Data Sheet

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
4.5 8151923ns
t
PLH
t
PHL
Propagation
Delay Time
4.5 13 21 26 32 ns
C
IN
Input Capacitance 5 10 10 10 pF
C
PD
(*) Power Dissipation
Capacitance
39
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
/4 (per Gate)
SWITCHING CHARACTERISTICS TEST CIRCUIT
INPUT WAVEFORM IS THE SAVE ASTHAT IN CASE OF SWITCHING CHARACTERISTICS TEST.
TEST CIRCUIT I
CC
(Opr.)
M54/M74HCT32
4/9