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Número de pieza
componentes Descripción
Lista de partido
MC74VHC540-D
Octal Bus Buffer Inverting
ON Semiconductor
MC74VHC540-D Datasheet PDF : 8 Pages
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A
50%
t
PHL
Y
50% V
CC
Figure 1.
MC74VHC540
SWITCHING WAVEFORMS
V
CC
OE1 or OE2
GND
t
PLH
Y
Y
50%
t
PZL
t
PLZ
50% V
CC
t
PZH
t
PHZ
50% V
CC
Figure 2.
V
CC
50%
GND
HIGH
IMPEDANCE
V
OL
+0.3V
V
OH
-0.3V
HIGH
IMPEDANCE
DEVICE
UNDER
TEST
TEST
POINT
OUTPUT
C
L
*
TEST CIRCUITS
DEVICE
UNDER
TEST
TEST
POINT
OUTPUT
1k
Ω
C
L
*
CONNECT TO V
CC
WHEN
TESTING t
PLZ
AND t
PZL
.
CONNECT TO GND WHEN
TESTING t
PHZ
AND t
PZH
.
*Includes all probe and jig capacitance
Figure 3.
*Includes all probe and jig capacitance
Figure 4.
INPUT EQUIVALENT CIRCUIT
INPUT
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