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參數(shù)資料
| 型號(hào)： | DS1644L-120 |
| 英文描述： | Nonvolatile Timekeeping RAM |
| 中文描述： | 非易失性內(nèi)存時(shí)鐘 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大小： | 108K |
| 代理商： | DS1644L-120 |
DS1644LPM
041697 6/11
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
–0.3V to +7.0V
0
°
C to 70
°
C
–20
°
C to +70
°
C
260
°
C for 10 seconds (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)
NOTES
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Supply Voltage
V
CC
4.5
5.0
5.5
V
1
Logic 1 Voltage All Inputs
V
IH
2.2
V
CC
+0.3
V
Logic 0 Voltage All Inputs
V
IL
–0.3
0.8
V
DC ELECTRICAL CHARACTERISTICS
(0
°
C
≤
t
A
≤
70
°
C; V
CC
=5.0V
±
10%)
MAX
UNITS
PARAMETER
SYMBOL
MIN
TYP
NOTES
Average V
CC
Power Supply Cur-
rent
I
CC1
75
mA
3
TTL Standby Current (CE = V
IH
)
I
CC2
6
mA
3
CMOS Standby Current
(CE=V
CC
–0.2V)
I
CC3
4.0
mA
3
Input Leakage Current (any input)
I
IL
–1
+1
μ
A
Output Leakage Current
I
OL
–1
+1
μ
A
Output Logic 1 Voltage
(I
OUT
= –1.0 mA)
V
OH
2.4
V
Output Logic 0 Voltage
(I
OUT
= +2.1 mA)
V
OL
0.4
V
Write Protection Voltage
V
PF
4.0
4.25
4.5
V
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