DS1642 Datasheet, PDF (6/13 Pages) Dallas Semiconductor – Nonvolatile Timekeeping RAM

DS1642
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +6.0V
Operating Temperature Range……………………………………………...0°C to +70°C (noncondensing)
Storage Temperature Range…………………………………………… -40°C to +85°C (noncondensing)
Lead Temperature (soldering, 10 seconds)
Note: Hand or wave-soldered only (Note 6) …………. . . . . . . . . . ………..………. . . . . . . …..+260C
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
PARAMETER
SYMBOL MIN TYP
Logic 1 Voltage
(All Inputs)
V_IH
2.2
Logic 0 Voltage
(All Inputs)
V_IL
-0.3
MAX
V_CC + 0.3
0.8
UNITS
V
V
NOTES
1
1
DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Active Supply Current
TTL Standby Current
( CE = V_IH)
CMOS Standby Current
( CE < V_CC - 0.2V)
Input Leakage Current
(Any Input)
I_CC
I_CC1
I_CC2
I_IL
-1
I/O Leakage Current
(Any Output)
I_OL
-1
Output Logic 1 Voltage
(I_OUT = -1.0mA)
V_OH
2.4
Output Logic 0 Voltage
(I_OUT = +2.1mA)
V_OL
Write Protection Voltage
V_PF
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
6 of 13