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參數(shù)資料
| 型號： | LM81 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface ACPI-Compatible Microprocessor System |
| 中文描述： | 串行接口ACPI的兼容微處理器系統(tǒng) |
| 文件頁數(shù)： | 6/32頁 |
| 文件大?。?/td> | 412K |
| 代理商： | LM81 |
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DC Electrical Characteristics
(Continued)
The following specifications apply for +2.8V
DC
≤
V
+
≤
+3.8V
, R
= 500
, unless otherwise specified.
Boldface limits apply
for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= 25C. (Note 8)
Symbol
Parameter
Conditions
Typical
(Note 9)
Limits
(Note 10)
Units
(Limits)
DIGITAL OUTPUTS (NTEST_OUT)
V
OUT(1)
Logical “1” Output Voltage
I
+
=
±
3.0 mA at
V
= +2.8V
I
OUT
=
±
3.0 mA at
V
+
= +3.8V
2.4
V (min)
V
OUT(0)
Logical “0” Output Voltage
0.4
V (max)
OPEN- DRAIN DIGITAL OUTPUTS (SMBData, RESET, CI, INT, T_CRIT_A)
V
OUT(0)
Logical “0” Output Voltage
I
OH
High Level Output Current
RESET and Chassis Intrusion
Pulse Width
DIGITAL INPUTS: VID0–VID4, NTEST_IN, A0/NTEST_OUT, A1, Chassis Intrusion (CI)
V
IN(1)
Logical “1” Input Voltage
V
IN(0)
Logical “0” Input Voltage
SMBus DIGITAL INPUTS (SMBCLK, SMBData)
V
IN(1)
Logical “1” Input Voltage
V
IN(0)
Logical “0” Input Voltage
Tach Pulse Logic Inputs (FAN1, FAN2)
V
IN(1)
Logical “1” Input Voltage
V
IN(0)
Logical “0” Input Voltage
ALL DIGITAL INPUTS
I
IN(1)
Logical “1” Input Current
I
IN(0)
Logical “0” Input Current
C
IN
Digital Input Capacitance
I
OUT
= 3.0 mA
V
OUT
= V
+
0.4
100
20
V (min)
μA (max)
ms (min)
0.1
45
2.0
0.8
V (min)
V (max)
1.4
0.6
V (min)
V (max)
0.7 x V
+
0.3 x V
+
V (min)
V (max)
V
IN
= V
+
V
IN
= 0 V
DC
0.005
0.005
20
1
1
μA (min)
μA (max)
pF
www.national.com
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