DS1643/DS1643P
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
-0.3V to +7.0V
0°C to 70°C
Storage Temperature
-40°C to +85°C
Soldering Temperature
J-STD-020A Specification (See 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
(0°C to 70°C)
PARAMETER
SYMBOL MIN
TYP
MAX
VCC+0.3
0.8
UNITS NOTES
Logic 1 Voltage All Inputs
Logic 0 Voltage All Inputs
VIH
VIL
2.2
-0.3
V
V
DC ELECTRICAL CHARACTERISTICS
(0°C to=70°C; VCC = 5.0V ±=10%)
PARAMETER
SYMBOL MIN
TYP
15
MAX
50
UNITS NOTES
Active Supply Current
TTL Standby Current
ICC
ICC1
mA
mA
2, 3
2, 3
1
3
(CE =VIH, CE2=VIL)
CMOS Standby Current
ICC2
1
3
mA
2, 3
(CE =VCC-0.2V,
CE2=GND+0.2V)
Input Leakage Current (any input)
Output Leakage Current (any output)
Output Logic 1 Voltage
(IOUT = -1.0 mA)
Output Logic 0 Voltage
(IOUT = +2.1 mA)
IIL
IOL
VOH
-1
-1
2.4
+1
+1
µA
µA
1
1
1
VOL
VPF
0.4
Write Protection Voltage
4.25
4.37
4.50
V
6 of 14
DALLAS [ DALLAS SEMICONDUCTOR ]
