M74HC154 查看數據表（PDF） - STMicroelectronics
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M74HC154 Datasheet PDF : 8 Pages
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M74HC154
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC
(V)
Value
TA = 25 oC
-40 to 85 oC
Min. Typ. Max. Min. Max.
Unit
tTLH Output Transition Time
2.0
tTHL
4.5
30 75
8
15
95
19
ns
6.0
7
13
16
tPLH Propagation Delay Time
2.0
tPHL (A, B, C, D - Y)
4.5
65 175
19 35
220
44
ns
6.0
16 30
37
tPLH Propagation Delay Time
2.0
tPHL (G1, G2 - Y)
4.5
55 160
17 32
200
40
ns
6.0
15 27
34
CIN Input Capacitance
5
10
10 pF
CPD (*) Power Dissipation Capacitance
57
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC
SWITCHING CHARACTERISTICS TEST
CIRCUIT
TEST CIRCUIT ICC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHING CHARACTERISTICSTEST.
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