HC257 查看數據表（PDF） - STMicroelectronics
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HC257 Datasheet PDF : 14 Pages
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74VHC257
Table 6: DC Specifications
Symbol
Parameter
VIH High Level Input
Voltage
VIL Low Level Input
Voltage
VOH High Level Output
Voltage
VOL Low Level Output
Voltage
IOZ High Impedance
Output Leakage
Current
II
Input Leakage
Current
ICC Quiescent Supply
Current
Test Condition
Value
VCC
(V)
2.0
3.0 to
5.5
2.0
3.0 to
5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
5.5
0 to
5.5
IO=-50 µA
IO=-50 µA
IO=-50 µA
IO=-4 mA
IO=-8 mA
IO=50 µA
IO=50 µA
IO=50 µA
IO=4 mA
IO=8 mA
VI = VIH or VIL
VO = VCC or GND
VI = 5.5V or GND
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
1.5
0.7VCC
1.5
1.5
0.7VCC
0.7VCC
V
0.5
0.3VCC
0.5
0.3VCC
0.5
0.3VCC V
1.9 2.0
1.9
1.9
2.9 3.0
2.9
2.9
4.4 4.5
4.4
4.4
V
2.58
2.48
2.4
3.94
3.8
3.7
0.0 0.1
0.1
0.1
0.0 0.1
0.1
0.1
0.0 0.1
0.1
0.1 V
0.36
0.44
0.55
0.36
0.44
0.55
±0.25
± 2.5
± 2.5 µA
± 0.1
±1
± 1 µA
5.5 VI = VCC or GND
4
40
40 µA
4/14
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