Datasheet

AC ELECTRICAL CHARACTERISTICS (C
L
=50pF,Inputt
r
=t
f
=6ns)
Symbol Parameter
Test Conditions Value
Unit
V
CC
(V)
T
A
=25
o
C
54HC and 74HC
-40 to 85
o
C
74HC
-55 to 125
o
C
54HC
Min. Typ. Max. Min. Max. Min. Max.
t
TLH
t
THL
Output Transition
Time
2.0 30 75 95 110
ns
4.5 8151922
6.0 7131619
t
PLH
t
PHL
Propagation
Delay Time
2.0 60 125 190 225
ns
4.5 18 30 38 45
6.0 15 26 32 38
C
IN
Input Capacitance 5 10 10 10 pF
C
PD
(*) Power Dissipation
Capacitance
24
pF
(*) C
PD
isdefined 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 followingequation. I
CC
(opr) = C
PD
•V
CC
•f
IN
+I
CC
TEST CIRCUIT I
CC
(Opr.)SWITCHING CHARACTERISTICS TEST
CIRCUIT
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHINGCHARACTERISTICSTEST.
M54/M74HC147
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