4.50
UNITS NOTES
mA
2, 3
mA
2, 3
mA
2, 3
A
A
1
1
V
1
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