M74HCT157M1R 查看數據表（PDF） - STMicroelectronics
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M74HCT157M1R Datasheet PDF : 9 Pages
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M74HCT157
DC SPECIFICATIONS
Test Condition
Symbol
Parameter
VCC
(V)
VIH High Level Input
4.5
Voltage
to
5.5
VIL Low Level Input
4.5
Voltage
to
5.5
VOH High Level Output
Voltage
4.5
VOL Low Level Output
Voltage
4.5
II
Input Leakage
Current
5.5
ICC
Quiescent Supply
Current
5.5
∆ ICC Additional Worst
5.5
Case Supply
Current
* : Applicable only to DIR, G, G input
IO=-20 µA
IO=-4.0 mA
IO=20 µA
IO=4.0 mA
VI = VCC or GND
VI = VCC or GND
Per Input pin
VI = 0.5V or
VI = 2.4V
Other Inputs at
VCC or GND
IO = 0
Value
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
2.0
2.0
2.0
V
0.8
0.8
0.8 V
4.4 4.5
4.4
4.4
V
4.18 4.31
4.13
4.10
0.0 0.1
0.17 0.26
0.1
0.33
0.1
V
0.40
± 0.1
±1
± 1 µA
4
40
80 µA
2.0
2.9
3.0 mA
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
Test Condition
Value
Symbol
Parameter
VCC
(V)
tTLH tTHL Output Transition
Time
4.5
tPLH tPHL Propagation Delay
Time (A, B - Y)
4.5
tPLH tPHL Propagation Delay
Time (SELECT - Y)
4.5
tPLH tPHL Propagation Delay
Time (STROBE -Y)
4.5
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
8 15
19
22 ns
16 25
31
38 ns
19 30
38
45 ns
17 27
34
41 ns
4/9
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