DS1744P70 查看數據表（PDF） - Maxim Integrated
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DS1744P70 Datasheet PDF : 16 Pages
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DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground
5.5V Version…………………………..………………………………..…………………………...-0.3V to +6.0V
3.3V Version………………………………………………………………………………………...-0.3V to +4.6V
Storage Temperature Range
EDIP..........................……………………..………………………………………………………...-40°C to +85°C
PowerCap..................……………………..……………………………………………………….-55°C to +125°C
Lead Temperature (soldering, 10s)……….................................................................………………………………..+260°C
Note: EDIP is hand or wave-soldered only.
Soldering Temperature (reflow, PowerCap).................................................................................................................+260°C
This is a stress rating only and functional operation of the device at these or any other condition beyond those indicated in the operation sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect reliability.
OPERATING RANGE
RANGE
Commercial
Industrial
TEMP RANGE
0°C to +70°C, Noncondensing
-40°C to +85°C, Noncondesnsing
VCC
3.3V ±10% or 5V±10%
3.3V ±10% or 5V±10%
RECOMMENDED DC OPERATING CONDITIONS
(TA = Over the operating range)
PARAMETER
SYMBOL
MIN TYP
Logic 1 Voltage (All Inputs)
VCC = 5V ±10%
VCC = 3.3V ±10%
Logic 0 Voltage (All Inputs)
VCC = 5V ±10%
VCC = 3.3V ±10%
VIH
2.2
VIH
2.0
VIL
-0.3
VIL
-0.3
MAX
VCC + 0.3V
VCC + 0.3V
0.8
0.6
UNITS
V
V
V
V
NOTES
1
1
1
1
DC ELECTRICAL CHARACTERISTICS
(VCC = 5.0V ±10%, TA = Over the operating range.)
PARAMETER
SYMBOL MIN
TYP MAX UNITS NOTES
Active Supply Current
TTL Standby Current
( CE = VIH)
CMOS Standby Current
( CE ≥ VCC - 0.2V)
Input Leakage Current (Any
Input)
Output Leakage Current
(Any Output)
Output Logic 1 Voltage
(IOUT = -1.0mA)
Output Logic 0 Voltage
(IOUT = +2.1mA)
Write Protection Voltage
Battery Switchover Voltage
ICC
75
mA 2, 3, 10
ICC1
6
mA
2, 3
Icc2
4
mA
2, 3
IIL
-1
+1
µA
IOL
-1
+1
µA
VOH
2.4
1
VOL
0.4
1
VPF
4.25
4.50
V
1
VSO
VBAT
1, 4
8 of 16
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